WebException.Response Properti

Definisi

Ruang nama:

System.Net

Rakitan:

System.Net.Requests.dll

Sumber:

WebException.cs

Mendapatkan respons yang dikembalikan host jarak jauh.

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

Nilai Properti

WebResponse

Jika respons tersedia dari sumber daya Internet, WebResponse instans yang berisi respons kesalahan dari sumber daya Internet; jika tidak, null.

Contoh

Contoh berikut memeriksa Status properti dan mencetak ke konsol StatusCode dan StatusDescription dari instans yang mendasar HttpWebResponse .

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

Keterangan

Beberapa protokol Internet, seperti HTTP, mengembalikan respons yang valid yang menunjukkan bahwa kesalahan telah terjadi pada tingkat protokol. Ketika respons terhadap permintaan Internet menunjukkan kesalahan, WebRequest.GetResponse atur Status properti ke WebExceptionStatus.ProtocolError dan berikan WebResponse yang berisi pesan kesalahan di Response properti WebException yang dilemparkan. Aplikasi dapat memeriksa WebResponse untuk menentukan kesalahan aktual.