Inserting a comma after each char in c#
<p>I need a way to insert a comma after every character in a string. So for example, if i have the string of letters</p>

<pre><code>"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
</code></pre>

<p>I need to make it so there is a comma after every letter from A, to Z,
I would like to keep the string as it is and not convert it to a char array or something like that. I dont know if thats possible but its just something id like to avoid.</p>

<p>How can i do this?
End result should be this:</p>

<pre><code>"A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,"
</code></pre>

<p>Thanks</p>
