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• Ahmad

  Posted on Jan 8, 2012 (permalink)

  i had an wpf application contains radtreeview ,i add HierarchicalDataTemplate inside RadTreeview Item Template which contains:
  
  1- RadComboBox 
  2- grid contains three textboxs and radcombobox.
  
  when radcomobox selectionchanged the grid bind data into textboxes  according to the selected value in the combobox.
  
  how i can return the current row when RadComboBox is changed, and how i get the contorls inside the row as well.
  
  Regards 
  
  
  

  Reply

• Petar Mladenov Petar Mladenov

  Posted on Jan 11, 2012 (permalink)

  Hi Ahmad,

   In a good MVVM design, you will be able to detect the current RadTreeViewItem (the selected one), current Row in a GridView, current item that is in edit Mode and etc. So I suggest you work with ViewModels only - bind the controls in the Template to a properties in your ViewModels and change only the ViewModels.
  However, if you need to access a control down or up in the Visual tree you can use the Telerik's extension methods ParentOfType<>, or ChildrenOfType<>. Two things are important here- Popups( the DropDownContent of a DropDownButton is usually a Popup) are in a different Visual Trees than the other controls so ParentOfType often cannot be used with them. On the other hand, these two methods are potentially slow - so you better avoid them.

  Kind regards,
  Petar Mladenov
  the Telerik team

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