显示上传到 Azure BLOB 的进度

如何解决显示上传到 Azure BLOB 的进度

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，因此可能会因为带宽问题而导致上传失败（在 SO 中讨论）。

以下代码工作正常，但我需要一种方法以百分比的形式向最终用户显示上传进度。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);

解决方法

请尝试以下操作：

//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()
};