how to cancel a tab page change

[NikoTanghe]

How to cancel a tabcontrol selectedindex event? I can't find a proper event to do this. in 2.0 framework, some events were added: Deselected : Occurs when a tab is deselected. Deselecting : Occurs before a tab is deselected, enabling a handler to cancel the tab change. but how is it possible in .net < 2.0 :confused: thanks in advance, Niko

[Curtis Schlak]

You could hack the change by creating your own derived class from TabControl and just monitor the SelectedIndexChanged event. The following code will prevent a user from selecting the third tab in the MyTabControl class.

using System;
using System.Windows.Forms;

namespace WindowsApplication1
{
public class MyTabControl : TabControl
{
private int lastSelectedIndex = 0;
public MyTabControl() : base()
{
lastSelectedIndex = this.SelectedIndex;
this.SelectedIndexChanged +=
new EventHandler( SelectedIndexChanged );
}

private void SelectedIndexChanged( object sender, EventArgs e )
{
  // Prevent someone from choosing TabPage number 3.
  if( this.SelectedIndex == 2 )
  {
    this.SelectedIndex = lastSelectedIndex;
  }
  else
  {
    lastSelectedIndex = this.SelectedIndex;
  }
}

}
}

"we must lose precision to make significant statements about complex systems." -deKorvin on uncertainty