By default, the WinGrid™ uses the "AND" logical operator to combine filters across columns. Therefore, if a row fails column filters of at least one column, then the row is considered to be filtered out. You can alter this behavior and use the "OR" logical operator to combine filters across columns by setting the LogicalOperator property of the ColumnFiltersCollection object. This way a row has to fail all the column filters in order for it to be considered filtered out. If it passes at least one column filter then it will be considered to be not filtered out.