当我将字符串作为输入参数发送时，如何获得成功消息？

问：

我正在发送一个字符串作为输入参数，我应该在邮递员集合中得到一个“SUCCESS”消息作为我的输出......

这是我的DAL。

 public class ResponseDAL
    {
        public static DataTable ResponseMessage(string Message)
        {
            DataTable dtMessage = new DataTable();
            try
            {
                string ConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
                using (SqlConnection myConnectionGroupData = new SqlConnection(ConnectionString))
                {
                    using (SqlCommand myCommandGroupData = new SqlCommand("", myConnectionGroupData))
                    {
                        myCommandGroupData.CommandType = CommandType.StoredProcedure;
                        myCommandGroupData.Parameters.AddWithValue("@Option", " ");
                        myCommandGroupData.Parameters.AddWithValue("@Message", Message );
                        myCommandGroupData.CommandTimeout = 0;
                        myConnectionGroupData.Open();

                        SqlDataAdapter sdaCategory = new SqlDataAdapter(myCommandGroupData);
                        sdaCategory.Fill(dtMessage);
                        myConnectionGroupData.Close();
                    }
                }
            }
            catch (Exception ex)
            {
                throw;
            }
            return dtMessage;
        }
    }

这是我的BAL。

    public class ResponseBAL
    {
        public static DataTable ResponseMessage(string Message)
        {
            DataTable dtMessage = new DataTable();
            try
            {
                dtMessage = ResponseDAL.ResponseMessage(Message);
            }
            catch (Exception ex)
            {
                throw;
            }
            return dtMessage;
        }
    }

这是我的控制器

    public class ResponseController : ApiController
    {
        #region "Response"
        [Route("api/Response/ResponseMessage")]

        [HttpPost]
        public DataTable BranchList([FromBody]dynamic Data)
        {
            string Message = Data.Message;
            DataTable dtMessage = new DataTable();
            try
            {
                dtMessage = ResponseBAL.ResponseMessage(Message);
            }
            catch (SqlException ex)
            {

            }
            return dtMessage;
        }
        #endregion
    }

我正在发送一个字符串作为输入参数，我应该在邮递员集合中得到一个“SUCCESS”消息作为我的输出......