Question

I have a stored Procedure that do some operation and return 1 or 0 as below

CREATE PROCEDURE dbo.UserCheckUsername11
(
    @Username nvarchar(50)
)
AS
BEGIN
SET NOCOUNT ON;

IF Exists(SELECT UserID FROM User WHERE username =@Username) 
    return 1
ELSE
    return 0
END

and in C# i want to get this returned value i try ExcuteScalar but it didn’t return any value ( i know if i replace return 0 with Select 0 ExcuteScalar will catach it .. but is it any way that allow me to get returned value with replace return with select ?

NOTE : I don’t want to user stored procedure output parameter also

Answer 1

In essence you have to define a parameter with “direction” return value.

You can find some examples here: Using ADO.NET with SQL Server and here: Get the Return Value from an SQL Stored Procedure.

Here comes the relevant part from the first link cited:

To get the value of a RETURN
statement, you need to do the
following:

// add a new parameter, with any name we want - its for our own
// use only
SqlParameter sqlParam = com.Parameters.Add("@ReturnValue", SqlDbType.Int);
// set the direction flag so that it will be filled with the return value
myParm.Direction = ParameterDirection.ReturnValue;

Then, after the stored procedure has
been executed,

int returnValue = (int)com.Parameters["@ReturnValue"].Value

will retrieve the value that was set.