Cookie.Discard 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。
取得或設定由伺服器設定的捨棄旗標。
public:
property bool Discard { bool get(); void set(bool value); };C#
public bool Discard { get; set; }member this.Discard : bool with get, setPublic Property Discard As Boolean如果用戶端在目前工作階段 (Session) 尾端捨棄 Cookie，則為 true，否則為 false。 預設為 false。
下列範例會顯示回應中傳回的 Cookie 屬性。 如需完整範例，請參閱 Cookie 類別主題。
HttpWebRequest^ request = dynamic_cast<HttpWebRequest^>(WebRequest::Create( args[ 1 ] ));
request->CookieContainer = gcnew CookieContainer;
HttpWebResponse^ response = dynamic_cast<HttpWebResponse^>(request->GetResponse());
response->Cookies = request->CookieContainer->GetCookies( request->RequestUri );
// Print the properties of each cookie.
System::Collections::IEnumerator^ myEnum = response->Cookies->GetEnumerator();
while ( myEnum->MoveNext() )
{
Cookie^ cook = safe_cast<Cookie^>(myEnum->Current);
Console::WriteLine( "Cookie:" );
Console::WriteLine( "{0} = {1}", cook->Name, cook->Value );
Console::WriteLine( "Domain: {0}", cook->Domain );
Console::WriteLine( "Path: {0}", cook->Path );
Console::WriteLine( "Port: {0}", cook->Port );
Console::WriteLine( "Secure: {0}", cook->Secure );
Console::WriteLine( "When issued: {0}", cook->TimeStamp );
Console::WriteLine( "Expires: {0} (expired? {1})", cook->Expires, cook->Expired );
Console::WriteLine( "Don't save: {0}", cook->Discard );
Console::WriteLine( "Comment: {0}", cook->Comment );
Console::WriteLine( "Uri for comments: {0}", cook->CommentUri );
Console::WriteLine( "Version: RFC {0}", cook->Version == 1 ? (String^)"2109" : "2965" );
// Show the string representation of the cookie.
Console::WriteLine( "String: {0}", cook );
}
C#
var request = (HttpWebRequest)WebRequest.Create(args[0]);
request.CookieContainer = new CookieContainer();
using (var response = (HttpWebResponse) request.GetResponse())
{
// Print the properties of each cookie.
foreach (Cookie cook in response.Cookies)
{
Console.WriteLine("Cookie:");
Console.WriteLine($"{cook.Name} = {cook.Value}");
Console.WriteLine($"Domain: {cook.Domain}");
Console.WriteLine($"Path: {cook.Path}");
Console.WriteLine($"Port: {cook.Port}");
Console.WriteLine($"Secure: {cook.Secure}");
Console.WriteLine($"When issued: {cook.TimeStamp}");
Console.WriteLine($"Expires: {cook.Expires} (expired? {cook.Expired})");
Console.WriteLine($"Don't save: {cook.Discard}");
Console.WriteLine($"Comment: {cook.Comment}");
Console.WriteLine($"Uri for comments: {cook.CommentUri}");
Console.WriteLine($"Version: RFC {(cook.Version == 1 ? 2109 : 2965)}");
// Show the string representation of the cookie.
Console.WriteLine($"String: {cook}");
}
}
Dim request As HttpWebRequest = WebRequest.Create(args(0))
request.CookieContainer = New CookieContainer()
Using response As HttpWebResponse = request.GetResponse()
' Print the properties of each cookie.
For Each cook As Cookie In response.Cookies
Console.WriteLine("Cookie:")
Console.WriteLine($"{cook.Name} = {cook.Value}")
Console.WriteLine($"Domain: {cook.Domain}")
Console.WriteLine($"Path: {cook.Path}")
Console.WriteLine($"Port: {cook.Port}")
Console.WriteLine($"Secure: {cook.Secure}")
Console.WriteLine($"When issued: {cook.TimeStamp}")
Console.WriteLine($"Expires: {cook.Expires} (expired? {cook.Expired})")
Console.WriteLine($"Don't save: {cook.Discard}")
Console.WriteLine($"Comment: {cook.Comment}")
Console.WriteLine($"Uri for comments: {cook.CommentUri}")
Console.WriteLine($"Version: RFC {If(cook.Version = 1, 2109, 2965)}")
' Show the string representation of the cookie.
Console.WriteLine($"String: {cook}")
Next
End Using
當 為 時 true，這個屬性會指示用戶端應用程式不要 Cookie 在會話結束時將 儲存在使用者的硬碟上。
| 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 | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
