In order to use session state you have to enable it. The Session property provides programmatic access to the properties and methods of the HttpSessionState class. ' Outside of Web Forms page class, use HttpContext.Current.ĭim context As HttpContext = HttpContext.CurrentįirstName = DirectCast(context.Session("FirstName"), String) LastName = DirectCast(Session("LastName"), String)Ĭity = DirectCast(Session("City"), String) ' Read from session state in a Web Forms page class.įirstName = DirectCast(Session("FirstName"), String) ' Save to session state in a Web Forms page class. HttpContext context = HttpContext.Current Ĭontext.Session = firstName įirstName = (string)(context.Session) Outside of Web Forms page class, use HttpContext.Current. Read from session state in a Web Forms page class.įirstName = (string)(Session) Save to session state in a Web Forms page class. The following examples show how to save values in session state and how to read values from session state.Īn ASP.NET application that has session state enabled.Ī Web Forms page class that has access to the Page.Session property, or any class that has access to the HttpContext.Current property. The HttpSessionState object for the current HTTP request. Property System::Web::SessionState::HttpSessionState ^ Session member this.Session : Public ReadOnly Property Session As HttpSessionState Property Value HttpSessionState You can olny have a finalization if you have an initialization.Gets the HttpSessionState object for the current HTTP request. It even has a way to construct and destruct: unit A If you really need a global, you better define it in the implementations section and provide access functions.īy the way, you can see a unit as a kind of a class (with a single instance). I strongly advice against using globals in the interface section because you have no control over them (because anybody can change them). GVar2 is only visisble by the code of unit A because it is defined in the implementation section. GVar1 is visible and can be modified by all units using unit A.
You can declare global variables by declaring them in a unit: unit A
The declarations in the interface section are visible to all units that use the unit: unit A Each form is a separate unit but a unit does not have to contain a form.Įach unit has an interface section and a implementation section. Nope, a unit is not equivalent to a form.Ī unit is a module which contains part of your program.
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