取枚举值和枚举名几种方法效率测试
测试代码
private static void Test2(int count)
{
int a = 0, b = 0;
string c=string.Empty, d=string.Empty;
DateTime dt1 = DateTime.Now;
for (int i = 0; i < count; i++)
{
a = (int)SystemUserRole.教师;
//Console.WriteLine(i + "\t(int):" + a);
}
DateTime dt2 = DateTime.Now;
DateTime dt3 = DateTime.Now;
for (int i = 0; i < count; i++)
{
b = SystemUserRole.教师.GetHashCode();
//Console.WriteLine(i + "\tGetHashCode():" + b);
}
DateTime dt4 = DateTime.Now;
DateTime dt5 = DateTime.Now;
for (int i = 0; i < count; i++)
{
c = SystemUserRole.教师.ToString();
//Console.WriteLine(i + "\tToString():" + SystemUserRole.教师.ToString());
}
DateTime dt6 = DateTime.Now;
DateTime dt7 = DateTime.Now;
for (int i = 0; i < count; i++)
{
d = Enum.GetName(typeof(SystemUserRole), (int)SystemUserRole.教师);
//Console.WriteLine(i + "\tEnum.GetName:" + Enum.GetName(typeof(SystemUserRole), (int)SystemUserRole.教师));
}
DateTime dt8 = DateTime.Now;
Console.WriteLine(a+"\t强制转换枚举值执行时长：" + (dt2 - dt1).ToString());
Console.WriteLine(b+"\tGetHashCode()取枚举值执行时长：" + (dt4 - dt3).ToString());
Console.WriteLine(c+"\tToString()取枚举名执行时长：" + (dt6 - dt5).ToString());
Console.WriteLine(d+"\tEnum.GetName取枚举名执行时长：" + (dt8 - dt7).ToString());
Console.Read();
}枚举代码 /// <summary>
/// 系统用户角色
/// </summary>
public enum SystemUserRole
{
超级管理员 = 1,
视频筛选员 = 2,
琴行 = 3,
教师 = 4,
求职用户 = 5,
学员 = 6,
测试用户 = 7
} 调用代码 static void Main(string[] args)
{
//NewMethod();
int count = 100000000;
//Test1(count / 1000); //太大了时间太长
Test2(count);
} 执行结果
