protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Calculator = new Calculator();
}
NumberInput.Focus();
}
protected void Handle_Enter(object sender, EventArgs e)
{
Decimal entry;
if (Decimal.TryParse(NumberInput.Text, out entry))
{
MainCalculator.Push(entry);
NumberInput.Text = "";
NumberInput.Focus();
}
ErrorMessage.Text = string.Empty;
}