private void SignUpButton_Click(object sender, RoutedEventArgs e)
{
SingUp WindowProg = new SingUp();
WindowProg.Show();
this.Close();
}
private void Sing_up(object sender, EventArgs e)
{
Form SingUp = new SingUp(ref store);
SingUp.Left = this.Left;
SingUp.Top = this.Top;
SingUp.Show();
this.Hide();
}