Question

CREATE PROCEDURE [dbo].[proc1]
(
    @tbl1   varchar(30),
    @var2   varchar(7000)
)
AS
BEGIN
    DECLARE @sql VARCHAR(8000)


    BEGIN
        SET @sql = 'INSERT INTO ' + @tbl1 + '(column) VALUES (''' + @var2 + ''')'

        EXEC (@sql)

        RETURN CONVERT(int, NEXT_IDENTITY(@tbl1))
    END
END

C# Method:

//create connection
using (AseConnection cn = new AseConnection(connectionString)) {
    AseCommand cmd = new AseCommand();

    AseParameter[] paras = new AseParameter[]{
        new AseParameter("@tbl1", AseDbType.VarChar, 30), 
        new AseParameter("@var1", AseDbType.VarChar, 7000),
        new AseParameter("@RetValue",AseDbType.Integer) };
    // Add all the parameters to command object
    foreach(AseParameter p in  paras) {
        cmd.Parameters.Add(p);
    }

    //finally, execute the command.
    return cmd.ExecuteNonQuery();
}

However, the third parameter is always empty. If I execute procedure directly in Sybase client, it gives me correct value.
Does anyone have good suggestion how to solve this issue?

Answer 1

Declare the third parameter as

AseParameter retParam = new AseParameter("@RetValue",AseDbType.Integer);
retParam.Direction = ParameterDirection.ReturnValue;

Also, select the identity with

RETURN @@identity