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" %>










ProviderName="<% ConnectionStrings:book.ProviderName %>" SelectCommand="SELECT [ip] FROM [ip]">







DataValueField="ip" Height="194px" Width="153px">



填写标准的ＩＰ地址到左下文本框里面，然后点击按纽添加！

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})">







onClick="LinkButton1_Click">删除选中的行







61.139.33.22



onClick="Button1_Click" Text="增加" Width="80px" />

　　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");
}
}

来源:网络