Object graph visualizer starting to work.

src/AddIns/Debugger/Debugger.AddIn/Visualizers/GraphVisualizer/ObjectGraph/ObjectGraphBuilder.cs

@@ -190,7 +190,9 @@ namespace Debugger.AddIn.Visualizers.Graph
 				LoadNodeObjectContent(baseClassNode, expression, baseType);
 			}
 			
-			var members = type.GetFieldsAndNonIndexedProperties(GetMemberOptions.IgnoreInheritedMembers).Where(m => !m.IsStatic).ToList();
+			var members = type.GetFieldsAndNonIndexedProperties(GetMemberOptions.IgnoreInheritedMembers).
+				Where(m => !m.IsStatic && !m.IsSynthetic && !m.Name.EndsWith(">k__BackingField")).
+				ToList();
 			// non-public members
 			var nonPublicProperties = createProperties(expression, members.Where(m => !m.IsPublic));
 			if (nonPublicProperties.Count > 0) {

src/AddIns/Debugger/Debugger.AddIn/Visualizers/GraphVisualizer/ObjectGraphControl.xaml.cs

@@ -107,7 +107,8 @@ namespace Debugger.AddIn.Visualizers.Graph
 					RefreshView();
 					return;
 				}
-				if (shownExpression == null || value.Expr != shownExpression.Expr) {
+				if (shownExpression == null || shownExpression.Expr != value.Expr) {
+					shownExpression = value;
 					txtExpression.Text = value.Expr;
 					RefreshView();
 				}

src/AddIns/Debugger/Debugger.AddIn/Visualizers/Utils/DebuggerHelpers.cs

@@ -93,7 +93,7 @@ namespace Debugger.AddIn.Visualizers.Utils
 					value.Type.GetDefinition().Compilation.FindType(
 						typeof(System.Runtime.CompilerServices.RuntimeHelpers)
 					).GetDefinition();
-				hashCodeMethod = runtimeHelpers.GetMethods(m => m.FullName == "GetHashCode").FirstOrDefault();
+				hashCodeMethod = runtimeHelpers.GetMethods(m => m.Name == "GetHashCode" && m.Parameters.Count == 1).FirstOrDefault();
 				if (hashCodeMethod == null) {
 					throw new DebuggerException(
 						"Cannot find method System.Runtime.CompilerServices.RuntimeHelpers.GetHashCode().");