fix #29929

2011-01-20 14:04:32 -01:00
parent b82a251bb8
commit 4af6ea2b3c
1 changed files with 3 additions and 1 deletions
--- a/umbraco/presentation/umbraco/Trees/TreeDefinitionCollection.cs
+++ b/umbraco/presentation/umbraco/Trees/TreeDefinitionCollection.cs
@@ -64,7 +64,9 @@ namespace umbraco.cms.presentation.Trees
            TreeDefinition foundTree = this.Find(
               delegate(TreeDefinition t)
               {
-                   return t.TreeType.Equals(typeof(T));
+                   // zb-00002 #29929 : use IsAssignableFrom instead of Equal, otherwise you can't override build-in
+                   // trees because for ex. PermissionEditor.aspx.cs OnInit calls FindTree<loadContent>()
+                   return typeof(T).IsAssignableFrom(t.TreeType);
               }
           );
            if (foundTree != null)