How to create Constants in ASP.NET C#

 namespace ABC.Framework

{

    /// <summary>

    /// Class Constants.

    /// </summary>

    public static class Constants

    {

 public static readonly string PELINumber="PE/LI Number";

 public const string CaseStage_UICases = "UICases";

        public const string CaseStage_UTCases = "UTCases";

        public const string CaseStage_DTCases = "DTCases";

}