Hour glass

public class HourGlass : IDisposable
{
    public HourGlass()
    {
        Enabled = true;
    }
    public Boolean Enabled
    {
 
        get { return Application.UseWaitCursor; }
        set
        {
            if (value != Application.UseWaitCursor)
            {
                Application.UseWaitCursor = value;
                Form f = Form.ActiveForm;
                if (f != null && f.Handle != null)
                {
                    //Send WM_SETCURSOR message
                    SendMessage(f.Handle, 0x20, f.Handle, (IntPtr)1);
                }
            }
        }
    }
    [System.Runtime.InteropServices.DllImport("user32.dll")]
    private static extern IntPtr SendMessage(IntPtr hWind,int msg,IntPtr wp, IntPtr lp);
 
    #region IDisposable Members
 
    void IDisposable.Dispose()
    {
        Enabled = false;
    }
 
    #endregion
}
 
//Usage
using (new HourGlass())
{
  //time consuming code goes here
}