QueryStringParameter::Evaluate Method (HttpContext^, Control^)

 

Updates and returns the value of the QueryStringParameter object.

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

public 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 null, the Evaluate method returns null.

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
Available since 2.0
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