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 prevent the expansion of the collapsed nodes when it is been double clicked ?

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

 

This can be done by handling BeforeExpand Event handler. Here after getting the MouseClicked Point ,if the node is not equal to null the node's TextBounds property is checked and then e.Cancel is set to true.

The following code will ensure that the node will expand only when clicked on the Node's Expandable button ( that is, the "+" box on the left of the node) and not when clicked on the TreeNodeAdv's text.

C#

private void treeViewAdv1_BeforeExpand(object sender, Syncfusion.Windows.Forms.Tools.TreeViewAdvCancelableNodeEventArgs e)

{

Point p =this.treeViewAdv1.PointToClient(Control.MousePosition);

TreeNodeAdv node=this.treeViewAdv1.GetNodeAtPoint(p,true);

if(node!=null)

{

if(node.TextBounds.Contains(p))

{

e.Cancel=true;

}

}

}

VB

Private Sub treeViewAdv1_BeforeExpand(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Tools.TreeViewAdvCancelableNodeEventArgs)

Dim p As Point =Me.treeViewAdv1.PointToClient(Control.MousePosition)

Dim node As TreeNodeAdv=Me.treeViewAdv1.GetNodeAtPoint(p,True)

If Not node Is Nothing Then

If node.TextBounds.Contains(p) Then

e.Cancel=True

End If

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