This documentation is archived and is not being maintained.

QueryStringParameter::Evaluate Method

Updates and returns the value of the QueryStringParameter object.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

protected public:
virtual Object^ Evaluate(
	HttpContext^ context, 
	Control^ control
) override

Parameters

context
Type: System.Web::HttpContext
The current HttpContext instance of the request.
control
Type: System.Web.UI::Control
A Web server control that is associated with the ASP.NET Web page where the QueryStringParameter object is used.
Note   This parameter is not used.

Return Value

Type: System::Object
An object that represents the current value of the parameter. If the context or the request is nullptr, the Evaluate method returns nullptr.

The QueryStringParameter object tries to bind to the query-string field every time that the Evaluate method is called.

The context parameter is used by the Evaluate method to retrieve the value of the specified query-string field from the query string. The control parameter is ignored.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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