ConfigurationElement.xml

<Type Name="ConfigurationElement" FullName="System.Configuration.ConfigurationElement">
  <TypeSignature Language="C#" Value="public abstract class ConfigurationElement" />
  <TypeSignature Language="ILAsm" Value=".class public auto ansi abstract beforefieldinit ConfigurationElement extends System.Object" />
  <TypeSignature Language="DocId" Value="T:System.Configuration.ConfigurationElement" />
  <TypeSignature Language="VB.NET" Value="Public MustInherit Class ConfigurationElement" />
  <TypeSignature Language="F#" Value="type ConfigurationElement = class" />
  <TypeSignature Language="C++ CLI" Value="public ref class ConfigurationElement abstract" />
  <AssemblyInfo>
    <AssemblyName>System.Configuration</AssemblyName>
    <AssemblyVersion>2.0.0.0</AssemblyVersion>
    <AssemblyVersion>4.0.0.0</AssemblyVersion>
  </AssemblyInfo>
  <AssemblyInfo>
    <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
    <AssemblyVersion>4.0.1.0</AssemblyVersion>
    <AssemblyVersion>4.0.2.0</AssemblyVersion>
    <AssemblyVersion>4.0.3.0</AssemblyVersion>
    <AssemblyVersion>5.0.0.0</AssemblyVersion>
    <AssemblyVersion>6.0.0.0</AssemblyVersion>
    <AssemblyVersion>7.0.0.0</AssemblyVersion>
    <AssemblyVersion>8.0.0.0</AssemblyVersion>
    <AssemblyVersion>9.0.0.0</AssemblyVersion>
    <AssemblyVersion>10.0.0.0</AssemblyVersion>
    <AssemblyVersion>11.0.0.0</AssemblyVersion>
  </AssemblyInfo>
  <TypeForwardingChain>
    <TypeForwarding From="System.Configuration.ConfigurationManager" FromVersion="11.0.0.0" To="System.Configuration" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2-pp;netframework-4.7.1-pp;netframework-4.7.2-pp;netframework-4.7-pp;netframework-4.8.1-pp;netframework-4.8-pp" />
  </TypeForwardingChain>
  <Base>
    <BaseTypeName>System.Object</BaseTypeName>
  </Base>
  <Interfaces />
  <Docs>
    <summary>Represents a configuration element within a configuration file.</summary>
    <remarks>
      <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement> is an abstract class that is used to represent an XML element in a configuration file (such as Web.config). An element in a configuration file can contain zero, one, or more child elements.

 Because the <xref:System.Configuration.ConfigurationElement> class is defined as abstract, you cannot create an instance of it. You can only derive classes from it. The .NET Framework includes classes that derive from the <xref:System.Configuration.ConfigurationElement> class in order to represent standard XML configuration elements, such as <xref:System.Configuration.ConfigurationSection>. You can also extend the <xref:System.Configuration.ConfigurationElement> class to access custom configuration elements and sections. The example included later in this topic shows how to access custom configuration elements and sections by using custom classes that derive from <xref:System.Configuration.ConfigurationElement>.

 You can also extend the standard configuration types such as <xref:System.Configuration.ConfigurationElement>, <xref:System.Configuration.ConfigurationElementCollection>, <xref:System.Configuration.ConfigurationProperty>, and <xref:System.Configuration.ConfigurationSection>. For more information, see the documentation for those classes.

 For more information about how to access information in configuration files, see the <xref:System.Configuration.ConfigurationManager> class and the <xref:System.Web.Configuration.WebConfigurationManager> class.



## Examples
 The following code example shows how to implement a custom <xref:System.Configuration.ConfigurationElement> both as an individual element in a custom section and as a collection of elements in a custom section. The example consists of the following files:

- An app.config file that contains a custom section that is named `MyUrls`. This section contains a simple element (it does not contain any other elements) and a collection of elements. The simple element is named `simple` and the collection is named `urls`.

- A console application. The application reads the contents of the app.config file and writes the information to the console. It uses classes that derive from <xref:System.Configuration.ConfigurationElement>, <xref:System.Configuration.ConfigurationElementCollection>, and <xref:System.Configuration.ConfigurationSection>.

- A class named `UrlsSection` that derives from the <xref:System.Configuration.ConfigurationSection> class. This class is used to access the `MyUrls` section in the configuration file.

- A class named `UrlsCollection` that derives from the <xref:System.Configuration.ConfigurationElementCollection> class. This class is used to access the `urls` collection in the configuration file.

- A class named `UrlConfigElement` that derives from the <xref:System.Configuration.ConfigurationElement> class. This class is used to access the `simple` element and the members of the `urls` collection in the configuration file.

 To run the example, perform the following steps:

1.  Create a solution that has a console application project and a class library project that is named `ConfigurationElement`.

2.  Put the three class files in the class library project and put the other files in the console library project.

3.  In both projects set a reference to `System.Configuration`.

4.  In the console application project set a project reference to the class library project.



 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet151":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet151":::

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/CustomSection.cs" id="Snippet71":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/CustomSection.vb" id="Snippet71":::

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/CustomElementCollection.cs" id="Snippet51":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/CustomElementCollection.vb" id="Snippet51":::

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/CustomElement.cs" id="Snippet31":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/CustomElement.vb" id="Snippet31":::

 ]]></format>
    </remarks>
    <block subset="none" type="overrides">
      <para>Every <see cref="T:System.Configuration.ConfigurationElement" /> object creates an internal <see cref="T:System.Configuration.ConfigurationPropertyCollection" /> collection of <see cref="T:System.Configuration.ConfigurationProperty" /> objects that represents either the element attributes or a collection of child elements.

 Non-customizable information and functionality is contained by an <see cref="T:System.Configuration.ElementInformation" /> object provided by the <see cref="P:System.Configuration.ConfigurationElement.ElementInformation" /> property.

 You can use either a programmatic or a declarative (attributed) coding model to create a custom configuration element:

- The programmatic model requires that for each element attribute, you create a property to get or set its value and add it to the internal property bag of the underlying <see cref="T:System.Configuration.ConfigurationElement" /> base class. For an example of how to use this model, see the <see cref="T:System.Configuration.ConfigurationSection" /> class.

- The simpler declarative model, also called the attributed model, allows you to define an element attribute by using a property and then decorate it with attributes. These attributes instruct the ASP.NET configuration system about the property types and their default values. With this information, obtained through reflection, the ASP.NET configuration system creates the element property objects for you and performs the required initialization. The example shown later in this topic shows how to use this model.</para>
    </block>
    <altmember cref="T:System.Configuration.ConfigurationManager" />
    <altmember cref="T:System.Configuration.ConfigurationSection" />
    <altmember cref="T:System.Configuration.ElementInformation" />
    <altmember cref="T:System.Configuration.ConfigurationElementCollection" />
    <altmember cref="T:System.Configuration.ConfigurationElementCollectionType" />
    <altmember cref="T:System.Configuration.ConfigurationProperty" />
    <altmember cref="T:System.Configuration.ConfigurationPropertyCollection" />
  </Docs>
  <Members>
    <Member MemberName=".ctor">
      <MemberSignature Language="C#" Value="protected ConfigurationElement ();" />
      <MemberSignature Language="ILAsm" Value=".method familyhidebysig specialname rtspecialname instance void .ctor() cil managed" />
      <MemberSignature Language="DocId" Value="M:System.Configuration.ConfigurationElement.#ctor" />
      <MemberSignature Language="VB.NET" Value="Protected Sub New ()" />
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      <MemberType>Constructor</MemberType>
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        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
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        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
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        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <Parameters />
      <Docs>
        <summary>Initializes a new instance of the <see cref="T:System.Configuration.ConfigurationElement" /> class.</summary>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 You create a new instance of the <xref:System.Configuration.ConfigurationElement> class, for example, every time your application needs to add a new element to the related <xref:System.Configuration.ConfigurationElementCollection> collection.



## Examples
 The following example shows how to use a customized constructor.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/CustomElement.cs" id="Snippet32":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/CustomElement.vb" id="Snippet32":::

 ]]></format>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="CurrentConfiguration">
      <MemberSignature Language="C#" Value="public System.Configuration.Configuration CurrentConfiguration { get; }" />
      <MemberSignature Language="ILAsm" Value=".property instance class System.Configuration.Configuration CurrentConfiguration" />
      <MemberSignature Language="DocId" Value="P:System.Configuration.ConfigurationElement.CurrentConfiguration" />
      <MemberSignature Language="VB.NET" Value="Public ReadOnly Property CurrentConfiguration As Configuration" />
      <MemberSignature Language="F#" Value="member this.CurrentConfiguration : System.Configuration.Configuration" Usage="System.Configuration.ConfigurationElement.CurrentConfiguration" />
      <MemberSignature Language="C++ CLI" Value="public:&#xA; property System::Configuration::Configuration ^ CurrentConfiguration { System::Configuration::Configuration ^ get(); };" />
      <MemberType>Property</MemberType>
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        <AssemblyName>System.Configuration</AssemblyName>
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        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
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        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Configuration.Configuration</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>Gets a reference to the top-level <see cref="T:System.Configuration.Configuration" /> instance that represents the configuration hierarchy that the current <see cref="T:System.Configuration.ConfigurationElement" /> instance belongs to.</summary>
        <value>The top-level <see cref="T:System.Configuration.Configuration" /> instance that the current <see cref="T:System.Configuration.ConfigurationElement" /> instance belongs to.</value>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.CurrentConfiguration> property makes it easy to determine which version of .NET is targeted. The <xref:System.Configuration.Configuration.TargetFramework> property of the top-level <xref:System.Configuration.Configuration> instance indicates the targeted framework version.

 ]]></format>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="DeserializeElement">
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        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
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        <ReturnType>System.Void</ReturnType>
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        <Parameter Name="reader" Type="System.Xml.XmlReader" />
        <Parameter Name="serializeCollectionKey" Type="System.Boolean" />
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        <param name="reader">The <see cref="T:System.Xml.XmlReader" /> that reads from the configuration file.</param>
        <param name="serializeCollectionKey">
          <see langword="true" /> to serialize only the collection key properties; otherwise, <see langword="false" />.</param>
        <summary>Reads XML from the configuration file.</summary>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Examples
 The following example demonstrates how to extend the <xref:System.Configuration.ConfigurationElement.DeserializeElement*> method.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/CustomElement.cs" id="Snippet33":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/CustomElement.vb" id="Snippet33":::

 ]]></format>
        </remarks>
        <exception cref="T:System.Configuration.ConfigurationErrorsException">The element to read is locked.

-or-

 An attribute of the current node is not recognized.

-or-

 The lock status of the current node cannot be determined.</exception>
      </Docs>
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        <summary>Gets an <see cref="T:System.Configuration.ElementInformation" /> object that contains the non-customizable information and functionality of the <see cref="T:System.Configuration.ConfigurationElement" /> object.</summary>
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        <remarks>
          <format type="text/markdown"><![CDATA[

## Examples
 The following example shows how to use the <xref:System.Configuration.ConfigurationElement.ElementInformation> property.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ElementInformation.cs" id="Snippet80":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ElementInformation.vb" id="Snippet80":::

 ]]></format>
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        <value>The <see cref="T:System.Configuration.ConfigurationElementProperty" /> that represents the <see cref="T:System.Configuration.ConfigurationElement" /> itself.</value>
        <remarks>To be added.</remarks>
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        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
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        <AssemblyVersion>9.0.0.0</AssemblyVersion>
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        <AssemblyVersion>11.0.0.0</AssemblyVersion>
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        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 A <xref:System.Configuration.ContextInformation> object provides the context necessary for a <xref:System.Configuration.ConfigurationElement> object to make decisions based upon where it is being evaluated.

 The <xref:System.Configuration.ContextInformation> object provides environment details related to an element of the configuration. For example, you can use the <xref:System.Configuration.ContextInformation.IsMachineLevel> property to determine whether a <xref:System.Configuration.ConfigurationElement> was set in Machine.config, or you can determine which hierarchy a <xref:System.Configuration.ConfigurationElement> element belongs to by using the <xref:System.Configuration.ContextInformation.HostingContext> property.

 ]]></format>
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        <AssemblyVersion>9.0.0.0</AssemblyVersion>
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          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.SerializeElement*> method and the <xref:System.Configuration.ConfigurationElement.SerializeToXmlElement*> method call this method in order to transform an assembly name when an earlier version of the .NET Framework is targeted.

 ]]></format>
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        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.SerializeElement*> method and the <xref:System.Configuration.ConfigurationElement.SerializeToXmlElement*> method call this method in order to transform a type name when an earlier version of the .NET Framework is targeted.

 ]]></format>
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        <summary>Used to initialize a default set of values for the <see cref="T:System.Configuration.ConfigurationElement" /> object.</summary>
        <remarks>
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## Remarks
 Called to set the internal state of the object to appropriate default values.

 ]]></format>
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## Remarks
 The <xref:System.Configuration.ConfigurationElement.IsModified*> method determines whether this <xref:System.Configuration.ConfigurationElement> object will be written to the configuration file when the <xref:System.Configuration.Configuration.Save*> method is called. If the return value is `false`, it is assumed that the configuration file represents the current state of the element.

 By default, <xref:System.Configuration.ConfigurationElement.IsModified*> returns `true` after a property is set through the indexer to this <xref:System.Configuration.ConfigurationElement> object.

 Override the <xref:System.Configuration.ConfigurationElement.IsModified*> method to provide custom indication of the state of this <xref:System.Configuration.ConfigurationElement> element.



## Examples
 The following example shows how to extend <xref:System.Configuration.ConfigurationElement.IsModified*>.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/CustomElement.cs" id="Snippet35":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/CustomElement.vb" id="Snippet35":::

 The method shown in the previous example is called when a configuration element is modified, as in the following example.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet6":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet6":::

 ]]></format>
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## Remarks
 The system defines configuration elements that cannot be modified.

 To determine which elements can be modified, use the <xref:System.Configuration.ConfigurationElement.IsReadOnly*> method.



## Examples
 The following example shows how to use the <xref:System.Configuration.ConfigurationElement.IsReadOnly*> method. It is used on a custom section and returns `false`.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet7":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet7":::

 ]]></format>
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          <format type="text/markdown"><![CDATA[

## Remarks
 Use this method to get or set the values of a <xref:System.Configuration.ConfigurationProperty> object.

 ]]></format>
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## Remarks
 Use the <xref:System.Configuration.ConfigurationElement.Item*> property to get or set the values of a <xref:System.Configuration.ConfigurationProperty> object.

 In C#, this property is the indexer for the <xref:System.Configuration.ConfigurationSectionCollection> class.

 ]]></format>
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## Remarks
 Use the <xref:System.Configuration.ConfigurationElement.Item*> property to get or set the values of a <xref:System.Configuration.ConfigurationProperty> object.

 In C#, this property is the indexer for the <xref:System.Configuration.ConfigurationSectionCollection> class.

 ]]></format>
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        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Configuration.ConfigurationLockCollection</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>Gets the collection of locked attributes.</summary>
        <value>The <see cref="T:System.Configuration.ConfigurationLockCollection" /> of locked attributes (properties) for the element.</value>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.LockAllAttributesExcept> property allows you to lock all the attributes at once, with the exception of the one you specify. To do that, you use the <xref:System.Configuration.ConfigurationLockCollection.Contains*> method, as explained in the Example section.

> [!NOTE]
>  The <xref:System.Configuration.ConfigurationElement.LockAllAttributesExcept> property allows you to prevent the child configuration elements of the element to which you apply the rule from being modified. Use the <xref:System.Configuration.ConfigurationElement.LockItem> property if you want to put a general lock on the parent element itself and its child elements.



## Examples
 The following example shows how to use the <xref:System.Configuration.ConfigurationElement.LockAllAttributesExcept*>.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet9":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet9":::

 ]]></format>
        </remarks>
        <block subset="none" type="overrides">
          <para>If you use the <see cref="P:System.Configuration.ConfigurationElement.LockAllAttributesExcept" /> and <see cref="P:System.Configuration.ConfigurationElement.LockAttributes" /> properties at the same time, the most restrictive rule applies.</para>
        </block>
        <altmember cref="T:System.Configuration.ConfigurationLockCollection" />
      </Docs>
    </Member>
    <Member MemberName="LockAllElementsExcept">
      <MemberSignature Language="C#" Value="public System.Configuration.ConfigurationLockCollection LockAllElementsExcept { get; }" />
      <MemberSignature Language="ILAsm" Value=".property instance class System.Configuration.ConfigurationLockCollection LockAllElementsExcept" />
      <MemberSignature Language="DocId" Value="P:System.Configuration.ConfigurationElement.LockAllElementsExcept" />
      <MemberSignature Language="VB.NET" Value="Public ReadOnly Property LockAllElementsExcept As ConfigurationLockCollection" />
      <MemberSignature Language="F#" Value="member this.LockAllElementsExcept : System.Configuration.ConfigurationLockCollection" Usage="System.Configuration.ConfigurationElement.LockAllElementsExcept" />
      <MemberSignature Language="C++ CLI" Value="public:&#xA; property System::Configuration::ConfigurationLockCollection ^ LockAllElementsExcept { System::Configuration::ConfigurationLockCollection ^ get(); };" />
      <MemberType>Property</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Configuration.ConfigurationLockCollection</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>Gets the collection of locked elements.</summary>
        <value>The <see cref="T:System.Configuration.ConfigurationLockCollection" /> of locked elements.</value>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.LockAllElementsExcept> property allows you to lock all the elements at once, except for the one you specify.

> [!NOTE]
>  The <xref:System.Configuration.ConfigurationElement.LockAllElementsExcept> property allows you to prevent the child configuration elements of the element to which you apply the rule from being modified. Use the <xref:System.Configuration.ConfigurationElement.LockItem> property if you want to put a general lock on the element itself and its child elements.



## Examples
 The following example shows how to use the <xref:System.Configuration.ConfigurationElement.LockAllElementsExcept> property.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet5":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet5":::

 ]]></format>
        </remarks>
        <altmember cref="T:System.Configuration.ConfigurationLockCollection" />
      </Docs>
    </Member>
    <Member MemberName="LockAttributes">
      <MemberSignature Language="C#" Value="public System.Configuration.ConfigurationLockCollection LockAttributes { get; }" />
      <MemberSignature Language="ILAsm" Value=".property instance class System.Configuration.ConfigurationLockCollection LockAttributes" />
      <MemberSignature Language="DocId" Value="P:System.Configuration.ConfigurationElement.LockAttributes" />
      <MemberSignature Language="VB.NET" Value="Public ReadOnly Property LockAttributes As ConfigurationLockCollection" />
      <MemberSignature Language="F#" Value="member this.LockAttributes : System.Configuration.ConfigurationLockCollection" Usage="System.Configuration.ConfigurationElement.LockAttributes" />
      <MemberSignature Language="C++ CLI" Value="public:&#xA; property System::Configuration::ConfigurationLockCollection ^ LockAttributes { System::Configuration::ConfigurationLockCollection ^ get(); };" />
      <MemberType>Property</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Configuration.ConfigurationLockCollection</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>Gets the collection of locked attributes.</summary>
        <value>The <see cref="T:System.Configuration.ConfigurationLockCollection" /> of locked attributes (properties) for the element.</value>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.LockAttributes> property allows you to lock all the attributes you specify.

 To do that you use the <xref:System.Configuration.ConfigurationLockCollection.Contains*> method, as explained in the Example section.

> [!NOTE]
>  The <xref:System.Configuration.ConfigurationElement.LockAttributes> property allows you to prevent the child configuration elements of the element to which you apply the rule from being modified. Use <xref:System.Configuration.ConfigurationElement.LockItem*> if you want to put a general lock on the element itself and its child elements.



## Examples
 The following example shows how to use the <xref:System.Configuration.ConfigurationElement.LockAttributes> property.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet8":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet8":::

 ]]></format>
        </remarks>
        <block subset="none" type="overrides">
          <para>If you use the <see cref="P:System.Configuration.ConfigurationElement.LockAllAttributesExcept" /> and <see cref="P:System.Configuration.ConfigurationElement.LockAttributes" /> properties at the same time, the most restrictive rule applies.</para>
        </block>
        <altmember cref="T:System.Configuration.ConfigurationLockCollection" />
      </Docs>
    </Member>
    <Member MemberName="LockElements">
      <MemberSignature Language="C#" Value="public System.Configuration.ConfigurationLockCollection LockElements { get; }" />
      <MemberSignature Language="ILAsm" Value=".property instance class System.Configuration.ConfigurationLockCollection LockElements" />
      <MemberSignature Language="DocId" Value="P:System.Configuration.ConfigurationElement.LockElements" />
      <MemberSignature Language="VB.NET" Value="Public ReadOnly Property LockElements As ConfigurationLockCollection" />
      <MemberSignature Language="F#" Value="member this.LockElements : System.Configuration.ConfigurationLockCollection" Usage="System.Configuration.ConfigurationElement.LockElements" />
      <MemberSignature Language="C++ CLI" Value="public:&#xA; property System::Configuration::ConfigurationLockCollection ^ LockElements { System::Configuration::ConfigurationLockCollection ^ get(); };" />
      <MemberType>Property</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Configuration.ConfigurationLockCollection</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>Gets the collection of locked elements.</summary>
        <value>The <see cref="T:System.Configuration.ConfigurationLockCollection" /> of locked elements.</value>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.LockElements> property allows you to lock all the elements you specify.

 To do that, you use the <xref:System.Configuration.ConfigurationLockCollection.Contains*> method, as explained in the next example.

> [!NOTE]
>  The <xref:System.Configuration.ConfigurationElement.LockElements> property allows you to prevent the child configuration elements of the element to which you apply the rule from being modified. Use <xref:System.Configuration.ConfigurationElement.LockItem*> if you want to put a general lock on the element itself and its child elements.



## Examples
 The following example shows how to use the <xref:System.Configuration.ConfigurationElement.LockElements> property.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet4":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet4":::

 ]]></format>
        </remarks>
        <altmember cref="T:System.Configuration.ConfigurationLockCollection" />
      </Docs>
    </Member>
    <Member MemberName="LockItem">
      <MemberSignature Language="C#" Value="public bool LockItem { get; set; }" />
      <MemberSignature Language="ILAsm" Value=".property instance bool LockItem" />
      <MemberSignature Language="DocId" Value="P:System.Configuration.ConfigurationElement.LockItem" />
      <MemberSignature Language="VB.NET" Value="Public Property LockItem As Boolean" />
      <MemberSignature Language="F#" Value="member this.LockItem : bool with get, set" Usage="System.Configuration.ConfigurationElement.LockItem" />
      <MemberSignature Language="C++ CLI" Value="public:&#xA; property bool LockItem { bool get(); void set(bool value); };" />
      <MemberType>Property</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Boolean</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>Gets or sets a value indicating whether the element is locked.</summary>
        <value>
          <see langword="true" /> if the element is locked; otherwise, <see langword="false" />. The default is <see langword="false" />.</value>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 Use the <xref:System.Configuration.ConfigurationElement.LockItem> property if you want to put a general lock on the element itself and its child elements.



## Examples
 The following example shows how to use the <xref:System.Configuration.ConfigurationElement.LockItem*>.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/ConfigurationElement.cs" id="Snippet3":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/ConfigurationElement.vb" id="Snippet3":::

 ]]></format>
        </remarks>
        <exception cref="T:System.Configuration.ConfigurationErrorsException">The element has already been locked at a higher configuration level.</exception>
      </Docs>
    </Member>
    <Member MemberName="OnDeserializeUnrecognizedAttribute">
      <MemberSignature Language="C#" Value="protected virtual bool OnDeserializeUnrecognizedAttribute (string name, string value);" />
      <MemberSignature Language="ILAsm" Value=".method familyhidebysig newslot virtual instance bool OnDeserializeUnrecognizedAttribute(string name, string value) cil managed" />
      <MemberSignature Language="DocId" Value="M:System.Configuration.ConfigurationElement.OnDeserializeUnrecognizedAttribute(System.String,System.String)" />
      <MemberSignature Language="VB.NET" Value="Protected Overridable Function OnDeserializeUnrecognizedAttribute (name As String, value As String) As Boolean" />
      <MemberSignature Language="F#" Value="abstract member OnDeserializeUnrecognizedAttribute : string * string -&gt; bool&#xA;override this.OnDeserializeUnrecognizedAttribute : string * string -&gt; bool" Usage="configurationElement.OnDeserializeUnrecognizedAttribute (name, value)" />
      <MemberSignature Language="C++ CLI" Value="protected:&#xA; virtual bool OnDeserializeUnrecognizedAttribute(System::String ^ name, System::String ^ value);" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Boolean</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="name" Type="System.String" />
        <Parameter Name="value" Type="System.String" />
      </Parameters>
      <Docs>
        <param name="name">The name of the unrecognized attribute.</param>
        <param name="value">The value of the unrecognized attribute.</param>
        <summary>Gets a value indicating whether an unknown attribute is encountered during deserialization.</summary>
        <returns>
          <see langword="true" /> when an unknown attribute is encountered while deserializing; otherwise, <see langword="false" />.</returns>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.OnDeserializeUnrecognizedAttribute*> is invoked when an unknown attribute is encountered while deserializing the <xref:System.Configuration.ConfigurationElement> object.

 ]]></format>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="OnDeserializeUnrecognizedElement">
      <MemberSignature Language="C#" Value="protected virtual bool OnDeserializeUnrecognizedElement (string elementName, System.Xml.XmlReader reader);" />
      <MemberSignature Language="ILAsm" Value=".method familyhidebysig newslot virtual instance bool OnDeserializeUnrecognizedElement(string elementName, class System.Xml.XmlReader reader) cil managed" />
      <MemberSignature Language="DocId" Value="M:System.Configuration.ConfigurationElement.OnDeserializeUnrecognizedElement(System.String,System.Xml.XmlReader)" />
      <MemberSignature Language="VB.NET" Value="Protected Overridable Function OnDeserializeUnrecognizedElement (elementName As String, reader As XmlReader) As Boolean" />
      <MemberSignature Language="F#" Value="abstract member OnDeserializeUnrecognizedElement : string * System.Xml.XmlReader -&gt; bool&#xA;override this.OnDeserializeUnrecognizedElement : string * System.Xml.XmlReader -&gt; bool" Usage="configurationElement.OnDeserializeUnrecognizedElement (elementName, reader)" />
      <MemberSignature Language="C++ CLI" Value="protected:&#xA; virtual bool OnDeserializeUnrecognizedElement(System::String ^ elementName, System::Xml::XmlReader ^ reader);" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Boolean</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="elementName" Type="System.String" />
        <Parameter Name="reader" Type="System.Xml.XmlReader" />
      </Parameters>
      <Docs>
        <param name="elementName">The name of the unknown subelement.</param>
        <param name="reader">The <see cref="T:System.Xml.XmlReader" /> being used for deserialization.</param>
        <summary>Gets a value indicating whether an unknown element is encountered during deserialization.</summary>
        <returns>
          <see langword="true" /> when an unknown element is encountered while deserializing; otherwise, <see langword="false" />.</returns>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.OnDeserializeUnrecognizedElement*> is invoked when an unknown attribute is encountered while deserializing the <xref:System.Configuration.ConfigurationElement> object.

 ]]></format>
        </remarks>
        <exception cref="T:System.Configuration.ConfigurationErrorsException">The element identified by <paramref name="elementName" /> is locked.

-or-

 One or more of the element's attributes is locked.

-or-

 <paramref name="elementName" /> is unrecognized, or the element has an unrecognized attribute.

-or-

 The element has a Boolean attribute with an invalid value.

-or-

 An attempt was made to deserialize a property more than once.

-or-

 An attempt was made to deserialize a property that is not a valid member of the element.

-or-

 The element cannot contain a CDATA or text element.</exception>
      </Docs>
    </Member>
    <Member MemberName="OnRequiredPropertyNotFound">
      <MemberSignature Language="C#" Value="protected virtual object OnRequiredPropertyNotFound (string name);" />
      <MemberSignature Language="ILAsm" Value=".method familyhidebysig newslot virtual instance object OnRequiredPropertyNotFound(string name) cil managed" />
      <MemberSignature Language="DocId" Value="M:System.Configuration.ConfigurationElement.OnRequiredPropertyNotFound(System.String)" />
      <MemberSignature Language="VB.NET" Value="Protected Overridable Function OnRequiredPropertyNotFound (name As String) As Object" />
      <MemberSignature Language="F#" Value="abstract member OnRequiredPropertyNotFound : string -&gt; obj&#xA;override this.OnRequiredPropertyNotFound : string -&gt; obj" Usage="configurationElement.OnRequiredPropertyNotFound name" />
      <MemberSignature Language="C++ CLI" Value="protected:&#xA; virtual System::Object ^ OnRequiredPropertyNotFound(System::String ^ name);" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Object</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="name" Type="System.String" />
      </Parameters>
      <Docs>
        <param name="name">The name of the required attribute that was not found.</param>
        <summary>Throws an exception when a required property is not found.</summary>
        <returns>To be added.</returns>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.OnDeserializeUnrecognizedElement*> is invoked when an unknown attribute is encountered while deserializing the <xref:System.Configuration.ConfigurationElement> object.

 ]]></format>
        </remarks>
        <exception cref="T:System.Configuration.ConfigurationErrorsException">In all cases.</exception>
      </Docs>
    </Member>
    <Member MemberName="PostDeserialize">
      <MemberSignature Language="C#" Value="protected virtual void PostDeserialize ();" />
      <MemberSignature Language="ILAsm" Value=".method familyhidebysig newslot virtual instance void PostDeserialize() cil managed" />
      <MemberSignature Language="DocId" Value="M:System.Configuration.ConfigurationElement.PostDeserialize" />
      <MemberSignature Language="VB.NET" Value="Protected Overridable Sub PostDeserialize ()" />
      <MemberSignature Language="F#" Value="abstract member PostDeserialize : unit -&gt; unit&#xA;override this.PostDeserialize : unit -&gt; unit" Usage="configurationElement.PostDeserialize " />
      <MemberSignature Language="C++ CLI" Value="protected:&#xA; virtual void PostDeserialize();" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Void</ReturnType>
      </ReturnValue>
      <Parameters />
      <Docs>
        <summary>Called after deserialization.</summary>
        <remarks>To be added.</remarks>
      </Docs>
    </Member>
    <Member MemberName="PreSerialize">
      <MemberSignature Language="C#" Value="protected virtual void PreSerialize (System.Xml.XmlWriter writer);" />
      <MemberSignature Language="ILAsm" Value=".method familyhidebysig newslot virtual instance void PreSerialize(class System.Xml.XmlWriter writer) cil managed" />
      <MemberSignature Language="DocId" Value="M:System.Configuration.ConfigurationElement.PreSerialize(System.Xml.XmlWriter)" />
      <MemberSignature Language="VB.NET" Value="Protected Overridable Sub PreSerialize (writer As XmlWriter)" />
      <MemberSignature Language="F#" Value="abstract member PreSerialize : System.Xml.XmlWriter -&gt; unit&#xA;override this.PreSerialize : System.Xml.XmlWriter -&gt; unit" Usage="configurationElement.PreSerialize writer" />
      <MemberSignature Language="C++ CLI" Value="protected:&#xA; virtual void PreSerialize(System::Xml::XmlWriter ^ writer);" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>System.Configuration</AssemblyName>
        <AssemblyVersion>2.0.0.0</AssemblyVersion>
        <AssemblyVersion>4.0.0.0</AssemblyVersion>
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      <AssemblyInfo>
        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
        <AssemblyVersion>4.0.2.0</AssemblyVersion>
        <AssemblyVersion>4.0.3.0</AssemblyVersion>
        <AssemblyVersion>5.0.0.0</AssemblyVersion>
        <AssemblyVersion>6.0.0.0</AssemblyVersion>
        <AssemblyVersion>7.0.0.0</AssemblyVersion>
        <AssemblyVersion>8.0.0.0</AssemblyVersion>
        <AssemblyVersion>9.0.0.0</AssemblyVersion>
        <AssemblyVersion>10.0.0.0</AssemblyVersion>
        <AssemblyVersion>11.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>System.Void</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="writer" Type="System.Xml.XmlWriter" />
      </Parameters>
      <Docs>
        <param name="writer">The <see cref="T:System.Xml.XmlWriter" /> that will be used to serialize the <see cref="T:System.Configuration.ConfigurationElement" />.</param>
        <summary>Called before serialization.</summary>
        <remarks>To be added.</remarks>
      </Docs>
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## Remarks
 The <xref:System.Configuration.ConfigurationElement.Properties> property, also called the property bag, contains all the properties (attributes) that apply to the element.



## Examples
 For an example that shows how to use the <xref:System.Configuration.ConfigurationElement.Properties> property, refer to the <xref:System.Configuration.ConfigurationProperty> class.

 ]]></format>
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## Remarks
 The <xref:System.Configuration.ConfigurationElement.ResetModified*> method is automatically called after changes to this <xref:System.Configuration.ConfigurationElement> object have been written to the configuration file.

 ]]></format>
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## Examples
 The following example shows how to extend the <xref:System.Configuration.ConfigurationElement.SerializeElement*> method.

 :::code language="csharp" source="~/snippets/csharp/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/CS/CustomElement.cs" id="Snippet34":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/System.Configuration.ConfigurationElement/VB/CustomElement.vb" id="Snippet34":::

 ]]></format>
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        <AssemblyName>System.Configuration.ConfigurationManager</AssemblyName>
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      <ReturnValue>
        <ReturnType>System.Boolean</ReturnType>
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        <Parameter Name="writer" Type="System.Xml.XmlWriter" />
        <Parameter Name="elementName" Type="System.String" />
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      <Docs>
        <param name="writer">The <see cref="T:System.Xml.XmlWriter" /> that writes to the configuration file.</param>
        <param name="elementName">The name of the <see cref="T:System.Configuration.ConfigurationElement" /> to be written.</param>
        <summary>Writes the outer tags of this configuration element to the configuration file when implemented in a derived class.</summary>
        <returns>
          <see langword="true" /> if writing was successful; otherwise, <see langword="false" />.</returns>
        <remarks>
          <format type="text/markdown"><![CDATA[

## Remarks
 The <xref:System.Configuration.ConfigurationElement.SerializeToXmlElement*> method is called after the call to the <xref:System.Configuration.ConfigurationElement.Unmerge*> method during serialization. The <xref:System.Configuration.ConfigurationElement.SerializeToXmlElement*> method writes out the contents of the configuration element between the beginning and ending tags of the element. Override <xref:System.Configuration.ConfigurationElement.SerializeToXmlElement*> to provide a custom serialization method.

 ]]></format>
        </remarks>
        <exception cref="T:System.Exception">The element has multiple child elements.</exception>
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    <Member MemberName="SetPropertyValue">
      <MemberSignature Language="C#" Value="protected void SetPropertyValue (System.Configuration.ConfigurationProperty prop, object value, bool ignoreLocks);" />
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      <ReturnValue>
        <ReturnType>System.Void</ReturnType>
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      <Parameters>
        <Parameter Name="prop" Type="System.Configuration.ConfigurationProperty" />
        <Parameter Name="value" Type="System.Object" />
        <Parameter Name="ignoreLocks" Type="System.Boolean" />
      </Parameters>
      <Docs>
        <param name="prop">The element property to set.</param>
        <param name="value">The value to assign to the property.</param>
        <param name="ignoreLocks">
          <see langword="true" /> if the locks on the property should be ignored; otherwise, <see langword="false" />.</param>
        <summary>Sets a property to the specified value.</summary>
        <remarks>To be added.</remarks>
        <exception cref="T:System.Configuration.ConfigurationErrorsException">Occurs if the element is read-only or <paramref name="ignoreLocks" /> is <see langword="true" /> but the locks cannot be ignored.</exception>
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    <Member MemberName="SetReadOnly">
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        <summary>Sets the <see cref="M:System.Configuration.ConfigurationElement.IsReadOnly" /> property for the <see cref="T:System.Configuration.ConfigurationElement" /> object and all subelements.</summary>
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          <format type="text/markdown"><![CDATA[

## Remarks
 This method is used internally to set aside those system-configuration elements that cannot be modified.

 To determine which elements can be modified, use the <xref:System.Configuration.ConfigurationElement.IsReadOnly*> method.

 ]]></format>
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    <Member MemberName="Unmerge">
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      <ReturnValue>
        <ReturnType>System.Void</ReturnType>
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      <Parameters>
        <Parameter Name="sourceElement" Type="System.Configuration.ConfigurationElement" />
        <Parameter Name="parentElement" Type="System.Configuration.ConfigurationElement" />
        <Parameter Name="saveMode" Type="System.Configuration.ConfigurationSaveMode" />
      </Parameters>
      <Docs>
        <param name="sourceElement">A <see cref="T:System.Configuration.ConfigurationElement" /> at the current level containing a merged view of the properties.</param>
        <param name="parentElement">The parent <see cref="T:System.Configuration.ConfigurationElement" />, or <see langword="null" /> if this is the top level.</param>
        <param name="saveMode">One of the enumeration values that determines which property values to include.</param>
        <summary>Modifies the <see cref="T:System.Configuration.ConfigurationElement" /> object to remove all values that should not be saved. </summary>
        <remarks>To be added.</remarks>
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    </Member>
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