提取HTML代码中文字的C#函数在做一些网站（特别是bbs之类）时，经常会有充许用户输入html样式代码，却禁止脚本的运行的需求, 以达到丰富网页样式，禁止恶意代码的运行。-Extraction of HTML code in the C# language function to do at some website (especially bbs like) often will allow the user to enter html code style, but to prohibit the operation of the scr ipt needs, so as to achieve a rich web page style, the prohibition of malicious code run.