<FieldRef Name="Opp"/><Value Type="Integer"><UserID Type="Integer"/></Value>

SPList wList = wWeb.Lists["Opportunités"];
        writer.Write(wList.ItemCount.ToString() + " items.<br/>");
        SPView wView = wList.Views["CRM_PRINCIPALE_ENCOURS_SIMPLE_2"];
        try
        {
            SPQuery wQ = new SPQuery(wView);

            DateTime wStart = DateTime.Now;
            SPListItemCollection wItems = wList.GetItems(wQ);
            Console.WriteLine(wItems.Count);
            DateTime wStop = DateTime.Now;
            writer.Write(wItems.Count.ToString() + " : " + (wStop - wStart).TotalMilliseconds.ToString("n0") + " ms for Query on view "+wView.Title+" <br/>");
        }
        catch { }