ASP.net做的IP访问限制
ASP.net做的IP访问限制
发布时间:2016-12-29 来源:查字典编辑
摘要: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...

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">

<tr>

<td rowspan="2">

<asp:ListBox ID="iplxb" runat="server" DataSourceID="SqlDataSource1" DataTextField="ip"

DataValueField="ip" Height="194px" Width="153px"></asp:ListBox></td>

<td>

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]"></asp:RegularExpressionValidator></td>

</tr>

<tr>

<td>

<asp:LinkButton ID="LinkButton1" runat="server">删除选中的行</asp:LinkButton></td>

</tr>

<tr>

<td>

<asp:TextBox ID="iptb" runat="server" Width="150px">61.139.33.22</asp:TextBox></td>

<td>

<asp:Button ID="Button1" runat="server" 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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