c# - .NET 枚举允许在最后一个字段中使用逗号

Question

为什么这个 .NET 枚举允许在最后一个字段中有一个逗号？
这有什么特殊意义吗？

[FlagsAttribute]
public enum DependencyPropertyOptions : byte
{
           Default = 1,
           ReadOnly = 2,
           Optional = 4,
           DelegateProperty = 32,
           Metadata = 8,
           NonSerialized = 16,
}

Answer 1

没有什么特别的意思，就是编译器的工作方式，主要是这个原因:

[FlagsAttribute]
public enum DependencyPropertyOptions : byte
{
           Default = 1,
           ReadOnly = 2,
           Optional = 4,
           DelegateProperty = 32,
           Metadata = 8,
           NonSerialized = 16,
           //EnumPropertyIWantToCommentOutEasily = 32
}

根据评论请求:此信息直接来自 C# Specification (Page 355/Section 17.7)

Like Standard C++, C# allows a trailing comma at the end of an array-initializer. This syntax provides flexibility in adding or deleting members from such a list, and simplifies machine generation of such lists.