* Fix errors

Author: PWagner1

Source/Krypton Toolkit/Krypton.Toolkit.Suite.Extended.Buttons/Krypton.Toolkit.Suite.Extended.Buttons 2022.csproj

@@ -102,6 +102,10 @@
 		</Otherwise>
 	</Choose>
 
+	<ItemGroup>
+		<Compile Include="..\Krypton.Toolkit.Suite.Extended.Common\Utilities\AllowNullAttribute.cs" Link="General\AllowNullAttribute.cs" />
+	</ItemGroup>
+
 	<ItemGroup>
 		<PackageReference Include="WindowsAPICodePackShell" Version="8.0.15.2" />
 

Source/Krypton Toolkit/Krypton.Toolkit.Suite.Extended.CheckSum.Tools/Classes/HashingHelpers.cs

@@ -91,7 +91,10 @@ public static SafeNETCoreAndNewerSupportedHashAlgorithims ReturnHashType(string
 
     public static string BuildMD5HashString(byte[]? hashBytes)
     {
-        ArgumentNullException.ThrowIfNull(hashBytes);
+        if (hashBytes is null)
+        {
+            throw new ArgumentNullException(nameof(hashBytes));
+        }
 
         // Set aside 32 bits in memory, for the total string length of the MD5 hash
         StringBuilder builder = new StringBuilder(32);
@@ -106,7 +109,10 @@ public static string BuildMD5HashString(byte[]? hashBytes)
 
     public static string BuildSHA1HashString(byte[]? hashBytes)
     {
-        ArgumentNullException.ThrowIfNull(hashBytes);
+        if (hashBytes is null)
+        {
+            throw new ArgumentNullException(nameof(hashBytes));
+        }
 
         // Set aside 40 bits in memory, for the total string length of the SHA-1 hash
         StringBuilder builder = new StringBuilder(40);
@@ -121,7 +127,10 @@ public static string BuildSHA1HashString(byte[]? hashBytes)
 
     public static string BuildSHA256HashString(byte[]? hashBytes)
     {
-        ArgumentNullException.ThrowIfNull(hashBytes);
+        if (hashBytes is null)
+        {
+            throw new ArgumentNullException(nameof(hashBytes));
+        }
 
         // Set aside 64 bits in memory, for the total string length of the SHA-256 hash
         StringBuilder builder = new StringBuilder(64);
@@ -136,7 +145,10 @@ public static string BuildSHA256HashString(byte[]? hashBytes)
 
     public static string BuildSHA384HashString(byte[]? hashBytes)
     {
-        ArgumentNullException.ThrowIfNull(hashBytes);
+        if (hashBytes is null)
+        {
+            throw new ArgumentNullException(nameof(hashBytes));
+        }
 
         // Set aside 96 bits in memory, for the total string length of the SHA-384 hash
         StringBuilder builder = new StringBuilder(96);
@@ -151,7 +163,10 @@ public static string BuildSHA384HashString(byte[]? hashBytes)
 
     public static string BuildSHA512HashString(byte[]? hashBytes)
     {
-        ArgumentNullException.ThrowIfNull(hashBytes);
+        if (hashBytes is null)
+        {
+            throw new ArgumentNullException(nameof(hashBytes));
+        }
 
         // Set aside 128 bits in memory, for the total string length of the SHA-512 hash
         StringBuilder builder = new StringBuilder(128);
@@ -166,7 +181,10 @@ public static string BuildSHA512HashString(byte[]? hashBytes)
 
     public static string BuildRIPEMD160HashString(byte[]? hashBytes)
     {
-        ArgumentNullException.ThrowIfNull(hashBytes);
+        if (hashBytes is null)
+        {
+            throw new ArgumentNullException(nameof(hashBytes));
+        }
 
         // Set aside 40 bits in memory, for the total string length of the RIPEMD-160 hash
         StringBuilder builder = new StringBuilder(40);

Source/Krypton Toolkit/Krypton.Toolkit.Suite.Extended.Core/Classes/Security/RandomPassword.cs

@@ -144,7 +144,14 @@ public class RandomPassword
         byte[] randomBytes = new byte[4];
 
         // Generate 4 random bytes.
+#if NETCOREAPP2_1_OR_GREATER
         System.Security.Cryptography.RandomNumberGenerator.Fill(randomBytes);
+#else
+        using (var rng = System.Security.Cryptography.RandomNumberGenerator.Create())
+        {
+            rng.GetBytes(randomBytes);
+        }
+#endif
 
         // Convert 4 bytes into a 32-bit integer value.
         int seed = BitConverter.ToInt32(randomBytes, 0);

Source/Krypton Toolkit/Krypton.Toolkit.Suite.Extended.Error.Reporting/Krypton.Toolkit.Suite.Extended.Error.Reporting 2022.csproj

@@ -117,7 +117,7 @@
 		<PackageReference Include="System.Management" Version="11.0.0-preview.5.26302.115" />
 	</ItemGroup>
 
-	<ItemGroup Condition="'$(TargetFramework)' == 'net462' Or '$(TargetFramework)' == 'net48' Or '$(TargetFramework)' == 'net481'">
+	<ItemGroup Condition="'$(TargetFramework)' == 'net462' Or '$(TargetFramework)' == 'net472' Or '$(TargetFramework)' == 'net48' Or '$(TargetFramework)' == 'net481'">
 		<Reference Include="System.Deployment" />
 		<Reference Include="System.Net.Http">
 		  <HintPath>C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.2\System.Net.Http.dll</HintPath>

Source/Krypton Toolkit/Krypton.Toolkit.Suite.Extended.Messagebox/Krypton.Toolkit.Suite.Extended.Messagebox 2022.csproj

@@ -117,6 +117,10 @@
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
 
+	<ItemGroup>
+		<Compile Include="..\Krypton.Toolkit.Suite.Extended.Common\Utilities\AllowNullAttribute.cs" Link="General\AllowNullAttribute.cs" />
+	</ItemGroup>
+
 	<ItemGroup>
 		<Compile Update="Properties\Resources.Designer.cs">
 			<DesignTime>True</DesignTime>

Source/Krypton Toolkit/Krypton.Toolkit.Suite.Extended.VirtualTreeColumnView/Krypton.Toolkit.Suite.Extended.VirtualTreeColumnView 2022.csproj

@@ -117,6 +117,10 @@
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
 
+	<ItemGroup>
+		<Compile Include="..\Krypton.Toolkit.Suite.Extended.Common\Utilities\AllowNullAttribute.cs" Link="General\AllowNullAttribute.cs" />
+	</ItemGroup>
+
 	<ItemGroup>
 		<EditorConfigFiles Remove=".editorconfig" />
 	</ItemGroup>