WhereAll() not work with Sharepoint Client Object Model

Dec 9, 2016 at 2:13 AM
Hi all,

I build dynamic query like bellow, but there is an error "Entry point was not found."
anyone help me, thanks.
var MainExpr = new List<Expression<Func<ListItem, bool>>>();

                MainExpr.Add(x => ((string)x["ChucDanh"]).Contains("thai"));
                MainExpr.Add(x => x["DonVi"] == (DataTypes.LookupId)"1");
            string camle=Camlex.Query().WhereAll(MainExpr).ToString();