Move symbols programmatically...

Hello, I would like to write an EventHandler to process KeyDown-Events and to move selected shapes with arrow keys on the keyboard. I''ve tried out following: this.diagramComponent = new Syncfusion.Windows.Forms.Diagram.Controls.Diagram(); this.Controls.Add(this.diagramComponent); this.diagramComponent.KeyDown += new System.Windows.Forms.KeyEventHandler(this.diagramComponent _KeyDown); private void diagramComponent_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) { switch(e.KeyCode) { case Keys.Up: Syncfusion.Windows.Forms.Diagram.NodeCollection selNodes = new NodeCollection(); selNodes = this.diagramComponent.SelectionList; foreach (INode curNode in selNodes) { string childName = curNode.FullName; Syncfusion.Windows.Forms.Diagram.INode tmpNode; tmpNode = this.diagramComponent.Model.GetChildByName(childName); Syncfusion.Windows.Forms.Diagram.MoveCmd moveNodes = new MoveCmd(0, 1); moveNodes.Nodes.Add(tmpNode); } break; case Keys.Down: MessageBox.Show("DOWN"); break; case Keys.Left: MessageBox.Show("LEFT"); break; case Keys.Right: MessageBox.Show("RIGHT"); break; } base.OnKeyDown (e); } But nothing is happened. I guess there is either something wrong with EventHandler or this is the wrong way to move symbols. Has anybody already solved a similar issue like this one?