/// <summary>
 /// Add user module.
 /// </summary>
 /// <param name="usermodule"></param>
 /// <returns>Object of UserModuleInfo class.</returns>
 public static string AddUserModule(UserModuleInfo usermodule)
 {
     try
     {
         ModuleDataProvider mod = new ModuleDataProvider();
         return(mod.AddUserModule(usermodule));
     }
     catch (Exception)
     {
         
         throw;
     }
 }