public void GotoLine()
{
FastColoredTextBoxNS.GoToForm _gotoForm = new FastColoredTextBoxNS.GoToForm();
_gotoForm.SelectedLineNumber = CurrentLineNumber();
_gotoForm.TotalLineCount = rtf.Lines.Length;
DialogResult _result = _gotoForm.ShowDialog();
if (_result == DialogResult.OK)
{
GotoLine(_gotoForm.SelectedLineNumber);
}
}