WebException.Response Propriété

Définition

Obtient la réponse retournée par l'hôte distant.Gets the response that the remote host returned.

public:
 property System::Net::WebResponse ^ Response { System::Net::WebResponse ^ get(); };
public System.Net.WebResponse Response { get; }
member this.Response : System.Net.WebResponse
Public ReadOnly Property Response As WebResponse

Valeur de propriété

Instance de WebResponse qui contient la réponse d'erreur issue d'une ressource Internet, lorsqu'une réponse est disponible à partir de cette ressource ; sinon, null.If a response is available from the Internet resource, a WebResponse instance that contains the error response from an Internet resource; otherwise, null.

Exemples

L’exemple suivant vérifie la Status propriété et imprime sur la console StatusCode le StatusDescription et de l' HttpWebResponse instance sous-jacente.The following example checks the Status property and prints to the console the StatusCode and StatusDescription of the underlying HttpWebResponse instance.

try
{
   // Create a web request for an unknown server (this raises the WebException).
   HttpWebRequest^ myHttpWebRequest = (HttpWebRequest^)(WebRequest::Create( "http://unknown.unknown.com" ));
   
   // 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 );
}
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);
}
 Try
     'Create a web request for an invalid site. Substitute the "invalid site" strong in the Create call with a invalid name.
     Dim myHttpWebRequest As HttpWebRequest = CType(WebRequest.Create("invalid site"), HttpWebRequest)
     
     'Get the associated response for the above request.
     Dim myHttpWebResponse As HttpWebResponse = CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
     myHttpWebResponse.Close()
 Catch e As WebException
     Console.WriteLine(e.Message)
     
      If e.Status = WebExceptionStatus.ProtocolError Then
         Console.WriteLine("Status Code : {0}", CType(e.Response, HttpWebResponse).StatusCode)
         Console.WriteLine("Status Description : {0}", CType(e.Response, HttpWebResponse).StatusDescription)
     End If

Catch e As Exception
     Console.WriteLine(e.Message)
 End Try

Remarques

Certains protocoles Internet, tels que HTTP, retournent des réponses valides indiquant qu’une erreur s’est produite au niveau du protocole.Some Internet protocols, such as HTTP, return otherwise valid responses indicating that an error has occurred at the protocol level. Lorsque la réponse à une demande Internet indique une erreur, WebRequest.GetResponse affecte à Status la propriété WebExceptionStatus.ProtocolError la valeur et WebResponse fournit le qui contient le message d' Response erreur dans la WebException propriété du qui était levé.When the response to an Internet request indicates an error, WebRequest.GetResponse sets the Status property to WebExceptionStatus.ProtocolError and provides the WebResponse that contains the error message in the Response property of the WebException that was thrown. L’application peut examiner le WebResponse pour déterminer l’erreur réelle.The application can examine the WebResponse to determine the actual error.

S’applique à