[ASP.NET]利用WebRequest與WebResponse來判斷Url是否存在

2009-01-06

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ASP.NET

今天在討論區看到這個問題..去找了一下答案..
有人提到利用WebRequest與WebResponse來判斷

今天在討論區看到這個問題..去找了一下答案..

有人提到利用WebRequest與WebResponse來判斷

CheckUrl.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CheckUrl.aspx.cs" Inherits="CheckUrl" %> <!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>CheckUrl</title> </head> <body> <form id="form1" runat="server"> <div> Check Url：<asp:TextBox ID="txbUrl" runat="server" Width="350px"></asp:TextBox> <asp:Button ID="btnCheck" runat="server" OnClick="btnCheck_Click" Text="Check" /></div> </form> </body> </html>

CheckUrl.aspx.cs

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; using System.Net; public partial class CheckUrl : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void btnCheck_Click(object sender, EventArgs e) { Uri urlCheck = new Uri(this.txbUrl.Text.Trim()); WebRequest request = WebRequest.Create(urlCheck); request.Timeout = 15000; WebResponse response; try { response = request.GetResponse(); Response.Write("Url存在"); } catch (Exception) { Response.Write("Url不存在"); } } }

執行結果：

參考網址：
http://www.vcskicks.com/links.html

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