HttpWebRequest.Accept 属性
获取或设置 Accept HTTP 标头的值。
**命名空间:**System.Net
**程序集:**System（在 system.dll 中）
语法
声明
Public Property Accept As String
用法
Dim instance As HttpWebRequest
Dim value As String
value = instance.Accept
instance.Accept = value
public string Accept { get; set; }
public:
property String^ Accept {
String^ get ();
void set (String^ value);
}
/** @property */
public String get_Accept ()
/** @property */
public void set_Accept (String value)
public function get Accept () : String
public function set Accept (value : String)
属性值
Accept HTTP 标头的值。默认值为 空引用（在 Visual Basic 中为 Nothing）。
备注
若要清除 Accept HTTP 标头，请将 Accept 属性设置为 空引用（在 Visual Basic 中为 Nothing）。
提示
此属性的值存储在 WebHeaderCollection 中。如果设置了 WebHeaderCollection，则该属性值将丢失。
示例
下面的代码示例设置 Accept 属性。
' Create a 'HttpWebRequest' object.
Dim myHttpWebRequest As HttpWebRequest = WebRequest.Create(myUri)
' Set the 'Accept' property to accept an image of any type.
myHttpWebRequest.Accept = "image/*"
' The response object of 'HttpWebRequest' is assigned to a 'HttpWebResponse' variable.
Dim myHttpWebResponse As HttpWebResponse = CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
// Create a 'HttpWebRequest' object.
HttpWebRequest myHttpWebRequest=(HttpWebRequest)WebRequest.Create(myUri);
// Set the 'Accept' property to accept an image of any type.
myHttpWebRequest.Accept="image/*";
// The response object of 'HttpWebRequest' is assigned to a 'HttpWebResponse' variable.
HttpWebResponse myHttpWebResponse=(HttpWebResponse)myHttpWebRequest.GetResponse();
// Create a 'HttpWebRequest' object.
HttpWebRequest^ myHttpWebRequest = (HttpWebRequest^)( WebRequest::Create( myUri ) );
// Set the 'Accept' property to accept an image of any type.
myHttpWebRequest->Accept = "image/*";
// The response object of 'HttpWebRequest' is assigned to a 'HttpWebResponse' variable.
HttpWebResponse^ myHttpWebResponse = (HttpWebResponse^)( myHttpWebRequest->GetResponse() );
// Create a 'HttpWebRequest' object.
HttpWebRequest myHttpWebRequest = (HttpWebRequest)
(WebRequest.Create(myUri));
// Set the 'Accept' property to accept an image of any type.
myHttpWebRequest.set_Accept("image/*");
// The response object of 'HttpWebRequest' is assigned to a
//'HttpWebResponse' variable.
HttpWebResponse myHttpWebResponse = (HttpWebResponse)
(myHttpWebRequest.GetResponse());
平台
Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
.NET Compact Framework
受以下版本支持：2.0、1.0