我需要檢查請求是否會返回500服務器內部錯誤（所以得到錯誤是預期的）。我這樣做：Asp.net HttpWebResponse - 我怎樣才能不依賴WebException流量控制？
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "GET";
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
if (response.StatusCode == HttpStatusCode.OK)
return true;
else
return false;
但是，當我得到的500內部服務器錯誤，引發WebException，我不想依賴它來控制應用程序的流程 - 如何才能做到這一點？
事實上，由於在MSDN中的例子，有沒有辦法不依賴於異常的控制流上。下面是他們給出的例子：
try {
// Create a web request for an invalid site. Substitute the "invalid site" strong in the Create call with a invalid name.
HttpWebRequest myHttpWebRequest = (HttpWebRequest) WebRequest.Create("invalid site");
// Get the associated response for the above request.
HttpWebResponse myHttpWebResponse = (HttpWebResponse) myHttpWebRequest.GetResponse();
myHttpWebResponse.Close();
}
catch(WebException e) {
Console.WriteLine("This program is expected to throw WebException on successful run."+
"\n\nException Message :" + e.Message);
if(e.Status == WebExceptionStatus.ProtocolError) {
Console.WriteLine("Status Code : {0}", ((HttpWebResponse)e.Response).StatusCode);
Console.WriteLine("Status Description : {0}", ((HttpWebResponse)e.Response).StatusDescription);
}
}
catch(Exception e) {
Console.WriteLine(e.Message);
}
顯然，有時你必須走下那條路。呃，好吧。