C# 2005 : How do I Disable icon in Alt+Tab list

[CyberSoftHari]

I did below and it is not showing in task bar but when I press Alt + Tab then it is showing in that list. How to disable there.

ShowInTaskbar = false; 

[Plater]

if you .Hide() your window (remember to provide a way to show it again) it will not show up in alt+tab.

I think the other alternative is to use some win32_api

[CyberSoftHari]

Thanks, and i got the solution using user32.dll like

 
'Decleration part
       #region Remove from Alt Tab
  [DllImport("user32.dll")]
  public static extern int SetWindowLong(IntPtr window, int index, int value);
  [DllImport("user32.dll")]
  public static extern int GetWindowLong(IntPtr window, int index);
  const int GWL_EXSTYLE = -20;
  const int WS_EX_TOOLWINDOW = 0x00000080;
  const int WS_EX_APPWINDOW = 0x00040000;
  #endregion

calling after InitializeComponent, or form load events

  int windowStyle = GetWindowLong(this.Handle, GWL_EXSTYLE);
  SetWindowLong(this.Handle, GWL_EXSTYLE, windowStyle | TOOLWINDOW);

[Plater]

Does that cause any changes to your forms layout or borderstyle?

[CyberSoftHari]

Does that cause any changes to your forms layout or borderstyle?

No, everything usual.