C#怎么清除字符串中HTML标签。。。

OGeek|极客世界-中国程序员成长平台 › 门户 › 编程› C++›C++教程

原作者: [db:作者] 来自: [db:来源] 收藏邀请

　　因为用到了一款编辑器的原因,使得数据库中保存的数据会夹杂着一些HTML标签，之后导出的数据中就会出现一些不同的HTML的标签。严重影响用户的视觉体验(主要自己都看不下去了)。。。

下面是我将DataTable进行重新组装，清除HTML标签的方法:

 1         /// <summary>
 2         /// 重新组装DataTable(主要是为了清除DataTable数据中的HTML标签)
 3         /// </summary>
 4         /// <param name="new_dt">DataTable</param>
 5         /// <param name="parms">列名(可以是多个列),如"name","age"</param>
 6         /// <returns>组装后的DataTable</returns>
 7         public DataTable GetNewTable(DataTable new_dt, params object[] parms)
 8         {
 9             Func<object, string> fnClearHtml = (object obj) =>//清除HTML标签函数
10             {
11                 var HtmlStr = obj + "";
12                 //删除脚本
13                 HtmlStr = HtmlStr.Replace("\r\n", "");
14                 HtmlStr = Regex.Replace(HtmlStr, @"<script.*?</script>", "", RegexOptions.IgnoreCase);
15                 HtmlStr = Regex.Replace(HtmlStr, @"<style.*?</style>", "", RegexOptions.IgnoreCase);
16                 HtmlStr = Regex.Replace(HtmlStr, @"<.*?>", "", RegexOptions.IgnoreCase);
17                 //删除HTML
18                 HtmlStr = Regex.Replace(HtmlStr, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
19                 HtmlStr = Regex.Replace(HtmlStr, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
20                 HtmlStr = Regex.Replace(HtmlStr, @"-->", "", RegexOptions.IgnoreCase);
21                 HtmlStr = Regex.Replace(HtmlStr, @"<!--.*", "", RegexOptions.IgnoreCase);
22                 HtmlStr = Regex.Replace(HtmlStr, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
23                 HtmlStr = Regex.Replace(HtmlStr, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
24                 HtmlStr = Regex.Replace(HtmlStr, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
25                 HtmlStr = Regex.Replace(HtmlStr, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
26                 HtmlStr = Regex.Replace(HtmlStr, @"&(nbsp|#160);", "", RegexOptions.IgnoreCase);
27                 HtmlStr = Regex.Replace(HtmlStr, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
28                 HtmlStr = Regex.Replace(HtmlStr, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
29                 HtmlStr = Regex.Replace(HtmlStr, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
30                 HtmlStr = Regex.Replace(HtmlStr, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
31                 HtmlStr = Regex.Replace(HtmlStr, @"&#(\d+);", "", RegexOptions.IgnoreCase);
32                 HtmlStr = HtmlStr.Replace("<", "");
33                 HtmlStr = HtmlStr.Replace(">", "");
34                 HtmlStr = HtmlStr.Replace("\r\n", "");
35                 HtmlStr = HttpContext.Current.Server.HtmlEncode(HtmlStr).Trim();
36                 return HtmlStr;
37             };
38             if (new_dt != null)
39             {
40                 foreach (var p in parms)
41                 {
42                     var pp = p + "";
43                     new_dt.Columns.Add(p + "1", typeof(string));
44                     foreach (DataRow dr in new_dt.Rows)
45                         dr[p + "1"] = fnClearHtml(dr[pp]);
46 
47                     new_dt.Columns.Remove(pp);
48                     new_dt.Columns[p + "1"].ColumnName = pp;
49                 }
50             }
51             return new_dt;
52         }