Remove Name from a Pasted Control when it exists in the NameScope

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/ModelTools.cs

@@ -86,6 +86,9 @@ namespace ICSharpCode.WpfDesign.Designer
 				if (selectionService.SelectionCount == 0 && !items.Contains(parent)) {
 					selectionService.SetSelectedComponents(new DesignItem[] { parent });
 				}
+				foreach (var designItem in items) {
+					designItem.Name = null;
+				}
 				operation.DeleteItemsAndCommit();
 			} catch {
 				operation.Abort();

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Xaml/XamlComponentService.cs

@@ -5,6 +5,7 @@ using System;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using System.Windows.Markup;
+using System.Windows;
 
 using ICSharpCode.WpfDesign.XamlDom;
 
@@ -87,6 +88,14 @@ namespace ICSharpCode.WpfDesign.Designer.Xaml
 			if (ComponentRegistered != null) {
 				ComponentRegistered(this, new DesignItemEventArgs(site));
 			}
+			
+			if (_context.RootItem != null && !string.IsNullOrEmpty(site.Name)) {
+				var nameScope = _context.RootItem.Component as INameScope;
+				nameScope = NameScope.GetNameScope((DependencyObject) _context.RootItem.Component);
+				var fnd = nameScope.FindName(site.Name);
+				if (fnd != null)
+					site.Name = null;
+			}
 			return site;
 		}
 	}