CancelEventHandler Delegate (System.ComponentModel)

CancelEventHandler Delegate

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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

CancelEventHandler Delegate

Updated: November 2007

Represents the method that handles a cancelable event.

Namespace: System.ComponentModel
Assembly: System (in System.dll)

Syntax

Visual Basic (Declaration)

<HostProtectionAttribute(SecurityAction.LinkDemand, SharedState := True)> _
Public Delegate Sub CancelEventHandler ( _
    sender As Object, _
    e As CancelEventArgs _
)

Visual Basic (Usage)

Dim instance As New CancelEventHandler(AddressOf HandlerMethod)

[HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)]
public delegate void CancelEventHandler(
    Object sender,
    CancelEventArgs e
)

Visual C++

[HostProtectionAttribute(SecurityAction::LinkDemand, SharedState = true)]
public delegate void CancelEventHandler(
    Object^ sender, 
    CancelEventArgs^ e
)

/** @delegate */
/** @attribute HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true) */
public delegate void CancelEventHandler(
    Object sender,
    CancelEventArgs e
)

JScript

JScript does not support delegates.

Parameters

sender: Type: System..::.Object
The source of the event.

e: Type: System.ComponentModel..::.CancelEventArgs
A CancelEventArgs that contains the event data.

Remarks

Note:
The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: SharedState. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

Note:

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: SharedState. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

When you create a CancelEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event-handler method is called whenever the event occurs, unless you remove the delegate. For more information about event-handler delegates, see Events and Delegates.

Examples

For an example of how to use the CancelEventHandler delegate, please see the sample code in the CancelEventArgs class.

Platforms

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360

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.

Version Information