EventHandlerList Class (System.ComponentModel)

EventHandlerList Class

Provides a simple list of delegates. This class cannot be inherited.

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

Syntax

Visual Basic (Declaration)

Public NotInheritable Class EventHandlerList
    Implements IDisposable

Visual Basic (Usage)

Dim instance As EventHandlerList

public sealed class EventHandlerList : IDisposable

C++

public ref class EventHandlerList sealed : IDisposable

public final class EventHandlerList implements IDisposable

JScript

public final class EventHandlerList implements IDisposable

XAML

Not applicable.

Remarks

This class uses a linear search algorithm to find entries in the list of delegates. A linear search algorithm is inefficient when working with a large number of entries. Therefore, when you have a large list, finding entries is slow.

Note:
The HostProtectionAttribute attribute applied to this class 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 class 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.

Example

For an example of using an EventHandlerList, see How to: Handle Multiple Events with Event Properties.

Inheritance Hierarchy

System.Object
System.ComponentModel.EventHandlerList

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

Version Information

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

Reference

EventHandlerList Members
System.ComponentModel Namespace