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
protected Object Evaluate (
	HttpContext context, 
	Control control
)
protected override function Evaluate (
	context : HttpContext, 
	control : Control
) : Object
Not applicable.

Parameters

context

The current HttpContext of the request.

control

A Control that is associated with the Web Form where the QueryStringParameter is used.

Return Value

An object that represents the updated and current value of the parameter. If the context or the request in null (Nothing in Visual Basic), the Evaluate method returns null.

The QueryStringParameter attempts to bind to the query string field every time 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 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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