manipulating indexes
<p>When my program runs it outputs the following error:</p>

<p>A first chance exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll</p>

<p>The thread 'vshost.RunParkingWindow' (0x11d4) has exited with code 0 (0x0).</p>

<p>The thread '' (0xdbc) has exited with code 0 (0x0).</p>

<p>The program '[2868] Filereader m 15062012.vshost.exe: Managed (v4.0.30319)' has exited with code 0 (0x0).</p>
