TreeViewAdv Exception with CollapseAll()

[Administrator]

I am trying to do a selection on demand method, in which a node is sought by its tag number through a combobox and a button triggers the method. Here''s the code:

private void button1_Click(object sender, System.EventArgs e)
{
this.treeViewAdv1.CollapseAll( );
TreeNodeAdv tmp = this.treeViewAdv1.FindNode(this.comboBox1.Text);
this.treeViewAdv1.SelectedNode = tmp;
this.treeViewAdv1.ExtendSelectionTo(tmp);
}

It works fine as long as I don''t select a leaf node by clicking on the button.

It throws:
An unhandled exception of type ''System.NullReferenceException'' occurred in syncfusion.tools.windows.dll

Regards,

Tony

[Administrator]

Hi Tony, I have created a sample that has the same basic functionality as the situation you describe. I was unable to reproduce the problem. Could you take a look at it and let me know if you still see the problem? Please be aware that this sample was created in our soon to be released v3.3.0.0 and will not immediately compile in older versions. To make it compile, please remove the ImagePadding code from InitializeComponent(). Regards, Gregory Austin Syncfusion Inc.