public static AddContract GetAddContract()
{
if (add_contract == null)
{
add_contract = new AddContract();
}
add_contract.Activate();
return(add_contract);
}
private void Window_Closed(object sender, EventArgs e)
{
add_contract = null;
}
//Договори
private void AddContract_Click(object sender, RoutedEventArgs e)
{
add_contract = AddContract.GetAddContract();
add_contract.Show();
}