Parameter::Evaluate Method (HttpContext^, Control^)
.NET Framework (current version)
Updates and returns the value of the Parameter object.
Assembly: System.Web (in System.Web.dll)
Parameters
- context
-
Type:
System.Web::HttpContext^
The current HttpContext of the request.
- control
-
Type:
System.Web.UI::Control^
The Control the parameter is bound to. If the parameter is not bound to a control, the control parameter is ignored.
Return Value
Type: System::Object^An object that represents the updated and current value of the parameter.
The default implementation of the Evaluate method is to return null in all cases. Classes that derive from the Parameter class override the Evaluate method to return an updated parameter value. For example, the ControlParameter object returns the value of the control that it is bound to, while the QueryStringParameter object retrieves the current name/value pair from the HttpRequest object.
.NET Framework
Available since 2.0
Available since 2.0
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