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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:
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.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0
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