使用.net 的stopWatch 类来剖析你的代码执行时间

System.Diagnostics.Stopwatch timerObj = new System.Diagnostics.Stopwatch();
timer.Start();
Decimal totalDec = 0;
int limit = 1000000;
for (int i = 0; i < limit; ++i)
{
totalDec = totalDec + (Decimal)Math.Sqrt(i);
}
timerObj.Stop();
Console.WriteLine(“平方根和 {0}”,totalDec);
Console.WriteLine(“秒数: {0}”,
timerObj.ElapsedMilliseconds);
Console.WriteLine(“时间: {0}”, timerObj.Elapsed);

class AutoStopwatchDemo : System.Diagnostics.Stopwatch, IDisposable
{
public AutoStopwatchDemo()
{
Start();
}
public void Dispose()
{
Stop();
Console.WriteLine(“时间 : {0}”, this.Elapsed);
}
}

using (new AutoStopwatchDemo())
{
Decimal totalObj2 = 0;
int limitObj2 = 1000000;
for (int i = 0; i < limit2; ++i)
{
totalObj2 = limitObj2  + (Decimal)Math.Sqrt(i);
}
}