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.

event is raised when a row's Edit button is clicked, but before the Grid View control enters edit mode.

I suspect this is because I am using the GUI and this will require some code per coloumn?

Error[Http Exception (0x80004005): The Grid View 'Grid View1' fired event Row Editing which wasn't handled.] System.

event is raised when a row's Update button is clicked, but before the Grid View control updates the row.

This enables you to provide an event-handling method that performs a custom routine, such as canceling the update operation, whenever this event occurs.

As our code does not handle those events hence they throw an exception.

The Grid View is associated with the On Row Command event.