How to get only letters from a string in C#?
<p>I have a string and need the letters from said string.</p>

<pre><code>string s = "EMA123_33";    // I need "EMA"
string s = "EMADRR123_33"; // I need "EMADRR"
</code></pre>

<p>I am using C# in Visual Studio 2008.</p>
