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

 

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

C#

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

{

if(e.Label=="Syncfusion")

{

e.Cancel = false;

MessageBox.Show("Valid");

e.ContinueEditing = false;

}

else

{

// 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;

}

}

VB

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

MessageBox.Show("Valid")

e.ContinueEditing = False

Else

' 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

Article ID: Published Date: Last Revised Date: Platform: Control:
1322 04/30/2011 07/10/2014 Windows Forms TreeViewAdv
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