Fixed forms designer not updating toolbar status when selecting controls / changing properties.

src/AddIns/DisplayBindings/FormsDesigner/Project/FormsDesigner.csproj

@@ -44,6 +44,9 @@
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="PresentationCore">
+      <RequiredTargetFramework>3.0</RequiredTargetFramework>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Design" />

src/AddIns/DisplayBindings/FormsDesigner/Project/Src/DesignerViewContent.cs

@@ -336,6 +336,7 @@ namespace ICSharpCode.FormsDesigner
 			hasUnmergedChanges = true;
 			this.DesignerCodeFile.MakeDirty();
 			this.resourceStore.MarkResourceFilesAsDirty();
+			System.Windows.Input.CommandManager.InvalidateRequerySuggested();
 		}
 		
 		bool shouldUpdateSelectableObjects = false;
@@ -686,6 +687,7 @@ namespace ICSharpCode.FormsDesigner
 			object[] selArray = new object[selection.Count];
 			selection.CopyTo(selArray, 0);
 			propertyContainer.SelectedObjects = selArray;
+			System.Windows.Input.CommandManager.InvalidateRequerySuggested();
 		}
 		
 		protected void UpdatePropertyPad()