<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ArticleAdd.aspx.cs" Inherits="ArticleAdd" validateRequest="false" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div >
        关 键 词:
        <br /><asp:TextBox ID="TextBox2" runat="server" Rows="5" width="400" TextMode="MultiLine" Text="春江|海平|明月"></asp:TextBox>
        <br />
        相应连接:
        <br /><asp:TextBox ID="TextBox3" runat="server" Rows="5" width="400" TextMode="MultiLine" Text="http://www.jtwq.com/a.aspx|http://www.jtwq.com/b.aspx|http://www.jtwq.com/c.aspx"></asp:TextBox>
        <br />
        内容输入:
        <br /><asp:TextBox ID="TextBox1" runat="server"  Rows="5" width="400" TextMode="MultiLine" Text="春江潮水连海平,海上明月共潮声。滟滟随波千万里,何处春江无月明。"></asp:TextBox>
        <br />
        <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
    </div>
    </form>
</body>
</html>using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text.RegularExpressions;public partial class ArticleAdd : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }    protected void Button1_Click(object sender, EventArgs e)
    {
        string v = TextBox1.Text;        Response.Write(StrInArray(v));    }    private string StrInArray(string v)
    {
        
        //关键词与URL可以从数据库中读取,这里直接赋值
        string vKey = "春江|海平|明月";//关键词
        string vHref = "http://www.jtwq.com/a.aspx|http://www.jtwq.com/b.aspx|http://www.jtwq.com/c.aspx";//相应的链接
        string[] arr1 = vKey.Split(new char[1] { '|' });
        string[] arr2 = vHref.Split(new char[1] { '|' });        string Reg = @"<(a|pre)\b(?:(?!</?\1).)*</\1>";//此正则参考了“lxcnn”的写法 
        MatchCollection mc = Regex.Matches(v, Reg, RegexOptions.IgnoreCase);
        string[] MatchVale = new string[mc.Count];
        int i = 0;
        foreach (Match m in mc)
        {
            MatchVale[i++] = m.Groups[0].Value.ToLower().Trim();
            v = v.Replace(m.Groups[0].Value.ToLower().Trim(), "tmpStr" + (i - 1));
        }        for (int ii = 0; ii < arr1.Length; ii++)
        {
           v = v.Replace(arr1[ii], "<a href=\"" + arr2[ii] + "\">" + arr1[ii] + "</a>");
        }        for (int iii = 0; iii < MatchVale.Length; iii++)
        {
            v = v.Replace("tmpStr" + iii, MatchVale[iii]);
        }        return v;
    }
    
}