HttpContext.Session 屬性

定義

命名空間:

System.Web

組件:

System.Web.dll

取得目前 HTTP 要求的 HttpSessionState 物件。

public:
 property System::Web::SessionState::HttpSessionState ^ Session { System::Web::SessionState::HttpSessionState ^ get(); };

public System.Web.SessionState.HttpSessionState Session { get; }

member this.Session : System.Web.SessionState.HttpSessionState

Public ReadOnly Property Session As HttpSessionState

屬性值

HttpSessionState

目前 HTTP 要求的 HttpSessionState 物件。

範例

下列範例示範如何將值儲存在會話狀態，以及如何從會話狀態讀取值。

這些範例需要：

• 已啟用會話狀態的 ASP.NET 應用程式。

• 具有屬性存取權 Page.Session 的Web Form頁面類別，或任何可存取屬性的 HttpContext.Current 類別。

string firstName = "Jeff";
string lastName = "Smith";
string city = "Seattle";

// Save to session state in a Web Forms page class.
Session["FirstName"] = firstName;
Session["LastName"] = lastName;
Session["City"] = city;

// Read from session state in a Web Forms page class.
firstName = (string)(Session["FirstName"]);
lastName = (string)(Session["LastName"]);
city = (string)(Session["City"]);

// Outside of Web Forms page class, use HttpContext.Current.
HttpContext context = HttpContext.Current;
context.Session["FirstName"] = firstName;
firstName = (string)(context.Session["FirstName"]);

Dim firstName As String = "Jeff"
Dim lastName As String = "Smith"
Dim city As String = "Seattle"

' Save to session state in a Web Forms page class.
Session("FirstName") = firstName
Session("LastName") = lastName
Session("City") = city

' Read from session state in a Web Forms page class.
firstName = DirectCast(Session("FirstName"), String)
lastName = DirectCast(Session("LastName"), String)
city = DirectCast(Session("City"), String)

' Outside of Web Forms page class, use HttpContext.Current.
Dim context As HttpContext = HttpContext.Current
context.Session("FirstName") = firstName
firstName = DirectCast(context.Session("FirstName"), String)

備註

屬性 Session 可讓您以程式設計方式存取 類別的屬性 HttpSessionState 和方法。

若要使用會話狀態，您必須加以啟用。 如需如何啟用會話狀態的資訊，請參閱 在會話狀態概觀中設定會話狀態 ASP.NET。

如需如何在會話狀態中儲存值的資訊，請參閱 如何：在會話狀態中儲存值。 如需如何從會話狀態讀取值的資訊，請參閱 如何：從會話狀態讀取值。