'宣言
<System.AttributeUsageAttribute(AttributeTargets.Class, Inherited=True, AllowMultiple=False)> Public NotInheritable Class DeletedStateIsAvailableAttribute Inherits System.Attribute
[System.AttributeUsage(AttributeTargets.Class, Inherited=true, AllowMultiple=false)] public sealed class DeletedStateIsAvailableAttribute : System.Attribute