我可以使用另一种方法来在上传文件期间获取“写入的字节数”或类似的东西吗？我想要一个进度，这是写入数据的实际进度，还是使用此类和方法不可能？如果没有，要研究的路线是什么？
谢谢。
基本示例：
if(FileUpload1.HasFile)
{
savePath += FileUplaod1.FileName;
FileUpload1.SaveAs(savePath); /// Here is where I want to do a stream or some way to grab
//bytes written so I can do an async on it and show the progress, not wait until it is copleted, and then show a label status of "completed". Doing this for a form that has to be non-html5 compatibale. That is why I am not using a different method.
}