1
我有一個叫做GetIP的函數,我在啓動時以及用戶按下按鈕時調用它。由於某種原因,它不會在啓動時崩潰,但它在使用按鈕調用函數時會發生。沒有任何東西只是凍結。對於功能Webclient.DownloadString崩潰
代碼:
private void GetIP()
{
string pageTitle = functions.GetWebPageTitle("http://xyro18.woelmuis.nl/index.php");
string[] ip = new string[2];
ip = pageTitle.Split('|');
currentIpLabel.Text = ip[0];
webIpLabel.Text = ip[1];
}
現在,我發現它就在我的getWebPageTitle功能崩潰的功能
代碼:
public static string GetWebPageTitle(string url)
{
// Create a request to the url
HttpWebRequest request = HttpWebRequest.Create(url) as HttpWebRequest;
request.Method = "HEAD";
// If the request wasn't an HTTP request (like a file), ignore it
if (request == null) return null;
// Use the user's credentials
request.UseDefaultCredentials = true;
// Obtain a response from the server, if there was an error, return nothing
HttpWebResponse response = null;
try { response = request.GetResponse() as HttpWebResponse; }
catch (WebException) { return null; }
// Regular expression for an HTML title
string regex = @"(?<=<title.*>)([\s\S]*)(?=</title>)";
// If the correct HTML header exists for HTML text, continue
if (new List<string>(response.Headers.AllKeys).Contains("Content-Type"))
if (response.Headers["Content-Type"].StartsWith("text/html"))
{
// Download the page
WebClient web = new WebClient();
web.UseDefaultCredentials = true;
string page = web.DownloadString(url);
// Extract the title
Regex ex = new Regex(regex, RegexOptions.IgnoreCase);
return ex.Match(page).Value.Trim();
}
// Not a valid HTML page
return null;
}
它崩潰的web.DownloadString
與崩潰我的意思是凍結,並不顯示任何豁免等
感謝它的工作,實現了所有的選項,似乎是我沒有關閉響應信號。 – Xyro 2010-09-30 12:09:20