//Save File
SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "Txt Files (*.txt)|*.txt|Lua Files (*.lua)|*.lua|All Files (*.*)|*.*";
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                Stream s = sfd.OpenFile();
                StreamWriter sw = new StreamWriter(s);
                sw.Write(fastColoredTextBox1.Text);
                sw.Close();
                fastColoredTextBox1.Clear();
            }
        }
    }