C# standard class (enumeration?) for Top, Bottom, Left, Right
<p>Is there a standard c# class that defines a notional Left, Right, Top and Bottom? </p>

<p>Should I just use my own?</p>

<pre><code>enum controlAlignment
{
    left = 1,
    top,
    right,
    bottom,
    none = 0
}
</code></pre>
