Question

我使用WebClient.DownloadFile（address，fileName）类下载一个文件。

我用秒表计算下载速度。

我的速度计算代码；

Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
labelSpeed.Text = string.Format("{0} kB/s", (e.BytesReceived / 1024 / stopWatch.Elapsed.TotalSeconds).ToString("0.00"));

我想显示下载速度“ b / s，kb / s，mb / s，gb / s等...”格式，但是我的代码仅提供“ kb / s”格式。如何显示其他格式？

Answer 1

您可以使用Enum来避免克隆显示代码。这里是一个例子：

enum ByteMassFactor { B = 1, KB = 1024, MB = 1024 * 1024, GB = 1024 * 1024 * 1024 }

void Main()
{
    var byteCount = 2048;

    foreach (var mass in Enum.GetValues(typeof(ByteMassFactor)).Cast<ByteMassFactor>().Reverse())
        if (byteCount / (int)mass >= 1)
        {
            Console.WriteLine($"{byteCount / (int)mass} {mass}");
            break;
        }
}

输出：

2 KB

Answer 2

好的，我现在仅通过这种方式就解决了我的问题；

Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();

string downloadSpeed;

downloadSpeed = string.Format("{0} B/s", (e.BytesReceived / stopWatch.Elapsed.TotalSeconds).ToString("0.00"));
if ((e.BytesReceived / stopWatch.Elapsed.TotalSeconds) > 1024)
{ downloadSpeed = string.Format("{0} KB/s", (e.BytesReceived / 1024 / stopWatch.Elapsed.TotalSeconds).ToString("0.00")); }
if ((e.BytesReceived / 1024 / stopWatch.Elapsed.TotalSeconds) > 1024)
{ downloadSpeed = string.Format("{0} MB/s", (e.BytesReceived / 1024 / 1024 / stopWatch.Elapsed.TotalSeconds).ToString("0.00")); }
if ((e.BytesReceived / 1024 / 1024 / stopWatch.Elapsed.TotalSeconds) > 1024)
{ downloadSpeed = string.Format("{0} GB/s", (e.BytesReceived / 1024 / 1024 / 1024 / stopWatch.Elapsed.TotalSeconds).ToString("0.00")); }

labelSpeed.Text = downloadSpeed;

秒表下载速度与其他速度格式一起计算

2 个答案: