Fixed bug; If a Binding inside a MultiBinding is referencing a resource not available until the MultiBinding is added to the tree, the resource was not resolved.

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Tests/Designer/ModelTests.cs

@@ -895,6 +895,52 @@ namespace ICSharpCode.WpfDesign.Tests.Designer
 			AssertLog("");
 		}
 		
+		[Test]
+		public void AddBindingWithStaticResourceToMultiBinding()
+		{
+			DesignItem textBox = CreateCanvasContext("<TextBox/>");
+			
+			DesignItem canvasItem = textBox.Parent;
+			DesignItemProperty canvasResources = canvasItem.Properties.GetProperty("Resources");
+			
+			DesignItem exampleClassItem = textBox.Services.Component.RegisterComponentForDesigner(new ICSharpCode.WpfDesign.Tests.XamlDom.ExampleClass());
+			exampleClassItem.Key = "testKey";
+			exampleClassItem.Properties["StringProp"].SetValue("String value");
+			canvasResources.CollectionElements.Add(exampleClassItem);
+			
+			DesignItem multiBindingItem = textBox.Context.Services.Component.RegisterComponentForDesigner(new MultiBinding());
+			multiBindingItem.Properties["Converter"].SetValue(new ReturnFirstValueMultiConverter());
+			DesignItemProperty bindingsProp = multiBindingItem.ContentProperty;
+			
+			DesignItem myBindingExtension = textBox.Context.Services.Component.RegisterComponentForDesigner(new Binding());
+			myBindingExtension.Properties["Path"].SetValue("StringProp");
+			myBindingExtension.Properties["Source"].SetValue(new StaticResourceExtension());
+			myBindingExtension.Properties["Source"].Value.Properties["ResourceKey"].SetValue("testKey");
+			
+			// Adding it to MultiBinding "Bindings" collection.
+			bindingsProp.CollectionElements.Add(myBindingExtension);
+			
+			textBox.ContentProperty.SetValue(multiBindingItem);
+			
+			// Verify that the text have the expected value, proving that the StaticResource have been resolved.
+			Assert.AreEqual("String value", ((TextBox)textBox.Component).Text);
+			
+			const string expectedXaml = "<Canvas.Resources>\n" +
+										"  <Controls0:ExampleClass x:Key=\"testKey\" StringProp=\"String value\" />\n" +
+										"</Canvas.Resources>\n" +
+										"<TextBox>\n" +
+										"  <MultiBinding>\n" +
+										"    <MultiBinding.Converter>\n" +
+										"      <t:ReturnFirstValueMultiConverter />\n" +
+										"    </MultiBinding.Converter>\n" +
+										"    <Binding Path=\"StringProp\" Source=\"{StaticResource testKey}\" />\n" +
+										"  </MultiBinding>\n" +
+										"</TextBox>";
+			
+			AssertCanvasDesignerOutput(expectedXaml, textBox.Context, "xmlns:Controls0=\"" + ICSharpCode.WpfDesign.Tests.XamlDom.XamlTypeFinderTests.XamlDomTestsNamespace + "\"");
+			AssertLog("");
+		}
+		
 		[Test]
 		public void AddBrushAsResource()
 		{
@@ -1024,6 +1070,22 @@ namespace ICSharpCode.WpfDesign.Tests.Designer
 		}
 	}
 	
+	public class ReturnFirstValueMultiConverter : IMultiValueConverter
+	{
+		public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+		{
+			if(values != null && values.Length > 0) {
+				return values[0];
+			} else {
+				return System.Windows.DependencyProperty.UnsetValue;
+			}
+		}
+		public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
+		{
+			throw new NotImplementedException();
+		}
+	}
+	
 	public class ExampleClass
 	{
 		string stringProp;

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.XamlDom/Project/XamlObject.cs

@@ -283,9 +283,18 @@ namespace ICSharpCode.WpfDesign.XamlDom
 		
 		void UpdateChildMarkupExtensions(XamlObject obj)
 		{
-			foreach (XamlObject propXamlObject in obj.Properties.Where((prop) => prop.IsSet).Select((prop) => prop.PropertyValue).OfType<XamlObject>()) {
+			foreach (var prop in obj.Properties) {
+				if (prop.IsSet) {
+					var propXamlObject = prop.PropertyValue as XamlObject;
+					if (propXamlObject != null) {
 						UpdateChildMarkupExtensions(propXamlObject);
 					}
+				} else if (prop.IsCollection) {
+					foreach (var propXamlObject in prop.CollectionElements.OfType<XamlObject>()) {
+						UpdateChildMarkupExtensions(propXamlObject);
+					}
+				}
+			}
 
 			if (obj.IsMarkupExtension && obj.ParentProperty != null) {
 				obj.ParentProperty.UpdateValueOnInstance();

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.XamlDom/Project/XamlProperty.cs

@@ -266,6 +266,15 @@ namespace ICSharpCode.WpfDesign.XamlDom
 				catch (Exception ex) {
 					Debug.WriteLine("UpdateValueOnInstance() failed - Exception:" + ex.Message);
 				}
+			} else if (IsCollection) {
+				var list = ValueOnInstance as System.Collections.IList;
+				if (list != null) {
+					list.Clear();
+					foreach (var item in CollectionElements) {
+						var newValue = item.GetValueFor(propertyInfo);
+						list.Add(newValue);
+					}
+				}
 			}
 		}