时间比对，常用细节记录

static void Main(string[] args)
{
DateTime startTime = DateTime.Now;

string userName = "用户a";
string setInfo = "当前的访问者是：" + userName;

DateTime endTime = DateTime.Now;
TimeSpan midTime = endTime - startTime;

string requireTime = string.Format(",当前请求的时间是：{0}小时{1}分{2}秒{3}毫秒!", midTime.Hours, midTime.Minutes, midTime.Seconds, midTime.Milliseconds);

Console.WriteLine(setInfo + requireTime);
Console.Read();
}