public static DeleteContract GetDeleteContract()
{
if (del_contract == null)
{
del_contract = new DeleteContract();
}
del_contract.Activate();
return(del_contract);
}
private void Window_Closed(object sender, EventArgs e)
{
del_contract = null;
}
private void DeleteContract_Click(object sender, RoutedEventArgs e)
{
del_contract = DeleteContract.GetDeleteContract();
del_contract.Show();
}