private void btnEq_Click(object sender, EventArgs e)
{
lblError.Text = "";
if (M != null)
{
if (M.B != null)
{
M.A = txtDisplay.Text; //populates first holder to do math. The secondary holder was populated by clicking a operator.
lblN.Text = lblN.Text + " " + txtDisplay.Text + " = "; // updates the math label at the top of the form
//txtDisplay.Text = M.nMath().ToString(); //class method to do the math and to updated the form textbox
Double xMath = M.nMath(Double.Parse(M.A), Double.Parse(M.B), M.Operation);
if (double.IsInfinity(xMath))
{
lblError.Text = "Cannot divide by zero";
txtDisplay.Text = xMath.ToString();
}
else
{
txtDisplay.Text = xMath.ToString();
}
M.B = null;
trackCelc = true;
}
}
}
