Provides design-time support in a visual designer for the HiddenField control.
Assembly: System.Design (in System.Design.dll)
In a visual designer, when the user switches from Source to Design view, the markup source code that describes a HiddenField control is parsed and a design-time version of the control is created on the design surface. When the user switches back to Source view, the design-time control is persisted to the markup source code and edited into the markup for the Web page. The class provides design-time support for the HiddenField in a visual designer.
The GetDesignTimeHtml method returns the markup that is used to render the associated HiddenField at design time. The Initialize method prepares the designer to view, edit, and design the associated HiddenField.
The following code example shows how to extend the class to change the appearance of controls that are derived from the HiddenField control at design time.
The example derives the MyHiddenField control from the HiddenField. The MyHiddenField is a copy of the HiddenField. The example also derives the MyHiddenFieldDesigner class from the class and applies a DesignerAttribute attribute for the MyHiddenFieldDesigner on the MyHiddenField control.
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.