https://learn.microsoft.com/zh-tw/dotnet/api/azure.storage.blobs.specialized.blobbaseclient.downloadcontent?view=azure-dotnet
BlobBaseClient.DownloadContent Method (Azure.Storage.Blobs.Specialized) - Azure for .NET Developers...
The DownloadContent() operation downloads a blob from the service, including its metadata and properties. For more information, see Get Blob.
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