WebResponse.Headers Propriété

Définition

En cas de substitution dans une classe dérivée, obtient une collection de paires nom-valeur d’en-tête associées à cette demande.When overridden in a derived class, gets a collection of header name-value pairs associated with this request.

public:
 virtual property System::Net::WebHeaderCollection ^ Headers { System::Net::WebHeaderCollection ^ get(); };
public virtual System.Net.WebHeaderCollection Headers { get; }
member this.Headers : System.Net.WebHeaderCollection
Public Overridable ReadOnly Property Headers As WebHeaderCollection

Valeur de propriété

Instance de la classe WebHeaderCollection qui contient les valeurs d'en-tête associées à cette réponse.An instance of the WebHeaderCollection class that contains header values associated with this response.

Exceptions

Toutes les tentatives possibles sont effectuées pour obtenir ou définir la propriété si celle-ci n’est pas substituée dans une classe descendante.Any attempt is made to get or set the property, when the property is not overridden in a descendant class.

Exemples

L’exemple suivant affiche toutes les paires nom-valeur d’en-tête retournées dans le WebResponse.The following example displays all of the header name-value pairs returned in the WebResponse.

// Create a 'WebRequest' object with the specified url.
WebRequest^ myWebRequest = WebRequest::Create( "http://www.contoso.com" );

// Send the 'WebRequest' and wait for response.
WebResponse^ myWebResponse = myWebRequest->GetResponse();

// Display all the Headers present in the response received from the URl.
Console::WriteLine( "\nThe following headers were received in the response" );

// Display each header and its key , associated with the response object.
for ( int i = 0; i < myWebResponse->Headers->Count; ++i )
   Console::WriteLine( "\nHeader Name: {0}, Header value : {1}", myWebResponse->Headers->Keys[ i ], myWebResponse->Headers[ i ] );

// Release resources of response object.
myWebResponse->Close();


    // Create a 'WebRequest' object with the specified url. 	
   WebRequest myWebRequest = WebRequest.Create("http://www.contoso.com"); 

   // Send the 'WebRequest' and wait for response.
WebResponse myWebResponse = myWebRequest.GetResponse(); 

   // Display all the Headers present in the response received from the URl.
   Console.WriteLine("\nThe following headers were received in the response");

// Display each header and it's key , associated with the response object.
   for(int i=0; i < myWebResponse.Headers.Count; ++i)  
      Console.WriteLine("\nHeader Name:{0}, Header value :{1}",myWebResponse.Headers.Keys[i],myWebResponse.Headers[i]); 

   // Release resources of response object.
   myWebResponse.Close(); 
   

    ' Create a 'WebRequest' object with the specified url 	
    Dim myWebRequest As WebRequest = WebRequest.Create("www.contoso.com")
    
    ' Send the 'WebRequest' and wait for response.
    Dim myWebResponse As WebResponse = myWebRequest.GetResponse()
    
    ' Display all the Headers present in the response received from the URl.
    Console.WriteLine(ControlChars.Cr + "The following headers were received in the response")
    
    ' Headers property is a 'WebHeaderCollection'. Use it's properties to traverse the collection and display each header
    Dim i As Integer
    
    While i < myWebResponse.Headers.Count
        Console.WriteLine(ControlChars.Cr + "Header Name:{0}, Header value :{1}", myWebResponse.Headers.Keys(i), myWebResponse.Headers(i))
i = i + 1
    End While

    ' Release resources of response object.
    myWebResponse.Close()
    

Remarques

La propriété Headers contient les paires d’en-tête nom-valeur retournées dans la réponse.The Headers property contains the name-value header pairs returned in the response.

Notes

La classe WebResponse est une classe abstract.The WebResponse class is an abstract class. Le comportement réel des instances de WebResponse au moment de l’exécution est déterminé par la classe descendante retournée par WebRequest.GetResponse.The actual behavior of WebResponse instances at run time is determined by the descendant class returned by WebRequest.GetResponse. Pour plus d’informations sur les valeurs par défaut et les exceptions, consultez la documentation des classes descendantes, telles que HttpWebResponse et FileWebResponse.For more information about default values and exceptions, please see the documentation for the descendant classes, such as HttpWebResponse and FileWebResponse.

S’applique à

Voir aussi