Cookie.Expires 属性
定义
public:
property DateTime Expires { DateTime get(); void set(DateTime value); };
public DateTime Expires { get; set; }
member this.Expires : DateTime with get, set
Public Property Expires As DateTime
属性值
作为 Cookie 实例的 DateTime 过期日期和时间。The expiration date and time for the Cookie as a DateTime instance.
示例
下面的示例显示了在响应中返回的 cookie 的属性。The following example displays the properties of cookies returned in a response. 有关完整的示例,请参阅 Cookie 类主题。For the complete example, see the Cookie class topic.
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 );
}
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
注解
将 Expires 属性设置为 DateTime.MinValue 会使其成为会话 cookie,这是其默认值。Setting the Expires property to DateTime.MinValue makes this a session cookie, which is its default value.
的 Kind 属性 Expires 用于确定 cookie 是设置为 DateTimeKind.Local 还是 DateTimeKind.Utc 。The Kind property of Expires is used to determine if the cookie is set to DateTimeKind.Local or DateTimeKind.Utc. 如果将 Kind 属性设置为 DateTimeKind.Unspecified ,则 Utc 假定为。If the Kind property is set to DateTimeKind.Unspecified, then Utc is assumed.