ComponentEventArgs 类
为 ComponentAdded、ComponentAdding、ComponentRemoved 和 ComponentRemoving 事件提供数据。
**命名空间:**System.ComponentModel.Design
**程序集:**System(在 system.dll 中)
语法
声明
<ComVisibleAttribute(True)> _
Public Class ComponentEventArgs
Inherits EventArgs
用法
Dim instance As ComponentEventArgs
[ComVisibleAttribute(true)]
public class ComponentEventArgs : EventArgs
[ComVisibleAttribute(true)]
public ref class ComponentEventArgs : public EventArgs
/** @attribute ComVisibleAttribute(true) */
public class ComponentEventArgs extends EventArgs
ComVisibleAttribute(true)
public class ComponentEventArgs extends EventArgs
备注
ComponentEventArgs 是所有组件管理事件的根事件参数类。当使用设计器添加或删除组件时,将发生此类型的事件。
提示
应用于此类的 HostProtectionAttribute 属性 (Attribute) 具有以下 Resources 属性 (Property) 值:SharedState。HostProtectionAttribute 不影响桌面应用程序(桌面应用程序一般通过双击图标,键入命令或在浏览器中输入 URL 启动)。有关更多信息,请参见 HostProtectionAttribute 类或 SQL Server 编程和宿主保护属性。
示例
下面的示例说明如何创建 ComponentEventArgs。
' This example method creates a ComponentEventArgs using the specified argument.
' Typically, this type of event args is created by a design mode subsystem.
Public Function CreateComponentEventArgs(ByVal component As IComponent) As ComponentEventArgs
Dim args As New ComponentEventArgs(component)
' The component that is related to the event: args.Component
Return args
End Function
// This example method creates a ComponentEventArgs using the specified argument.
// Typically, this type of event args is created by a design mode subsystem.
public ComponentEventArgs CreateComponentEventArgs(IComponent component)
{
ComponentEventArgs args = new ComponentEventArgs(component);
// The component that is related to the event: args.Component
return args;
}
public:
// This example method creates a ComponentEventArgs using the specified argument.
// Typically, this type of event args is created by a design mode subsystem.
ComponentEventArgs^ CreateComponentEventArgs( IComponent^ component )
{
// The component that is related to the event: args.Component
return gcnew ComponentEventArgs( component );
}
// This example method creates a ComponentEventArgs using
// the specified argument.
// Typically, this type of event args is created by a design mode subsystem.
public ComponentEventArgs CreateComponentEventArgs(IComponent component)
{
ComponentEventArgs args = new ComponentEventArgs(component);
// The component that is related to the event: args.Component
return args;
} //CreateComponentEventArgs
继承层次结构
System.Object
System.EventArgs
System.ComponentModel.Design.ComponentEventArgs
线程安全
此类型的任何公共静态(Visual Basic 中的 Shared)成员都是线程安全的,但不保证所有实例成员都是线程安全的。
平台
Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表,请参见系统要求。
版本信息
.NET Framework
受以下版本支持:2.0、1.1、1.0
请参见
参考
ComponentEventArgs 成员
System.ComponentModel.Design 命名空间
ComponentEventHandler
IComponentChangeService