When the DetailsView control is in insert mode, use the InsertItem method to programmatically insert the current record in the data source. This method is commonly used when you need to insert the current record from outside of the DetailsView control, such as from a different control on the page.
The DetailsView control must be in insert mode when this method is called; otherwise, an HttpException exception is thrown.
To specify whether page validation is performed before the insert operation, use the causesValidation parameter. Calling this method also raises the ItemInserted and ItemInserting events.