I'm currently using the below which adds Filters using AND, how could I use OR
foreach (string filter in _rptFilters) { Telerik.Reporting.Filter newfilter = new Telerik.Reporting.Filter(); newfilter.Expression = "= StringToUpper(Fields." + filter + ")" ; newfilter.Operator = Telerik.Reporting.FilterOperator.Equal; newfilter.Value = filter.Substring(filter.IndexOf("_") + 1).ToUpper(); table1.Filters.Add(newfilter); }