Home / Community & Support / Developer Productivity Tools Forums / WPF > TreeView > TreeView Edited event NewValue and OldValue

• Lauren Nickerson

  Posted on Dec 23, 2009 (permalink)

  Hi, so I'm in this event I need the old value to do some evaluation, but instead, I get the NewValue on both objects:

  
  

  private void treeViewExperimentExplorer_Edited(object sender, RadTreeViewItemEditedEventArgs e)

  {

  string newName = e.NewValue.ToString();

  string oldName = e.OldValue.ToString();

  }

  
  

  In there both newName and oldName have the new value. How can I get the previous value in there?

  
  

  Thanks!

  Reply

• Miroslav Miroslav

  Posted on Dec 28, 2009 (permalink)

  Hi Lauren Nickerson,
  
  Unfortunately when the TreeView uses an ItemEditTemplate (i.e. it is bound) it will not populate these properties. They contain just the data item that the TreeView is bound to.
  
  We are looking to enable these properties for the Q1 release of the controls when the TreeView is bound.
  
  In the meantime I can suggest storing the value that you need in a field when editing starts and then refering to it if you need to when editing ends.
  
  Regards,
  Miroslav
  the Telerik team

  
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  Reply

• Lauren Nickerson

  Posted on Dec 28, 2009 (permalink)

  That was plan B. Thanks!

  Reply

• Menny

  Posted on Jan 29, 2012 (permalink)

  its 2012 now and this still happens

  Reply

• Kiril Stanoev Kiril Stanoev

  Posted on Feb 1, 2012 (permalink)

  Hello Menny,

  The previously mentioned behavior is by design. Our suggestion is to use the PreviewEdited and Edited events to distinguish between the new and old values. Please take a look at the attached project for further reference.

  Greetings,
  Kiril Stanoev
  the Telerik team

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  Attached files

  • 269235.zip

  Reply

• Menny

  Posted on Feb 5, 2012 (permalink)

  yeh, figured it out
  

  Reply

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