我做了如下↓
之类的测试1)创建一个客户枚举(从一周开始复制)
[Serializable]
public enum Tester
{
// 概要:
// Indicates Sunday.
Sunday = 0,
//
// 概要:
// Indicates Monday.
Monday = 1,
//
// 概要:
// Indicates Tuesday.
Tuesday = 2,
//
// 概要:
// Indicates Wednesday.
Wednesday = 3,
//
// 概要:
// Indicates Thursday.
Thursday = 4,
//
// 概要:
// Indicates Friday.
Friday = 5,
//
// 概要:
// Indicates Saturday.
Saturday = 6,
}
2)创建两种测试方法......
static void TestEnumToString()
{
var t = Tester.Sunday;
Enumerable.Range(0, 1000000).ToList().ForEach(i => t.ToString());
}
static void DayOfWeekEnumToString()
{
var t = DayOfWeek.Sunday;
Enumerable.Range(0, 1000000).ToList().ForEach(i => t.ToString());
}
3)主要方法
static void Main()
{
Stopwatch sw = new Stopwatch();
sw.Start();
TestEnumToString();
sw.Stop();
Console.WriteLine("Tester:" + sw.ElapsedMilliseconds);
sw = new Stopwatch();
sw.Start();
DayOfWeekEnumToString();
sw.Stop();
Console.WriteLine("DayOfWeek:" + sw.ElapsedMilliseconds);
Console.ReadKey();
}
4)结果:
Tester : 3164ms
DayOfWeek : 7032ms
我真的不知道为什么系统类型枚举比客户枚举类型慢.... 谁能告诉我为什么? 谢谢......
更新编辑: 将[ComVisible(true)]添加到枚举。
[ComVisible(true)]
[Serializable]
public enum Tester
{
Sunday = 0,
Monday = 1,
Tuesday = 2,
Wednesday = 3,
Thursday = 4,
Friday = 5,
Saturday = 6,
}
结果:
Tester : 5018ms
DayOfWeek : 7032ms
系统枚举类型仍然比客户枚举类型慢......
答案 0 :(得分:1)
如果要将苹果与苹果进行比较,则应添加[ComVisible(true)]
属性。
答案 1 :(得分:1)
Enum可以使用[ComVisible(true)]或[Flags]进行装饰,每次更改测试结果时都可以。
[Serializable]
//[Flags]
[ComVisible(true)]
public enum Tester
{
// 概要:
// Indicates Sunday.
Sunday = 0,