WebHeaderCollection.Set Methode

Quelle:

WebHeaderCollection.cs

Quelle:

WebHeaderCollection.cs

Quelle:

WebHeaderCollection.cs

public:
 void Set(System::Net::HttpRequestHeader header, System::String ^ value);

public void Set (System.Net.HttpRequestHeader header, string? value);

public void Set (System.Net.HttpRequestHeader header, string value);

override this.Set : System.Net.HttpRequestHeader * string -> unit

Public Sub Set (header As HttpRequestHeader, value As String)

Parameter

Ausnahmen

Hinweise

Wenn der im Header angegebene Header nicht vorhanden ist, fügt die Set Methode einen neuen Header in die Liste der Headernamen-Wert-Paare ein.

Wenn der in header angegebene Header bereits vorhanden ist, value ersetzt den vorhandenen Wert.

Quelle:

WebHeaderCollection.cs

Quelle:

WebHeaderCollection.cs

Quelle:

WebHeaderCollection.cs

public:
 void Set(System::Net::HttpResponseHeader header, System::String ^ value);

public void Set (System.Net.HttpResponseHeader header, string? value);

public void Set (System.Net.HttpResponseHeader header, string value);

override this.Set : System.Net.HttpResponseHeader * string -> unit

Public Sub Set (header As HttpResponseHeader, value As String)

Parameter

Ausnahmen

Hinweise

Wenn der im Header angegebene Header nicht vorhanden ist, fügt die Set Methode einen neuen Header in die Liste der Headernamen-Wert-Paare ein.

Wenn der in header angegebene Header bereits vorhanden ist, value ersetzt den vorhandenen Wert.

Quelle:

WebHeaderCollection.cs

Quelle:

WebHeaderCollection.cs

Quelle:

WebHeaderCollection.cs

public:
 override void Set(System::String ^ name, System::String ^ value);

public override void Set (string name, string? value);

public override void Set (string name, string value);

override this.Set : string * string -> unit

Public Overrides Sub Set (name As String, value As String)

Parameter

Ausnahmen

Beispiele

Im folgenden Beispiel wird die Set -Methode verwendet, um den Wert eines vorhandenen Headers festzulegen.

try
{
   // Create a web request for S"www.msn.com".
   HttpWebRequest^ myHttpWebRequest = dynamic_cast<HttpWebRequest^>(WebRequest::Create( "http://www.msn.com" ));

   // Get the headers associated with the request.
   WebHeaderCollection^ myWebHeaderCollection = myHttpWebRequest->Headers;

   // Set the Cache-Control header in the request.
   myWebHeaderCollection->Set( "Cache-Control", "no-cache" );

   // Get the associated response for the above request.
   HttpWebResponse^ myHttpWebResponse = dynamic_cast<HttpWebResponse^>(myHttpWebRequest->GetResponse());
   Console::WriteLine( "Headers after 'Set' method is used on Cache-Control :" );

   // Print the headers for the request.
   PrintHeaders( myWebHeaderCollection );
   myHttpWebResponse->Close();
}
// Catch exception if trying to set a restricted header.
catch ( ArgumentException^ e ) 
{
   Console::WriteLine( "ArgumentException is thrown. Message is : {0}", e->Message );
}
catch ( WebException^ e ) 
{
   Console::WriteLine( "WebException is thrown. Message is : {0}", e->Message );
   if ( e->Status == WebExceptionStatus::ProtocolError )
   {
      Console::WriteLine( "Status Code : {0}", (dynamic_cast<HttpWebResponse^>(e->Response))->StatusCode );
      Console::WriteLine( "Status Description : {0}", (dynamic_cast<HttpWebResponse^>(e->Response))->StatusDescription );
      Console::WriteLine( "Server : {0}", (dynamic_cast<HttpWebResponse^>(e->Response))->Server );
   }
}
catch ( Exception^ e ) 
{
   Console::WriteLine( "Exception is thrown. Message is : {0}", e->Message );
}

try {
    // Create a web request for "www.msn.com".
    HttpWebRequest myHttpWebRequest = (HttpWebRequest) WebRequest.Create("http://www.msn.com");

    // Get the headers associated with the request.
    WebHeaderCollection myWebHeaderCollection = myHttpWebRequest.Headers;

    // Set the Cache-Control header in the request.
    myWebHeaderCollection.Set("Cache-Control", "no-cache");

    // Get the associated response for the above request.
    HttpWebResponse myHttpWebResponse = (HttpWebResponse) myHttpWebRequest.GetResponse();

    Console.WriteLine ("Headers after 'Set' method is used on Cache-Control :");
    // Print the headers for the request.
    PrintHeaders(myWebHeaderCollection);
    myHttpWebResponse.Close();
}
// Catch exception if trying to set a restricted header.
catch(ArgumentException e) {
    Console.WriteLine("ArgumentException is thrown. Message is :" + e.Message);
}
catch(WebException e) {
    Console.WriteLine("WebException is thrown. Message is :" + 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);
        Console.WriteLine("Server : {0}", ((HttpWebResponse)e.Response).Server);
    }
}
catch(Exception e) {
    Console.WriteLine("Exception is thrown. Message is :" + e.Message);
}

Public Shared Sub Main()

Try
        'Create a web request for "www.msn.com".
        Dim myHttpWebRequest As HttpWebRequest = CType(WebRequest.Create("http://www.msn.com"), HttpWebRequest)
        
        'Get the headers associated with the request.
        Dim myWebHeaderCollection As WebHeaderCollection = myHttpWebRequest.Headers
        
        'Set the Cache-Control header in the request.
        myWebHeaderCollection.Set("Cache-Control", "no-cache")

        'Get the associated response for the above request.
        Dim myHttpWebResponse As HttpWebResponse = CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
        
    Console.WriteLine ("Headers after 'Set' method is used on Cache-Control :")
        'Print the headers for the request.
        PrintHeaders(myWebHeaderCollection)
        myHttpWebResponse.Close()
   'Catch exception if trying to set a restricted header.
    Catch e As ArgumentException
        Console.WriteLine(e.Message)
    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)
            Console.WriteLine("Server : {0}", CType(e.Response, HttpWebResponse).Server)
        End If
    Catch e As Exception
        Console.WriteLine(e.Message)
    End Try
End Sub

Hinweise

Wenn der im Header angegebene Header nicht vorhanden ist, fügt die Set Methode einen neuen Header in die Liste der Headernamen-Wert-Paare ein.

Wenn der in header angegebene Header bereits vorhanden ist, value ersetzt den vorhandenen Wert.