calling stored procedure with linq

I am new to Linq server开发者_开发百科. I have a stored procedure in my databse that retuens count number.

select COUNT(*) from tbl_WorkerUsers 
        where WorkerCode=@Wcode

when I run it directly in my database it returns 1.

    exec checkWorkerCodeAvailibility 100000312

but when I run it in c# code it always returns null.

WorkerDataContext Wkc = new WorkerDataContext();
        int? result = Wkc.checkWorkerCodeAvailibility(Int32.Parse(Wcode)).Single().Column1;

what's wrong?

Define your Stored Procedure like this:

CREATE PROCEDURE [dbo].[checkWorkerCodeAvailibility] 
    @Wcode int = 0
AS
BEGIN
    SET NOCOUNT ON;

    DECLARE @Result INT
    SELECT @Result = COUNT(*) FROM tbl_WorkerUsers WHERE WorkerCode=@Wcode
    RETURN @Result
END

You can then access this using the following code:

int result = db.checkWorkerCodeAvailibility(Int32.Parse(WCode));