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Syncfusion Feedback

How to keep the user from leaving a node in edit mode until they’ve entered a valid node name?

Platform: WinForms |
Control: TreeViewAdv |
Published Date: April 30, 2011 |
Last Revised Date: July 10, 2014


This can be done by handling the TreeViewAdv's NodeEditorValidating event as shown below :


private void treeViewAdv1_NodeEditorValidating_1(object sender, Syncfusion.Windows.Forms.Tools.TreeNodeAdvCancelableEditEventArgs e)




e.Cancel = false;


e.ContinueEditing = false;




// Cancel the label edit action, inform the user, and place the node in edit mode again

e.Cancel = true;

MessageBox.Show("Invalid name");

// To end editing mode, do this:

e.ContinueEditing = true;




Private Sub treeViewAdv1_NodeEditorValidating_1(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Tools.TreeNodeAdvCancelableEditEventArgs)

If e.Label="Syncfusion" Then

e.Cancel = False


e.ContinueEditing = False


' Cancel the label edit action, inform the user, and place the node in edit mode again.

e.Cancel = true;

MessageBox.Show("Invalid name")

' To end editing mode, do this:

e.ContinueEditing = True

End If

End Sub

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