急~ 下面这段代码放在什么地方啊 我放在.aspx.cs页面里 运行时候说无法确定url格式

[zhanglc1125]

StreamReader sr;
StreamWriter sw;
WebRequest HttpWebRequest = WebRequest.Create("index.aspx");
WebResponse HttpWebResponse = HttpWebRequest.GetResponse();
sr = new StreamReader(HttpWebResponse.GetResponseStream(), System.Text.Encoding.Default);
string strHtml = sr.ReadToEnd();
sw = File.CreateText(Server.MapPath("html/default.htm"));
sw.WriteLine(strHtml);
sw.Close();
Response.WriteFile(Server.MapPath("html/default.htm"));

谢谢 大侠帮忙了

[threenewbee]

WebRequest.Create("index.aspx");
至少你要指定主机啊
WebRequest.Create("http://www.abc.com/index.aspx");

[dengdengwang]

Uri ourUri = new Uri(url);

// Create a 'WebRequest' object with the specified url.
WebRequest myWebRequest = WebRequest.Create(url);

// Send the 'WebRequest' and wait for response.
WebResponse myWebResponse = myWebRequest.GetResponse();

// Use "ResponseUri" property to get the actual Uri from where the response was attained.
if (ourUri.Equals(myWebResponse.ResponseUri))
Console.WriteLine("\nRequest Url : {0} was not redirected",url);
else
Console.WriteLine("\nRequest Url : {0} was redirected to {1}",url,myWebResponse.ResponseUri);
// Release resources of response object.
myWebResponse.Close();
MSDN用法