asp.net如何去掉HTML标记

/// <summary>

/// 去除HTML标记

/// </summary>

/// <param name="NoHTML">包括HTML的源码 </param>

/// <returns>已经去除后的文字</returns>

public static string NoHTML(string Htmlstring)

{

//删除脚本

Htmlstring = Regex.Replace(Htmlstring,@"<script[^>]*?>.*?</script>","",RegexOptions.IgnoreCase);

//删除HTML

Htmlstring = Regex.Replace(Htmlstring,@"<(.[^>]*)>","",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"([\r\n])[\s]+","",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"-->","",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"<!--.*","",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(quot|#34);","\"",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(amp|#38);","&",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(lt|#60);","<",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(gt|#62);",">",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(nbsp|#160);"," ",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(iexcl|#161);","\xa1",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(cent|#162);","\xa2",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(pound|#163);","\xa3",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring,@"&(copy|#169);","\xa9",RegexOptions.IgnoreCase);

Htmlstring = Regex.Replace(Htmlstring, @"&#(\d+);","",RegexOptions.IgnoreCase);

Htmlstring.Replace("<","");

Htmlstring.Replace(">","");

Htmlstring.Replace("\r\n","");

Htmlstring=HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();

return Htmlstring;

}

///提取HTML代码中文字的C#函数

/// <summary>

/// 去除HTML标记

/// </summary>

/// <param name="strHtml">包括HTML的源码 </param>

/// <returns>已经去除后的文字</returns>

using System;

using System.Text.RegularExpressions;

public class StripHTMLTest{

public static void Main(){

string s=StripHTML("<HTML><HEAD><TITLE>中国石龙信息平台</TITLE></HEAD><BODY>faddfs龙信息平台</BODY></HTML>");

Console.WriteLine(s);

}

public static string StripHTML(string strHtml){

string [] aryReg ={

@"<script[^>]*?>.*?</script>",

@"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""'])(\\[""'tbnr]|[^\7])*?\7|\w+)|.{0})|\s)*?(\/\s*)?>",

@"([\r\n])[\s]+",

@"&(quot|#34);",

@"&(amp|#38);",

@"&(lt|#60);",

@"&(gt|#62);",

@"&(nbsp|#160);",

@"&(iexcl|#161);",

@"&(cent|#162);",

@"&(pound|#163);",

@"&(copy|#169);",

@"&#(\d+);",

@"-->",

@"<!--.*\n"

};

string [] aryRep = {

"",

"\"",

"&",

"<",

">",

" ",

"\xa1",//chr(161),

"\xa2",//chr(162),

"\xa3",//chr(163),

"\xa9",//chr(169),

"",

"\r\n",

};

string newReg =aryReg[0];

string strOutput=strHtml;

for(int i = 0;i<aryReg.Length;i++){

Regex regex = new Regex(aryReg[i],RegexOptions.IgnoreCase);

strOutput = regex.Replace(strOutput,aryRep[i]);

}

strOutput.Replace("<","");

strOutput.Replace(">","");

strOutput.Replace("\r\n","");

return strOutput;

}

写一个静态方法

移除HTML标签

取出文本中的图片地址