| protected OnBeforeCollapse ( System.Windows.Forms.TreeViewCancelEventArgs e ) : void | ||
| e | System.Windows.Forms.TreeViewCancelEventArgs | An TreeViewCancelEventArgs that contains the event data. |
| return | void | |
protected virtual void OnBeforeCollapse(TreeViewCancelEventArgs e)
{
if (BeforeCollapse != null)
BeforeCollapse(this, e);
}