如何在实体框架中检查存储过程的返回值

Question

I have a stored procedure call but i want to get the return value of the stored procedure. Return type is integer. Following the code where I am calling the stored procedure

 else if(ReportName=="LandMarkInOutReport")
        {
          _DBContext.LandMarkInOutReport(report.ReportParameters.StartDate, report.ReportParameters.EndDate, Convert.ToInt64(paramArr1[3]), Convert.ToInt32(paramArr1[9]), Convert.ToInt32(paramArr1[11]), paramArr1[5], paramArr1[7]);     
        }

So please guide me how can I get the return value and also that is it the correct way to call stored procedure in entity framework?

Answer 1

Database First

First, you have to add your stored procedure to the .edmx file. If you have a context variable _DBContext and the stored procedure is called LandMarkInOutReport , you can execute it like this:

LandMarkInOutReport_Result returnValue = _DBContext.LandMarkInOutReport(report.ReportParameters.StartDate, report.ReportParameters.EndDate, Convert.ToInt64(paramArr1[3]), Convert.ToInt32(paramArr1[9]), Convert.ToInt32(paramArr1[11]), paramArr1[5], paramArr1[7]).FirstOrDefault();

The stored procedure call without .FirstOrDefault() isn't executed on the database.

Now you can use the returnValue to call the correct variable eg.: returnValue.ReturnVariableName .

Code First

You can call the stored procedure with .SqlQuery<> :

int returnValue = _DBContext.SqlQuery<int>("LandMarkInOutReport @StartDate, @EndDate, @param3, @param4, @param5, @param6, @param7", 
                  new SqlParameter("StartDate", report.ReportParameters.StartDate), 
                  new SqlParameter("EndDate", report.ReportParameters.EndDate), 
                  new SqlParameter("param3", Convert.ToInt64(paramArr1[3])), 
                  new SqlParameter("param4", Convert.ToInt32(paramArr1[9])), 
                  new SqlParameter("param5", Convert.ToInt32(paramArr1[11])), 
                  new SqlParameter("param6", paramArr1[5]), 
                  new SqlParameter("param7", paramArr1[7])).FirstOrDefault();