public static void SelectText(this TextBoxBase self, Range range)
{
self.SelectionStart = range.Begin;
self.SelectionLength = range.Length;
}
public static void SelectAndApply(this RichTextBox self, Range r, Proc p)
{
Range old = SelectedRange(self);
try
{
SelectText(self, r);
p();
}
finally
{
SelectText(self, old);
}
}
public static void ColorText(this RichTextBox self, Range r, Color c)
{
self.SelectAndApply(r, () => { self.SelectionColor = c; });
}
public static Match MatchWithin(this string self, Regex regex, Range r)
{
return regex.Match(self.Substring(r));
}
public static String Substring(this String self, Range range)
{
return self.Substring(range.Begin, range.Length);
}
public static string GetText(this TextBoxBase self, Range r)
{
return self.Text.Substring(r);
}
public static void SetTextColor(this RichTextBox self, Color c, Range r)
{
SelectAndApply(self, r, () => self.SelectionColor = c);
}