ASP.Net - How to disable days in Calendar, change color of disabled days, strike out

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protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)

{  if (e.Day.Date < DateTime.Now.Date)

{                  
   e.Day.IsSelectable = false;

   e.Cell.ForeColor = System.Drawing.Color.Red;

   e.Cell.Font.Strikeout = true;


}

}