richTextBox1.AppendText("Path.VolumeSeparatorChar:" + Path.VolumeSeparatorChar.ToString() + "\r\n" + "Path.PathSeparator:" + Path.PathSeparator + "\r\n" + "Path.DirectorySeparatorChar:" + Path.DirectorySeparatorChar + "\r\n" + "Path.AltDirectorySeparatorChar:" + Path.AltDirectorySeparatorChar);