从存储过程获取返回值 [英] Get return value from stored procedure

问题描述

我使用实体框架5与code第一种方法。我需要阅读从存储过程的返回值;我已经读输出参数和发送的输入参数，但我不知道如何读的返​​回值。

这可能吗？

下面是我用来调用存储过程code：

  VAR outParam =新的SqlParameter（）;
outParam.ParameterName =@StatusLog;
outParam.SqlDbType = SqlDbType.NVarChar;
outParam.Size = 4000;
outParam.Direction = ParameterDirection.Output;变量code =新的SqlParameter（）;
code.ParameterName =@ code;
code.Direction = ParameterDirection.Input;
code.SqlDbType = SqlDbType.VarChar;
code.Size = 20;
code.Value =123;VAR数据= _context.Database.SqlQuery＆LT;项目＆GT;（EXEC spItemData @ code，@StatusLog OUT，code，outParam）;VAR的结果= data.FirstOrDefault（）;
 

解决方案

我找到了！
可以读取与具有以这种方式被使用的输出参数的返回值：

  //定义一个新的输出参数
VAR回报code =新的SqlParameter（）;
返回code.ParameterName =@返回code;
返回code.SqlDbType = SqlDbType.Int;
返回code.Direction = ParameterDirection.Output;//分配返回code到新的输出参数，并把它传递给SP
VAR数据= _context.Database.SqlQuery＆LT;项目＆GT;（EXEC @返回code = spItemData @ code，@StatusLog OUT，返回code，code，outParam）;
 

I'm using Entity Framework 5 with the Code First approach. I need to read the return value from a stored procedure; I am already reading output parameters and sending input parameters, but I don't know how to read the return value.

Is it possible?

Here is the code that I use to call the stored procedure:

var outParam = new SqlParameter();
outParam.ParameterName = "@StatusLog";
outParam.SqlDbType = SqlDbType.NVarChar;
outParam.Size = 4000;
outParam.Direction = ParameterDirection.Output;

var code = new SqlParameter();
code.ParameterName = "@Code";
code.Direction = ParameterDirection.Input;
code.SqlDbType = SqlDbType.VarChar;
code.Size = 20;
code.Value = "123";

var data = _context.Database.SqlQuery<Item>("exec spItemData @Code, @StatusLog OUT", code, outParam);

var result = data.FirstOrDefault();

解决方案

I found it! I can read the return value with an output parameter that has to be used in this way:

// define a new output parameter
var returnCode = new SqlParameter();
returnCode.ParameterName = "@ReturnCode";
returnCode.SqlDbType = SqlDbType.Int;
returnCode.Direction = ParameterDirection.Output;

// assign the return code to the new output parameter and pass it to the sp
var data = _context.Database.SqlQuery<Item>("exec @ReturnCode = spItemData @Code, @StatusLog OUT", returnCode, code, outParam);

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