前后台【过滤标签问题】

Question

   <asp:Repeater ID="Repeater11" runat="server">
                                <HeaderTemplate>
                                    <dl>
                                </HeaderTemplate>
                                <ItemTemplate>
                                    <dt><a href="html/<%#Eval("htmlurl").ToString() %>" target="_blank">
                                        <%#Eval("title").ToString() %></a></dt>
                                    <dd>
                                        <%#Eval("detail").ToString().Length > 50 ? Eval("detail").ToString().Substring(0, 50) + "..." : Eval("detail")%></dd>
                                </ItemTemplate>
                                <FooterTemplate>
                                    </dl>
                                </FooterTemplate>
                            </asp:Repeater>用的是Repeater 绑定。  怎么把 内容的标签过程掉。前台显示的时候过滤呢 还是后台过滤。后台过滤怎么过滤。后台是绑定的。

Answer 1

<td align="center" class="text1" >@item.nvch_subject.EncodeHtml(item.nvch_subject)</td>
[code=C#]
public static string EncodeHtml(this string str,string Htmlstring)
        {
            if (!string.IsNullOrEmpty(str))
            {
                //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 = Regex.Replace(Htmlstring, @"(^\\s*)|(\\s*$)", "", RegexOptions.IgnoreCase);
                Htmlstring = Regex.Replace(Htmlstring, @"^( )+|^[\\s　]+|( )+$|[\\s　]+$", "", RegexOptions.IgnoreCase);
                Htmlstring.Replace("<", "");
                Htmlstring.Replace(">", "");
                Htmlstring.Replace("\r\n", "");
                Htmlstring.Replace("\t", "");
                Htmlstring = HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();
            }
            else
            {
                Htmlstring = null;
            }            return Htmlstring;
        }