/// <summary>
 /// 检查是否存在该记录
 /// </summary>
 /// <param name="prodname">险种名称</param>
 /// <param name="username">人员名称</param>
 /// <returns></returns>
 public static bool Exists(string prodname, string username)
 {
     return(LoginProdRateService.Exists(prodname, username));
 }