how to set null values for sharepoint DateTime column

If you would like to set the null value for sharepoint datetime column using object model then one update for u.
1. u can't update the sharepoint datetime field by
item["EndDate"] = string.Empty;
item["EndDate"] = null
this both wil not work.
this has been fixed in sharepoint SP1. and if you are using sharepoint SP1 then u can use the null value to set the datetime field value as blank.
item["EndDate"] = null ( only MOSS SP1 or later)
Tx.
Labhesh Shrimali