entity framework - Database.SqlQuery calling stored procedure that has multiple output parameters

Question

I have a stored procedure like below which takes 1 input parameter ( Name ) and returns 2 output parameters( EmployeeId and Salary). Our stored procedure will insert Name into Employee table and give us back EmployeeId and Salary.

CREATE PROCEDURE dbo.insertemployee
@iName varchar(500),
@OEmployeeId int OUTPUT,  
@OSalary Money OUTPUT

We are using EF Code First approach. I am able to insert records into employee table and cannot find how I can access my two output parameters. I know that I need to use like below. Can anybody tell me what must be Result. According to MSDN, it can be a class that has column names as properties. But my case is that we are not returning columns of my table but we are using two output parameters and I need know how to access those two output parameters @OEmployeeId and @OSalary.

context.Database.SqlQuery<Result>(" exec dbo.insertemployee....);

public class Result
{
   // what properties I must give here       
}

Answer 1

The method you are trying to use only works for results of a query. It can't put the values of the output parameters into a new object for you automatically.

You have to create the parameters explicitly and read their values after the stored procedure has been run.

So if you have a stored procedure like this:

CREATE PROCEDURE dbo.insertemployee
(
    @iName varchar(500),
    @OEmployeeId int OUTPUT,  
    @OSalary Money OUTPUT
)
AS
BEGIN
    SELECT @OEmployeeId = 1337;
    SELECT @OSalary = 1000;
END

... you can execute it and get the results of the parameters like this:

using (var ctx = new Context())
{
    var nameParam = new SqlParameter("iName", "TestName");

    var employeeIdParam = new SqlParameter("OEmployeeId", SqlDbType.Int) 
    { 
        Direction = System.Data.ParameterDirection.Output 
    };

    var salaryParam = new SqlParameter("OSalary", SqlDbType.Money) 
    { 
        Direction = System.Data.ParameterDirection.Output 
    };

    ctx.Database.ExecuteSqlCommand(
        "insertemployee @iName, @OEmployeeId out, @OSalary out", 
        nameParam, employeeIdParam, salaryParam);

    var employeeId = (int)employeeIdParam.Value;
    var salary = (decimal)salaryParam.Value;
}