c# how to gather the name surname example : AlexandarBogoslovov

Can some one tell me how can i make in C# to gather the names of my users..?!
the code is used
 
So i want the script to gather just Veronica Roslovtseva.
 
I am new in C# so if you explain me according to that i would be happy.
 
[edit]unnecessary code blocks removed[/edit]
 
OP's additional information moved from 2 non solutions below

<span class="username"><span dir="ltr">(AlexandarBogoslovov)</span></span><br />

 
The code i have inserted on comment is a code from my site where i need the application gather users fullname info.