相关疑难解决方法(0)

MSDN上的这篇文章指出,您可以根据需要使用尽可能多的try catch块,并且不会产生任何性能成本,因为不会引发任何实际异常.
因为我总是认为即使没有抛出异常,try-catch总是会受到很小的性能影响,所以我做了一点测试.

 private void TryCatchPerformance()
        {
            int iterations = 100000000;

            Stopwatch stopwatch = Stopwatch.StartNew();
            int c = 0;
            for (int i = 0; i < iterations; i++)
            {
                try
                {
                   // c += i * (2 * (int)Math.Floor((double)i));
                    c += i * 2;
                }
                catch (Exception ex)
                {
                    throw;
                }
            }
            stopwatch.Stop();
            WriteLog(String.Format("With try catch: {0}", stopwatch.ElapsedMilliseconds));

            Stopwatch stopwatch2 = Stopwatch.StartNew();
            int c2 = 0;
            for (int i = 0; i < iterations; i++)
            {
              //  c2 …