onupdatecommand event is not getting called.

Question

Dear friends, I have following problem. I am using datagrid oneditcommand, onupdatecommand events to edit records in datagrid. Language is C#. First event onedit command is working fine but, when user clicks on revise button to update the selected record, onupdatecommand event is not getting called. Can anybody tell me what could the reason? Please help. Regards Amol