public static string GetUserId(string employeeId) { BuildQuery qb = new BuildQuery(ConfigurationManager.ConnectionStrings["DefaultConnection"].ToString()); qb.SetInParam("@EmployeeId", Guid.Parse(employeeId), SqlDbType.UniqueIdentifier); string id = qb.ExecuteScalar("spGetUserId", CommandType.StoredProcedure).ToString(); return(id); }