private void btnConvert_Click(object sender, EventArgs e)
{//This is the code for the "Convert!" button.
try
{
/*
* It first checks to see if the text that has been entered into the input text
* box can be parsed into an integer. If it succeeds, it is assumed that the
* user has put in these numbers to convert them to Roman numerals, and so it
* initializes the ArabicToRoman method of the NumberConversion class with the
* number they put in. Once it finishes, it puts the output in the output text box.
*/
if (int.TryParse(txtInput.Text, out int b))
{
string a = NumberConversion.ArabicToRoman(b);
txtOutput.Text = a.ToString();
}
else
{/*
* If the users input doesn't properly parse into an integer, then it's assumed
* that they are looking to convert Roman numerals to Arabic numbers, so it
* attempts the opposite. Due to the nature of the RomanToArabic class, input
* is protected from anything that isn't a Roman numeral.
*/
int a = NumberConversion.RomanToArabic(txtInput.Text);
txtOutput.Text = a.ToString();
}
ep1.Clear();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
ep1.SetError(txtInput, "The value you attempted to convert did not fit the formatting of either Arabic numbers or Roman numerals. ...well, at least those between 1 and 3999.");
}
}
private void ListTest_Load(object sender, EventArgs e)
{
try
{
for (int count = 1; count <= 3999; count++)
{
string a = count + " = " + NumberConversion.ArabicToRoman(count) + "." + Environment.NewLine;
lbOutput.Items.Add(a);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
