--- a/Implab.Fx/PromiseHelpers.cs	Wed Sep 03 18:34:02 2014 +0400
+++ b/Implab.Fx/PromiseHelpers.cs	Thu Sep 04 18:47:12 2014 +0400
@@ -1,7 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
 using System.Windows.Forms;
 using System.Threading;
 
@@ -32,22 +29,14 @@
             if (ctl == null)
                 throw new ArgumentNullException("ctl");
 
-            var directed = new Promise<T>();
+            var directed = new ControlBoundPromise<T>(ctl,that,true);
 
             that.Then(
-                res =>
-                {
-                    if (ctl.InvokeRequired)
-                        ctl.Invoke(new Action<T>(directed.Resolve), res);
-                    else
-                        directed.Resolve(res);
-                },
+                directed.Resolve,
                 err =>
                 {
-                    if (ctl.InvokeRequired)
-                        ctl.Invoke(new Action<Exception>(directed.Reject), err);
-                    else
-                        directed.Reject(err);
+                    directed.Reject(err);
+                    return default(T);
                 }
             );
 
@@ -86,7 +75,10 @@
 
             that.Then(
                 res => sync.Post(state => d.Resolve(res), null),
-                err => sync.Post(state => d.Reject(err), null)
+                err => {
+                    sync.Post(state => d.Reject(err), null);
+                    return default(T);
+                }
             );
 
             return d;