Microsoft.VisualBasic.ApplicationServices 命名空间

提供与当前应用程序相关的属性、方法和事件。Provides properties, methods, and events related to the current application.

提供用来获取应用程序信息（如版本号、说明、加载的程序集等）的属性。Provides properties for getting the information about the application, such as the version number, description, loaded assemblies, and so on.

提供将 BuiltInRole 枚举值转换为 WindowsBuiltInRole 枚举值的类型转换器。Provides a type converter to convert BuiltInRole enumeration values to WindowsBuiltInRole enumeration values.

当单实例应用程序的后续实例无法连接到第一个应用程序实例时，将引发此异常。This exception is thrown when a subsequent instance of a single-instance application is unable to connect to the first application instance.

提供与当前应用程序相关的属性、方法和事件。Provides properties, methods, and events related to the current application.

当未设置 MainForm 属性时，Visual Basic 应用程序模型会引发此异常。This exception is thrown by the Visual Basic Application Model when the MainForm property has not been set.

为 My.Application.Startup 事件提供数据。Provides data for the My.Application.Startup event.

为 My.Application.StartupNextInstance 事件提供数据。Provides data for the My.Application.StartupNextInstance event.

为 My.Application.UnhandledException 事件提供数据。Provides data for the My.Application.UnhandledException event.

提供对有关当前用户的信息的访问。Provides access to the information about the current user.

提供对有关当前用户的信息的访问。Provides access to the information about the current user.

提供与当前应用程序相关的属性、方法和事件。Provides properties, methods, and events related to the current application.

指示 Visual Basic 应用程序如何为 My.User 对象对用户进行身份验证。Indicates how a Visual Basic application authenticates the user for the My.User object.

指示在调用 IsInRole(BuiltInRole) 方法时检查的角色类型。Indicates the type of role to check when calling the IsInRole(BuiltInRole) method.

指示哪个条件应使 Windows 窗体应用程序关闭。Indicates which condition should cause a Windows Forms application to shut down.

表示用来处理 My.Application.Shutdown 事件的方法。Represents the method that will handle the My.Application.Shutdown event.

表示用来处理 My.Application.Startup 事件的方法。Represents the method that will handle the My.Application.Startup event.

表示用来处理 My.Application.StartupNextInstance 事件的方法。Represents the method that will handle the My.Application.StartupNextInstance event.

表示用来处理 My.Application.UnhandledException 事件的方法。Represents the method that will handle the My.Application.UnhandledException event.