WebPartManager.DisplayModeChanging Event

Occurs after a user clicks a verb on a Web page that begins the process of changing to a different display mode.

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

public event WebPartDisplayModeCancelEventHandler DisplayModeChanging
<asp:WebPartManager OnDisplayModeChanging="WebPartDisplayModeCancelEventHandler" />

Display modes are an integral part of Web Parts applications. When users switch to a different display mode on a Web page, the page will often take on a very different appearance, depending on the purpose of the new display mode. After a user initiates the process of changing to a new display mode by clicking a verb, you might want to make certain changes in the user interface (UI) by using the NewDisplayMode property to determine what the new display mode will be, and then changing various UI elements accordingly. A useful way to do this is to override the OnDisplayModeChanging method to customize the UI.

NoteNote:

For more information on display modes, see Web Parts Page Display Modes. For more information on consuming events, see How to: Consume Events in a Web Forms Application.

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0
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