FormViewInsertEventArgs::CommandArgument Property
Gets the command argument for the insert operation passed to the FormView control.
Assembly: System.Web (in System.Web.dll)
When you create an Insert button for one of the templates in a FormView control, you can optionally specify a command argument for the button by using the CommandArgument property. The command argument usually contains any extra information you want to accompany the insert command, such the value for the key field. The CommandArgument property is provided as a convenient way to determine the value of the Insert button's command argument.
Available since 2.0