private void Btn2_Click_1(object sender, RoutedEventArgs e)
{
ClassSerialiaze.SerialiazeToXml <List <Zvit2> >(ref ListZvit2, "datazvit2.xml");
Zvitreport2 a = new Zvitreport2();
a.ShowDialog();
}
private void Button_Click_2(object sender, RoutedEventArgs e)
{
ClassSerialiaze.SerialiazeToXml <List <Zvit1> >(ref ListZvit1, "datazvit.xml");
ZvitReport1 a = new ZvitReport1();
a.ShowDialog();
}