Keep user.settings after upgrade

- Fixes #234
- Love the kitty anyway

Author: bitbeans

SimpleDnsCrypt/App.config

@@ -65,6 +65,9 @@
             <setting name="QueryLogFile" serializeAs="String">
                 <value />
             </setting>
+            <setting name="UpgradeRequired" serializeAs="String">
+                <value>True</value>
+            </setting>
         </SimpleDnsCrypt.Properties.Settings>
     </userSettings>
 </configuration>

SimpleDnsCrypt/Properties/Settings.Designer.cs

@@ -41,5 +41,8 @@
     <Setting Name="QueryLogFile" Type="System.String" Scope="User">
       <Value Profile="(Default)" />
     </Setting>
+    <Setting Name="UpgradeRequired" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">True</Value>
+    </Setting>
   </Settings>
 </SettingsFile>

SimpleDnsCrypt/Properties/Settings.settings

@@ -182,6 +182,13 @@ private async void InitializeApplication()
 		[ImportingConstructor]
 		public LoaderViewModel(IWindowManager windowManager, IEventAggregator events)
 		{
+			if (Properties.Settings.Default.UpgradeRequired)
+			{
+				Properties.Settings.Default.Upgrade();
+				Properties.Settings.Default.UpgradeRequired = false;
+				Properties.Settings.Default.Save();
+			}
+
 			_windowManager = windowManager;
 			_events = events;
 			_events.Subscribe(this);