Question

我需要使用在switch case中为我的存储过程分配的变量，但我总是得到意想不到的结果。请帮助..任何回复都会很有帮助。谢谢。

private void CheckMessage()
        {
            string chk = null;
            ShortMessage l = new ShortMessage();
            string strCommand = "AT+CMGL=\"ALL\"";
            objShortMessageCollection = objclsSMS.ReadSMS(this.port, strCommand);
            foreach (ShortMessage msg in objShortMessageCollection)
            {

                l.Message = msg.Message;
                string[] splt = l.Message.Split('#');
                for (int i = 0; i < splt.Length; i++)
                {
                    string[] parts = splt[i].Split(':');
                    char prefix = Convert.ToChar(parts[0]);
                    string value = parts[1];

                    switch (prefix)
                    {
                        case 'T':
                            l.truck = value;
                            break;
                        case 'D':
                            l.driver = value;
                            break;
                        case 'R':
                            l.receiveby = value;
                            break;
                        case 'A':
                            l.arrivedate = value;
                            break;
                        case 'U':
                            l.unloaddate = value;
                            break;
                        case 'N':
                            l.deliverynote = value;
                            break;
                        case 'L':
                            l.deliverydate = value;
                            break;
                        case 'S':
                            l.deliverystatus = value;
                            break;
                        case 'M':
                            l.mac = value;
                            break;
                        case 'C':
                            l.msgcreatedate = value;
                            break;
                    }

                }
                chk = l.getINFO(l).Tables[0].Rows[0][0].ToString();

                if (chk == "1")
                {

                    this.AutomaticReply();
                    this.DeleteToSim();
                }
                else
                {

                    this.DeleteToSim();
                }

                l = null;
            }


        }
        #endregion

这是我的存储过程..

ALTER PROCEDURE [dbo].[Message_Check]
    @truck nvarchar(20),
    @driver nvarchar(20),
    @deliverynote int

AS
    BEGIN
         SELECT 1 FROM Truck trk, Driver drv, DeliveryNotes dnt
                           WHERE trk.Plate_Number = @truck
                             AND drv.DRIVER_ID = @driver
                             AND dnt.DNID = @deliverynote
                             AND dnt.Status = 'N'
    END

Answer 1

您的查询将输出1 .....总是

SELECT 1 FROM Truck trk, Driver drv, DeliveryNotes dnt
                           WHERE trk.Plate_Number = @truck
                             AND drv.DRIVER_ID = @driver
                             AND dnt.DNID = @deliverynote
                             AND dnt.Status = 'N'

应该是

SELECT Top 1 * FROM Truck trk, Driver drv, DeliveryNotes dnt
                           WHERE trk.Plate_Number = @truck
                             AND drv.DRIVER_ID = @driver
                             AND dnt.DNID = @deliverynote
                             AND dnt.Status = 'N'

Answer 2

一种可能性是你所看到的角色不是资本，或者你可能正在获得领先的空间。看看这样的事情是否有帮助：

char prefix = parts[0].Trim().ToUpper()[0];

如果仍有问题，请编辑原始帖子并添加ShortMessage类的结构

Answer 3

请通过检查传递给存储过程的值来使用断点和调试。值可能有额外的空格，例如“aa bb”使用 TrimEnd(' '); 函数修剪结束值，＆amp;请解析正确使用其数据类型（Int , Double , DateTime etc）。您正在阅读的短信和其他用途的短信。请检查呼叫是否为私人/公共，以便将其值发送到存储过程。

char prefix = Convert.ToChar(parts[0]);

使用

parts[0]=parts[0].ToUpper();
char prefix = Convert.ToChar(parts[0]);

继续尝试......

使用switch case分配变量

3 个答案: