HttpWebResponse.Headers 屬性
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得與伺服器的這個回應關聯的標頭。
public:
virtual property System::Net::WebHeaderCollection ^ Headers { System::Net::WebHeaderCollection ^ get(); };C#
public override System.Net.WebHeaderCollection Headers { get; }member this.Headers : System.Net.WebHeaderCollectionPublic Overrides ReadOnly Property Headers As WebHeaderCollectionWebHeaderCollection，包含隨回應傳回的標頭資訊。
目前的執行個體已經過處置。
下列範例會將所有回應標頭的內容寫入主控台。
// Creates an HttpWebRequest for the specified URL.
HttpWebRequest^ myHttpWebRequest = dynamic_cast<HttpWebRequest^>(WebRequest::Create( url ));
// Sends the HttpWebRequest and waits for response.
HttpWebResponse^ myHttpWebResponse = dynamic_cast<HttpWebResponse^>(myHttpWebRequest->GetResponse());
// Displays all the headers present in the response received from the URI.
Console::WriteLine( "\r\nThe following headers were received in the response:" );
// Displays each header and its key associated with the response.
for ( int i = 0; i < myHttpWebResponse->Headers->Count; ++i )
Console::WriteLine( "\nHeader Name: {0}, Value : {1}",
myHttpWebResponse->Headers->Keys[ i ],
myHttpWebResponse->Headers[ (System::Net::HttpRequestHeader)i ] );
// Releases the resources of the response.
myHttpWebResponse->Close();
C#
// Creates an HttpWebRequest for the specified URL.
HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
// Sends the HttpWebRequest and waits for response.
HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
// Displays all the headers present in the response received from the URI.
Console.WriteLine("\r\nThe following headers were received in the response:");
// Displays each header and it's key associated with the response.
for(int i=0; i < myHttpWebResponse.Headers.Count; ++i)
Console.WriteLine("\nHeader Name:{0}, Value :{1}",myHttpWebResponse.Headers.Keys[i],myHttpWebResponse.Headers[i]);
// Releases the resources of the response.
myHttpWebResponse.Close();
' Creates an HttpWebRequest with the specified URL.
Dim myHttpWebRequest As HttpWebRequest = CType(WebRequest.Create(url), HttpWebRequest)
' Sends the HttpWebRequest and waits for a response.
Dim myHttpWebResponse As HttpWebResponse = CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
' Displays all the Headers present in the response received from the URI.
Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "The following headers were received in the response")
'The Headers property is a WebHeaderCollection. Use it's properties to traverse the collection and display each header.
Dim i As Integer
While i < myHttpWebResponse.Headers.Count
Console.WriteLine(ControlChars.Cr + "Header Name:{0}, Value :{1}", myHttpWebResponse.Headers.Keys(i), myHttpWebResponse.Headers(i))
i = i + 1
End While
myHttpWebResponse.Close()
屬性 Headers 是名稱/值組的集合，其中包含回應傳回的 HTTP 標頭值。 從因特網資源傳回的通用標頭資訊會公開為 類別的屬性 HttpWebResponse 。 下表列出 API 公開為屬性的通用標頭。
| 標頭 | 屬性 |
|---|---|
| Content-Encoding | ContentEncoding |
| Content-Length | ContentLength |
| Content-Type | ContentType |
| 上次修改時間 | LastModified |
| 伺服器 | Server |
| 產品 | 版本 |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
| UWP | 10.0 |
