如何从C#调用存储过程，并获取返回值？

Question

I created a stored procedure in SQL Server, and loaded into a.dbml , a database file in my Visual Studio project. The procedure is called storedprocedure1(System.String name, System.Int32 code) .

Now in my MVC controller (let's call it FooController ), I am writing a method to get the result from the stored procedure. How do I do that?

Database class:

namespace App.Repo.App_Data{
    [global::System.Data.Linq.Mapping.DatabaseAttribute(Name="Application")]
    public partial class APPDatacontext : System.Data.Linq.DataContext{ /* ... */}
}

Controller class

namespace App.Controllers{
    public class FooController : Controller{
        private string getResult(string name, int code){
            // call and get result from storedprocedure1
        }
    }
}

SQL Server

ALTER PROCEDURE storedprocedure1 (
    @name varchar(10),
    @code int
    @result varchar(50) OUTPUT
)
AS

    SELECT --blah blah blah

GO

Answer 1

You don't use RETURN to return values from a procedure. The RETURN value is an integer and is designed to provide a value indicating the status of the execution. If you want values back from your procedures you should use OUTPUT variables.

https://msdn.microsoft.com/en-us/library/ms378108%28v=sql.110%29.aspx