WebResponse.Headers Vlastnost

Definice

Při přepsání v odvozené třídě získá kolekci párů názvu a hodnoty hlavičky přidružené k tomuto požadavku.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

Hodnota vlastnosti

WebHeaderCollection

Instance WebHeaderCollection třídy, která obsahuje hodnoty hlaviček přidružené k této odpovědi.An instance of the WebHeaderCollection class that contains header values associated with this response.

Výjimky

Pokud vlastnost není přepsána v odvozené třídě, bude proveden pokus o získání nebo nastavení vlastnosti.Any attempt is made to get or set the property, when the property is not overridden in a descendant class.

Příklady

Následující příklad zobrazí všechny páry název-hodnota v hlavičce vrácené v 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()
    

Poznámky

HeadersVlastnost obsahuje páry hlaviček název-hodnota vrácené v odpovědi.The Headers property contains the name-value header pairs returned in the response.

Poznámka

WebResponseTřída je abstract Třída.The WebResponse class is an abstract class. Skutečné chování WebResponse instancí za běhu je určeno potomkovou třídou, kterou vrátí WebRequest.GetResponse .The actual behavior of WebResponse instances at run time is determined by the descendant class returned by WebRequest.GetResponse. Další informace o výchozích hodnotách a výjimkách naleznete v dokumentaci pro odvozené třídy, jako jsou HttpWebResponse a FileWebResponse .For more information about default values and exceptions, please see the documentation for the descendant classes, such as HttpWebResponse and FileWebResponse.

Platí pro

Viz také