When the FormView 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 FormView control, such as from a different control on the page.
The FormView control must be in insert mode when this method is called; otherwise, an HttpException 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.