event is raised when a row's Update button is clicked, but before the Grid View control updates the row.
Inside the Row Updating event u can code for updation ex: Protected Sub Grid View1_Row Updating(By Val sender As Object, By Val e As System. We first of all create a Stored Procedure that gets the Id of an employee as a parameter from the Grid View on whichever row the user clicked. In this event, first we get the datakey value that is the id of an employee of whichever row the user clicked and that id is passed as a parameter to the Stored Procedure. According to the above, in these three operations we use three events of the Grid View for each operation.Save all or press "Ctrl S" and hit "F5" to run the page, the page will look as in the following image: Click on "Edit the Grid View", it will display Textboxes in each cell as in the following image: Edit the value(s) here and click on the Update link, it will update all the data or to remove it click on the "Delete" link above the image shown.This enables you to provide an event-handling method that performs a custom routine, such as canceling the edit operation, whenever this event occurs.A Grid View Edit Event Args object is passed to the event-handling method, which enables you to determine the index of the current row and to indicate that the edit operation should be canceled.A common way to use these collections is to HTML-encode the values supplied by the user before they are stored in the data source.