WPF designer now looks in project references for assemblies when opening the designer.

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.AddIn/Src/MyTypeFinder.cs

@@ -33,17 +33,31 @@ namespace ICSharpCode.WpfDesign.AddIn
 				}
 				return null;
 			} else {
-				// Load any other assembly from the solution.
+				Assembly assembly = FindAssemblyInProjectReferences(name);
-				foreach(var project in ProjectService.OpenSolution.Projects) {
+				if (assembly != null) {
-					if(project.AssemblyName==name) {
+					return assembly;
-						var pc = ParserService.GetProjectContent(project);
+				}
-						if (pc != null)
+				return base.LoadAssembly(name);
-							return this.typeResolutionService.LoadAssembly(pc);
+			}
+		}
+		
+		Assembly FindAssemblyInProjectReferences(string name)
+		{
+			IProjectContent pc = GetProjectContent(file);
+			if (pc != null) {
+				return FindAssemblyInProjectReferences(pc, name);
+			}
+			return null;
 		}
 		
+		Assembly FindAssemblyInProjectReferences(IProjectContent pc, string name)
+		{
+			foreach (IProjectContent referencedProjectContent in pc.ReferencedContents) {
+				if (name == referencedProjectContent.AssemblyName) {
+					return this.typeResolutionService.LoadAssembly(referencedProjectContent);
 				}
-				return base.LoadAssembly(name);
 			}
+			return null;
 		}
 		
 		public override XamlTypeFinder Clone()