bugfix : Collection Instance == 0 fixes: Animation1 Unit Test

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

@@ -22,6 +22,7 @@ using System.ComponentModel;
 using System.Globalization;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Reflection;
 using System.Windows;
 using System.Windows.Interop;
@@ -326,37 +327,53 @@ namespace ICSharpCode.WpfDesign.XamlDom
 					}
 				}
 			}
-			
+
-			foreach (XmlNode childNode in elementChildNodes) {
+		    if (collectionType != null && collectionInstance == null && elementChildNodes.Count() == 1)
-				XmlElement childElement = childNode as XmlElement;
+            {
-				if (childElement != null) {
+                var firstChild = elementChildNodes.First() as XmlElement;
-					if (childElement.NamespaceURI == XamlConstants.XamlNamespace)
+                if (ObjectChildElementIsCollectionInstance(firstChild, collectionType))
-						continue;
+                {
+                    collectionInstance = ParseObject(firstChild);
+                    collectionProperty.PropertyValue = (XamlPropertyValue) collectionInstance;
+                }
+                else
+                {
+                    throw new XamlLoadException("Collection Instance is null");
+                }
+            }
+			else
+            {
+		        foreach (XmlNode childNode in elementChildNodes) {
+			        XmlElement childElement = childNode as XmlElement;
+			        if (childElement != null) {
+				        if (childElement.NamespaceURI == XamlConstants.XamlNamespace)
+					        continue;
 					
-					if (ObjectChildElementIsPropertyElement(childElement)) {
+				        if (ObjectChildElementIsPropertyElement(childElement)) {
-						ParseObjectChildElementAsPropertyElement(obj, childElement, defaultProperty);
+					        ParseObjectChildElementAsPropertyElement(obj, childElement, defaultProperty);
-						continue;
+					        continue;
-					}
+				        }
-				}
+			        }
-				if (initializeFromTextValueInsteadOfConstructor != null)
+			        if (initializeFromTextValueInsteadOfConstructor != null)
-					continue;
+				        continue;
-				XamlPropertyValue childValue = ParseValue(childNode);
+			        XamlPropertyValue childValue = ParseValue(childNode);
-				if (childValue != null) {
+			        if (childValue != null) {
-					if (collectionProperty != null) {
+				        if (collectionProperty != null) {
-						collectionProperty.ParserAddCollectionElement(collectionPropertyElement, childValue);
+					        collectionProperty.ParserAddCollectionElement(collectionPropertyElement, childValue);
-						CollectionSupport.AddToCollection(collectionType, collectionInstance, childValue);
+					        CollectionSupport.AddToCollection(collectionType, collectionInstance, childValue);
-					} else {
+				        } else {
-						if (defaultProperty == null)
+					        if (defaultProperty == null)
-							throw new XamlLoadException("This element does not have a default value, cannot assign to it");
+						        throw new XamlLoadException("This element does not have a default value, cannot assign to it");
 						
-						if (isDefaultValueSet)
+					        if (isDefaultValueSet)
-							throw new XamlLoadException("default property may have only one value assigned");
+						        throw new XamlLoadException("default property may have only one value assigned");
 						
-						obj.AddProperty(new XamlProperty(obj, defaultProperty, childValue));
+					        obj.AddProperty(new XamlProperty(obj, defaultProperty, childValue));
-						isDefaultValueSet = true;
+					        isDefaultValueSet = true;
-					}
+				        }
-				}
+			        }
-			}
+		        }
+            }
 		}
 
 		IEnumerable<XmlNode> GetNormalizedChildNodes(XmlElement element)
@@ -581,7 +598,12 @@ namespace ICSharpCode.WpfDesign.XamlDom
 		{
 			return element.LocalName.Contains(".");
 		}
-		
+
+        static bool ObjectChildElementIsCollectionInstance(XmlElement element, Type collectionType)
+        {
+            return element.Name == collectionType.Name;
+        }
+
 		static bool IsElementChildACollectionForProperty(XamlTypeFinder typeFinder, XmlElement element, XamlPropertyInfo propertyInfo)
 		{
 			return element.ChildNodes.Count == 1 && propertyInfo.ReturnType.IsAssignableFrom(FindType(typeFinder, element.FirstChild.NamespaceURI, element.FirstChild.LocalName));