WebClient.ResponseHeaders 属性

定义

命名空间:

System.Net

程序集:

System.Net.WebClient.dll

Source:

WebClient.cs

获取与响应关联的标头名称/值对的集合。

public:
 property System::Net::WebHeaderCollection ^ ResponseHeaders { System::Net::WebHeaderCollection ^ get(); };

public System.Net.WebHeaderCollection? ResponseHeaders { get; }

member this.ResponseHeaders : System.Net.WebHeaderCollection

Public ReadOnly Property ResponseHeaders As WebHeaderCollection

属性值

WebHeaderCollection

包含与响应关联的标头名称/值对的 WebHeaderCollection;如果未收到响应，则 null。

示例

下面的代码示例下载并显示服务器返回的 ResponseHeaders。

// Obtain the WebHeaderCollection instance containing the header name/value pair from the response.
WebHeaderCollection^ myWebHeaderCollection = myWebClient->ResponseHeaders;
Console::WriteLine( "\nDisplaying the response headers\n" );

// Loop through the ResponseHeaders and display the header name/value pairs.
for ( int i = 0; i < myWebHeaderCollection->Count; i++ )
{
   Console::WriteLine( "\t{0} = {1}", myWebHeaderCollection->GetKey( i ),
      myWebHeaderCollection->Get( i ) );
}

// Obtain the WebHeaderCollection instance containing the header name/value pair from the response.
WebHeaderCollection myWebHeaderCollection = myWebClient.ResponseHeaders;
Console.WriteLine("\nDisplaying the response headers\n");
// Loop through the ResponseHeaders and display the header name/value pairs.
for (int i=0; i < myWebHeaderCollection.Count; i++)				
    Console.WriteLine ("\t" + myWebHeaderCollection.GetKey(i) + " = " + myWebHeaderCollection.Get(i));

' ResponseHeaders is a WebHeaderCollection instance that contains the headers sent back 
 ' in response to the WebClient request. 
Dim myWebHeaderCollection As WebHeaderCollection = myWebClient.ResponseHeaders
Console.WriteLine(ControlChars.Cr + "Displaying the response headers" + ControlChars.Cr)
' Loop through the ResponseHeaders.
Dim i As Integer
For i = 0 To myWebHeaderCollection.Count - 1
    ' Display the headers as name/value pairs.
    Console.WriteLine((ControlChars.Tab + myWebHeaderCollection.GetKey(i) + " " + ChrW(61) + " " + myWebHeaderCollection.Get(i)))
Next i 

注解

谨慎

WebRequest、HttpWebRequest、ServicePoint和 WebClient 已过时，不应将其用于新开发。 请改用 HttpClient。

ResponseHeaders 属性包含一个 WebHeaderCollection 实例，其中包含 WebClient 随响应一起接收的标头信息。