System.Environment.TickCount 最大支持49.2天而已
超过了，系统则返回负数
关于开机时间
看MSDN
// Sample for the Environment.TickCount property.
// TickCount cycles between Int32.MinValue, which is a negative
// number, and Int32.MaxValue once every 49.8 days. This sample
// removes the sign bit to yield a nonnegative number that cycles
// between zero and Int32.MaxValue once every 24.9 days.
using System;
class Sample
{
public static void Main()
{
int result = Environment.TickCount & Int32.MaxValue;
Console.WriteLine( "TickCount: {0} ", result);
}
}
/*
This example produces the following results:
TickCount: 101931139
*/
微软的机子开一开还是要重启一下的。。。
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