显示上传到 Azure BLOB 的进度

Question

以下代码演示了将文件上传到 Azure BLOB。因此，我将上传较大的文件，由于带宽问题，我有上传失败的风险（在SO 中讨论）。

以下代码可以正常工作，但我需要一种以百分比的形式向最终用户显示上传进度的方法。如何修改我的代码以使其成为可能？

BlobUploadOptions op = new BlobUploadOptions
{
    TransferOptions = new StorageTransferOptions
    {
        MaximumTransferSize = 4 * 1024 * 1024,
        InitialTransferSize = 4 * 1024 * 1024,
        MaximumConcurrency= 5
     },
     HttpHeaders = new BlobHttpHeaders
     {
        ContentType = request.Request.ContentType
     }
};

Azure.Response<BlobContentInfo> ci = await 
   blobClient.UploadAsync(fileStream, op);

Answer 1

请尝试以下方法：

//Define a progress handler.
class MyProgressHandler : IProgress<long>
{
    public void Report(long value)
    {
        //Do something to report the progress. I am simply printing the bytes uploaded.
        Console.WriteLine($"Bytes uploaded: {value}");
    }
}

//Use the progress handler in your upload options.
BlobUploadOptions op = new BlobUploadOptions
{
    TransferOptions = new StorageTransferOptions
    {
        MaximumTransferSize = 4 * 1024 * 1024,
        InitialTransferSize = 4 * 1024 * 1024,
        MaximumConcurrency= 5
     },
     HttpHeaders = new BlobHttpHeaders
     {
        ContentType = request.Request.ContentType
     },
     ProgressHandler = new MyProgressHandler()
};