private void ButtonAllClear_Click(object sender, EventArgs e)
{
ResultsDisplayBox.Clear();
ResultsDisplayBox.Text = "0";
ResultValue = 0;
ChainOperationLabel.Text = "";
}
private void numberButton_Click(object sender, EventArgs e)
{
Button CalcNumberButton = (Button)sender;
if ((ResultsDisplayBox.Text == "0"))
{
ResultsDisplayBox.Clear();
}
// isOperationPerformed = false;
ResultsDisplayBox.Text += CalcNumberButton.Text;
ChainOperationLabel.Text += CalcNumberButton.Text;
}