怎么把这段html代码弄成C#的字符形

如何把这段html代码弄成C#的字符形?
<span   class= "black14 "   id= "mb ">

把上面的这段html代码写成字符型的.因为我要用到一个类,而这个类有一个字符型参数(int   N,string   strhtml   int   N).   把strhtml写成 " <span   class= "black14 "   id= "mb "> ",很明显是不行的,那我应该怎么写呢?谢谢!

[解决办法]
string strhtml=@ " <span class= " "black14 " " id= " "mb " "> ";
[解决办法]
string theHtml= " <span class=\ "black14\ " id=\ "mb\ "> ";