void updateMatches(int increment)
{
matches = FindAndReplace.Find(textBox.Text, txtFindText.Text, chkMatchCase.Checked, chkWholeWordsOnly.Checked);
if (increment != 1 && increment != 0 && increment != -1)
{
throw (new ArgumentException());
}
index += increment;
position = matches[index];
if (matches.Count == 0)
{
lblMatchesFound.Text = "No matches found.";
}
else if (matches.Count == 1)
{
lblMatchesFound.Text = "1 match found.";
}
else
{
lblMatchesFound.Text = matches.Count + " matches found.";
}
}
