We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. (Last updated on: November 16, 2018).
Unfortunately, activation email could not send to your email. Please try again.
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 :

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

2X faster development

The ultimate WinForms UI toolkit to boost your development speed.
ADD COMMENT
You must log in to leave a comment

Please sign in to access our KB

This page will automatically be redirected to the sign-in page in 10 seconds.

Up arrow icon

Warning Icon You are using an outdated version of Internet Explorer that may not display all features of this and other websites. Upgrade to Internet Explorer 8 or newer for a better experience.Close Icon