偶做留言本的时候想起做这么个,具体思路也许不好,做出来只是抛砖引玉,希望有更好的方法! IP添加页是用了一个ListBox, TextBox,两个Button 而在其他的页上则直接用当前IP对比数据库中的IP,代码如下! 限制IP添加页HTML代码<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ip.aspx.cs" Inherits="admin_ip" %> <!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> <link href="../images/news.css" rel="stylesheet" type="text/css" /></head><body> <form id="form1" runat="server"> <div> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:book %>" ProviderName="<%$ ConnectionStrings:book.ProviderName %>" SelectCommand="SELECT [ip] FROM [ip]"> </asp:SqlDataSource> <table align="center" style="border-right: #0066cc 1px dotted; border-top: #0066cc 1px dotted; border-left: #0066cc 1px dotted; border-bottom: #0066cc 1px dotted"> <tr> <td rowspan="2" style="width: 100px; border-right: #33ccff 1px groove; border-top: #33ccff 1px groove; border-left: #33ccff 1px groove; border-bottom: #33ccff 1px groove;"> <asp:ListBox ID="iplxb" runat="server" DataSourceID="SqlDataSource1" DataTextField="ip" DataValueField="ip" Height="194px" Width="153px"></asp:ListBox></td> <td style="width: 100px; border-right: #33ccff 1px groove; border-top: #33ccff 1px groove; border-left: #33ccff 1px groove; border-bottom: #33ccff 1px groove;"> 填写标准的ＩＰ地址到左下文本框里面，然后点击按纽添加！<br /> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="iptb" Display="Dynamic" ErrorMessage="ＩＰ地址格式不正确" ValidationExpression="([0-9]{2,3})([.])([0-9]{1,3})([.])([0-9]{1,3})([.])([0-9]{1,3})"></asp:RegularExpressionValidator></td> </tr> <tr> <td style="width: 100px; border-right: #33ccff 1px groove; border-top: #33ccff 1px groove; border-left: #33ccff 1px groove; border-bottom: #33ccff 1px groove;"> <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">删除选中的行</asp:LinkButton></td> </tr> <tr> <td style="width: 100px; border-right: #33ccff 1px groove; border-top: #33ccff 1px groove; border-left: #33ccff 1px groove; border-bottom: #33ccff 1px groove;"> <asp:TextBox ID="iptb" runat="server" Width="150px">61.139.33.22</asp:TextBox></td> <td style="width: 100px; border-right: #33ccff 1px groove; border-top: #33ccff 1px groove; border-left: #33ccff 1px groove; border-bottom: #33ccff 1px groove;"> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="增加" Width="80px" /></td> </tr> </table> </div> </form></body></html>限制IP添加页CS代码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; public partial class admin_ip : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { Server.Execute("chklog.aspx"); } protected void Button1_Click(object sender, EventArgs e) { iplxb.Items.Add(iptb.Text); odb.insert("insert into ip (ip) values ('" + iptb.Text + "')"); } protected void LinkButton1_Click(object sender, EventArgs e) { for (int i = 0; i < iplxb.Items.Count; i++) { if (iplxb.Items[i].Selected) { odb.insert("delete from ip where ip='"+iplxb.SelectedItem.Text+"'"); iplxb.Items.Remove(iplxb.SelectedItem.Text); } } }}被需要限制IP的页面调用页的代码 protected void Page_Load(object sender, EventArgs e) { string ip = Request.UserHostAddress.ToString(); if (Convert.ToInt32(odb.scr("select count(*) from [ip] where ip='" + ip + "'")) > 0) Response.Write("对不起，您的IP被限制访问，请咨询管理员"); }}
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