C＃模數計數

Question

美好的一天，

我正在編寫一個應用程序，用於下載30MB以上的文件。 我跟蹤當前已下載了多少字節。

我的問題是：

我想確定何時超過1M，2M，3M等。

我的邏輯是：

int totalFileSave = 0;
...
...
int bytesRead = responseStream.Read(buffer, 0, 4096);
totalFileSave += bytesRead;

while (bytesRead > 0) {
    // How do I test when I hit 1M, 2M, 3M and so forth...
    bytesRead = responseStream.Read(buffer, 0, 4096);
    totalFileSave += bytesRead;
}

Answer 1

private const int MEGABYTE = 1024 * 1024;

if ((bytesRead % MEGABYTE) == 0)
{
    // Do something...
}

Answer 2

這樣的事情怎么樣：

private const int megaByte = 1024 * 1024;
private int current = 0;

while (bytesRead > 0) 
{
    bytesRead = responseStream.Read(buffer, 0, 4096);
    totalFileSave += bytesRead;

    int total = bytesRead / megaByte;

    if (total > current)
    {
        current = total;
        // you went up 1 M and are now at or greater than 'current'M
    }
}