Drag and drop NullReferenceException on the first drag and drop

2 posts, 0 answers
  1. Eylon Ohevya
    Eylon Ohevya avatar
    1 posts
    Member since:
    Apr 2010

    Posted 17 Jan 2011 Link to this post

    Good evening,
    I am implementing a drag and drop between two grids, which works fine and drags and drops great.
    however, when I do the first drag and drop I get this error:
    System.NullReferenceException occurred
      Message=Object reference not set to an instance of an object.
      Source=Telerik.Windows.Controls
      StackTrace:
           at Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.StartDragging() in c:\Builds\WPF_Scrum\Release_WPF_2010_Q2_SP1\Sources\Development\Core\Controls\DragDrop\RadDragAndDropManager.cs:line 1083
      InnerException: 

    The error occurs once and when I continue running the code the next drag and drops works great.
    I am doing the drag and drops from a dialog window invoked from within the software.
    I am using Q2 SP1 release.
    Please help,
    Eylon


  2. Tsvyatko
    Admin
    Tsvyatko avatar
    832 posts

    Posted 17 Jan 2011 Link to this post

    Hi Eylon Ohevya,

    Could you please check more recent version (our latest internal build or Q3 SP1), since we had similar problem with the release you are using.

    Regards,
    Tsvyatko
    the Telerik team
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