From 1c663b022e0141d1c7bee20c9efd6ec2c4662726 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Mon, 3 Feb 2014 17:07:59 +0100
Subject: [PATCH] fix #336: Implement interface in code-behind .xaml.cs tries
 to insert interface implementation in .xaml file

---
 .../Project/Src/Refactoring/EditorScript.cs              | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/AddIns/BackendBindings/CSharpBinding/Project/Src/Refactoring/EditorScript.cs b/src/AddIns/BackendBindings/CSharpBinding/Project/Src/Refactoring/EditorScript.cs
index 809c5a4503..13043086d3 100644
--- a/src/AddIns/BackendBindings/CSharpBinding/Project/Src/Refactoring/EditorScript.cs
+++ b/src/AddIns/BackendBindings/CSharpBinding/Project/Src/Refactoring/EditorScript.cs
@@ -30,6 +30,7 @@ using ICSharpCode.NRefactory.CSharp.Refactoring;
 using ICSharpCode.NRefactory.Editor;
 using ICSharpCode.NRefactory.TypeSystem;
 using ICSharpCode.SharpDevelop;
+using ICSharpCode.SharpDevelop.Dom;
 using ICSharpCode.SharpDevelop.Editor;
 
 namespace CSharpBinding.Refactoring
@@ -188,7 +189,13 @@ namespace CSharpBinding.Refactoring
 			var tcs = new TaskCompletionSource<Script>();
 			if (parentType == null)
 				return tcs.Task;
-			var part = parentType.Parts.FirstOrDefault ();
+			IUnresolvedTypeDefinition part = null;
+			
+			foreach (var p in parentType.Parts) {
+				if (part == null || EntityModelContextUtils.IsBetterPart(p, part, ".cs"))
+					part = p;
+			}
+			
 			if (part == null)
 				return tcs.Task;