Deleting a Leaf Node Throwing Exception Urgent Please

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UltraTree

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govind posted over 16 years ago

All,

We are using valid Infragistics License version 6.2. Let me explain my problem.

When I am deleting a Node which is Leaf and there are no siblings for that node also. Assume that it is the only node at the end. Basically when creating the node I alert him if it is a duplicate and provide him with a message box. If the clicks no , I am removing the leaf node in the following event dynamically.

treeControlt_AfterLabelEdit

trePageContent.Nodes.Remove(e.TreeNode)

I placed the complete event in the Try Catch Block but it doesn't throw any exception but when the method returns it is throwing the following exception.

This is happening only when there is only one node at the end. Other than that its workig fine in all other places.

I am placed breakpoints in all the events of the TreeView but its not hitting any event after deleting the node. Please get back to me as it is really a urgent issue.

Message="Object reference not set to an instance of an object."
Source="Infragistics2.Win.UltraWinTree.v6.2"
StackTrace:
       at Infragistics.Win.UltraWinTree.UltraTree.EndEdit(UltraTreeNode node, Boolean cancel, Boolean callExitEditMode)
       at Infragistics.Win.UltraWinTree.UltraTree.EndEdit(UltraTreeNode node, Boolean cancel)
       at Infragistics.Win.UltraWinTree.UltraTreeNode.EndEdit(Boolean cancel)
       at Infragistics.Win.UltraWinTree.UltraTree.PerformAction(UltraTreeAction actionCode, Boolean shift, Boolean control)
       at Infragistics.Win.UltraWinTree.UltraTree.PerformKeyAction(Enum actionCode, Boolean shiftKeyDown, Boolean ctlKeyDown)
       at Infragistics.Win.UltraWinTree.UltraTreeUIElement.PerformKeyAction(Enum actionCode, Boolean shiftKeyDown, Boolean ctlKeyDown)
       at Infragistics.Win.ControlUIElementBase.ProcessKeyDown(Object sender, KeyEventArgs e)
       at Infragistics.Win.UltraControlBase.OnKeyDown(KeyEventArgs e)
       at Infragistics.Win.UltraWinTree.UltraTree.OnKeyDown(KeyEventArgs e)
       at Infragistics.Win.UltraWinTree.UltraTree.Infragistics.Win.ISilentTextBoxOwner.OnKeyDown(KeyEventArgs e)
       at Infragistics.Win.UltraWinTree.LabelEditNodeBase.OnKeyDown(KeyEventArgs e)
       at Infragistics.Win.UltraWinTree.LabelEditNode.ProcessKeyMessage(Message& msg)
       at System.Windows.Forms.Control.WmKeyChar(Message& m)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
       at System.Windows.Forms.TextBox.WndProc(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

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Offline Mike Saltzman posted over 16 years ago

This looks like a bug in the control to me. The control is probably trying to access the node after the event has completed without accounting for the fact that it may have been removed.
You should Submit an incident to Infragistics Developer Support so they can check it out.
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Amit posted over 16 years ago in reply to Mike Saltzman

Thank you.

I raised a help ticket as you suggested.
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Offline Mike Saltzman posted over 16 years ago in reply to Amit

I'm pretty sure that v6.2 is no longer being supported. You might want to try downloading the latest Hot Fix for 6.2 and see if that helps. If not, you might want to download a trial version of v8.2 and see if the problem has been fixed. You can have both versions installed at the same time and they will not affect each other.
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