I have a table with fields "from_time" and "to_time" which accepts entries "time" type to display hours. Values are coming into the table through dropdown list of general hours including a value "closed". I am displaying all the data through cgridview. Now when someone selects "closed" from the dropdown and save the data, "closed" is saved as "00:00:00". How can i display "closed" when i am displaying the data through cgridview?