public static TransactionForm GetInstance(User user)
{
if (instance == null)
{
instance = new TransactionForm(user);
}
return(instance);
}
private void TransactionForm_FormClosed(object sender, FormClosedEventArgs e)
{
instance = null;
}
private void button1_Click(object sender, EventArgs e)
{
TransactionForm.GetInstance(user).Show(this);
TransactionForm.GetInstance(user).Focus();
}