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WPF - strange context menu behaviour

Posted By:      Posted Date: September 20, 2010    Points: 0   Category :WPF
 

Hi 

I create contextmenu using that code

 

 protected MenuItem itemAdd, itemDelete, itemSelectBranch, itemDeleteClasp;
  protected MenuItem itemCut, itemCopy, itemPaste, itemAddParent, itemPasteWithChildren;
  protected MenuItem itemAddTask, itemAddExtTask, itemAddMileStone;
 menu = new ContextMenu();
    itemAdd = new MenuItem
           {
             HorizontalAlignment = HorizontalAlignment.Left,
             HorizontalContentAlignment = System.Windows.HorizontalAlignment.Stretch,
             Header = "Add"
           };
    itemDelete = new MenuItem
             {
               HorizontalAlignment = HorizontalAlignment.Left,
               HorizontalContentAlignment = System.Windows.HorizontalAlignment.Stretch,
               Header = "Delete"
             };
    itemSelectBranch = new MenuItem
    {
      HorizontalAlignment = HorizontalAlignment.Left,
      HorizontalContentAlignment = System.Windows.HorizontalAlignment.Stretch,
                  Header =  

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