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kdr35
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Root Node
Aug 16th, 2010 at 7:44am
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I need to set one node as root before graph load so that node must be undeleted , How I can do undeleted one node.

I try to do in NodeDelete event as look node id but it doesnt work ı can control node id but I cant stop node delete event so node is deleted.
  
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Stoyo
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Re: Root Node
Reply #1 - Aug 16th, 2010 at 8:20am
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You can prevent the user from deleting a node by handling the NodeDeleting event. However, it is not raised when deleting nodes by code, or when loading files. You will have to create a new root node after calling LoadFromFile or ClearAll.

I hope that helps,
Stoyan
  
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kdr35
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Re: Root Node
Reply #2 - Aug 16th, 2010 at 8:29am
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I dont need to delete node via code , i use only interface to delete node.
I tried to prevent in NodeDeleting Event ;

private void diagram1_NodeDeleting(object sender, NodeValidationEventArgs e)
{
if (e.Node.Id.ToString() == "0")// root node id
return;
}

But Node is deleted how i prevent to delete node in NodeDeleting Event .
  
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Stoyo
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Re: Root Node
Reply #3 - Aug 16th, 2010 at 9:12am
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A 'return' is not enough. You should set the Cancel property of the event-args object.

I hope that helps,
Stoyan
  
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kdr35
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Re: Root Node
Reply #4 - Aug 16th, 2010 at 10:16am
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thanks
  
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