Stoping a FormView insert and restarting it later
===

Is there any way to stop the insert command of a Form View that uses a SqlDataSource? 
What I need is the confirmation from the user that he really need to insert the data in the database, if he choose yes then the insert needs to continue, else it needs to stop. I've tried something like this, but can't think of a way to continue the insert:

    protected void FormView1_ItemInserting(object sender, FormViewInsertEventArgs e)
    {
        PanelForm.Visible = false;
        PanelTermos.Visible = true;
        e.Cancel = true;
        //Verify if the user clicked a confirmation button
        //Continue the insert
    }

Also I don't know how to verify wich button the user clicked