利用正規表達式(Regular Expression)將html內容的tag標籤刪除掉
這個範例是最近剛好有小舖的網友所提出來的問題....
主要是透過正規表達式找到是<>或< />的html tag都給濾除掉
c#範例
regular_CS.aspx
01 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="regular_CS.aspx.cs" Inherits="regular_CSspx"
02 ValidateRequest="false" %>
03
04 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
05 <html xmlns="http://www.w3.org/1999/xhtml">
06 <head id="Head1" runat="server">
07 <title>未命名頁面</title>
08 </head>
09 <body>
10 <form id="form1" runat="server">
11 <div>
12 <asp:TextBox ID="TextBox1" runat="server" Height="131px" TextMode="MultiLine" Width="268px"></asp:TextBox>
13 <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="處理" /><br />
14 <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></div>
15 </form>
16 </body>
17 </html>
18
02 ValidateRequest="false" %>
03
04 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
05 <html xmlns="http://www.w3.org/1999/xhtml">
06 <head id="Head1" runat="server">
07 <title>未命名頁面</title>
08 </head>
09 <body>
10 <form id="form1" runat="server">
11 <div>
12 <asp:TextBox ID="TextBox1" runat="server" Height="131px" TextMode="MultiLine" Width="268px"></asp:TextBox>
13 <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="處理" /><br />
14 <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></div>
15 </form>
16 </body>
17 </html>
18
regular_CS.aspx.cs
01 
using System;
02
using System.Data;
03using System.Configuration;
04using System.Collections;
05using System.Web;
06using System.Web.Security;
07using System.Web.UI;
08using System.Web.UI.WebControls;
09using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
using System.Text.RegularExpressions;
12
13public partial class regular_CSspx : System.Web.UI.Page
14{
15
protected void Page_Load(object sender, EventArgs e)
16
{
17
}
18 protected void Button1_Click(object sender, EventArgs e)
19 {
20 String ZipRegex = @"<\s*(?<Tag>/*\s*[^<^>^\s]+)(?<Para>(\s*[^<^>^\s]+)*)\s*>";
21
22 String newText = Regex.Replace(this.TextBox1.Text, ZipRegex, "");
23
24 this.Label1.Text = newText;
25 }
26}
using System;
using 02
using System.Data;03
using System.Configuration;04
using System.Collections;05
using System.Web;06
using System.Web.Security;07
using System.Web.UI;08
using System.Web.UI.WebControls;09
using System.Web.UI.WebControls.WebParts;10
using System.Web.UI.HtmlControls;11
using System.Text.RegularExpressions;12
13
public partial class regular_CSspx : System.Web.UI.Page14
{15
protected void Page_Load(object sender, EventArgs e)16
{
17
}18
protected void Button1_Click(object sender, EventArgs e)19
{20
String ZipRegex = @"<\s*(?<Tag>/*\s*[^<^>^\s]+)(?<Para>(\s*[^<^>^\s]+)*)\s*>";21
22 String newText = Regex.Replace(this.TextBox1.Text, ZipRegex, "");
23
24 this.Label1.Text = newText;
25
}26
}