ControlDesigner::OnClick Method
Called by the design host when the user clicks the associated control at design time.
Assembly: System.Design (in System.Design.dll)
Parameters
- e
- Type: System.Web.UI.Design::DesignerRegionMouseEventArgs
A DesignerRegionMouseEventArgs object that specifies the location and, possibly, the control designer region that the user clicked.
The ViewEvent event is raised by the design host for certain actions on a control in the design surface. For example, an event is raised for the following conditions:
The user clicks the control.
The control designer paints on the design surface.
The user enters or exits template editing mode for the control.
The ControlDesigner class supplies a default delegate to handle the IControlDesignerView::ViewEvent event. Classes deriving from ControlDesigner override the OnClick method to process events that are raised when the user clicks a control.
The OnClick method allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
The default implementation of the OnClick method returns without performing any processing.
Notes to InheritorsOverride the OnClick method in a class deriving from the ControlDesigner class to handle design-time click events on the control. If e is not null, the clicked region, if any, is specified in the Region property.
The following code example shows how to use a handler for the OnClick event in a clickable region of the control and use a DesignerRegionMouseEventArgs object to identify the region that is being clicked.
This code example is part of a larger code example for the EditableDesignerRegion class.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.