protected void GridView1_Updated(object sender, 
    GridViewUpdatedEventArgs e)
 {
        Label11.Text = "Dati modificati correttamente! ";
       }
    
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    AccessDataSource1.UpdateParameters["tipo"].DefaultValue = GridView1.Rows[e.RowIndex].Cells[2].Text;
}