Index: src/DeltaShell/DeltaShell.Gui/Forms/PropertyGrid/PropertyGrid.cs
===================================================================
diff -u -r19d4a1177bc138fe01b13dcd1ffffa1107d71a99 -r4bf6fe9e8e7f044806697a836aef9c4dba1d6b70
--- src/DeltaShell/DeltaShell.Gui/Forms/PropertyGrid/PropertyGrid.cs	(.../PropertyGrid.cs)	(revision 19d4a1177bc138fe01b13dcd1ffffa1107d71a99)
+++ src/DeltaShell/DeltaShell.Gui/Forms/PropertyGrid/PropertyGrid.cs	(.../PropertyGrid.cs)	(revision 4bf6fe9e8e7f044806697a836aef9c4dba1d6b70)
@@ -77,6 +77,7 @@
                     return;
                 }
                 propertyGrid1.Refresh();
+                refreshTimer.Stop();
             };
             refreshTimer.Interval = 300;
             refreshTimer.Enabled = true;
@@ -101,7 +102,7 @@
 
         public void UpdateObserver()
         {
-            // refresh expected here
+            refreshTimer.Start();
         }
 
         public object GetObjectProperties(object sourceData)
@@ -144,6 +145,11 @@
             return null;
         }
 
+        public override void Refresh()
+        {
+            refreshTimer.Start();    
+        }
+
         private object SelectedObject
         {
             get