本文介绍如何使用ASP.NET中的Request对象来获取当前页面及其来源页面的URL，通过具体示例展示了Request.Url、Request.UrlReferrer及Request.ServerVariables的用法。
Request.Url获取当前请求页的URL
Request.UrlReferrer或Request.ServerVariables["HTTP_REFERER"]可以获取来源URL
Default.aspx代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!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> Request.Url获得当前页面的URL<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br /> Request.UrlReferrer获得前一页面的URL<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br /> Request.ServerVariables集合获得前一页面的URL<asp:Label ID="Label3" runat="server" Text="Label"></asp:Label></div> </form></body></html>
Default.aspx.cs代码
using System;using System.Data;using System.Configuration;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 _Default : System.Web.UI.Page 
...{
protected void Page_Load(object sender, EventArgs e)
...{ Label1.Text = Request.Url.ToString(); if (Request.UrlReferrer != null) ...{ Label2.Text = Request.UrlReferrer.ToString(); Label3.Text = Request.ServerVariables["HTTP_REFERER"].ToString();
} }
}
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