private string Item_Alumno_GetByCurso() { var instance = CustomerFramework.Load("AMPA"); string res = "[]"; var parameters = new List <SqlParameter> { DataParameter.Input("@CursoId", Convert.ToInt64(this.Request.QueryString["CursoId"])) }; try { res = SqlStream.GetSqlStream("Item_Alumno_GetByCurso", new ReadOnlyCollection <SqlParameter>(parameters), instance.Config.ConnectionString); } catch (Exception ex) { ExceptionManager.Trace(ex, "Item_Alumno_GetByCurso(" + Convert.ToInt64(this.Request.QueryString["CursoId"]) + ")"); } return(res); }