Azure Blob Storage Get File URL and Permission

azure-storage-blob-get-file-url-and-permission.cs

            var connsctionString = "your_connection_string";
            var cloudStorage = Microsoft.WindowsAzure.Storage.CloudStorageAccount.Parse(connsctionString);

            var cloudBlobClient = cloudStorage.CreateCloudBlobClient();
            var cloudBlobContainer = cloudBlobClient.GetContainerReference("donmablogsample");
            var resultCreateContainer = cloudBlobContainer.CreateIfNotExistsAsync().Result;

            Console.WriteLine("donmablogsample create already.");
       
            // 設定可以開啟 60 秒，並且此簽章只能夠讀取
            var sharedPolicy = new Microsoft.WindowsAzure.Storage.Blob.SharedAccessBlobPolicy()
            {
                SharedAccessExpiryTime = DateTime.UtcNow.AddSeconds(60),
                Permissions = Microsoft.WindowsAzure.Storage.Blob.SharedAccessBlobPermissions.Read,

            };


            var sasContainerToken = cloudBlobContainer.GetSharedAccessSignature(sharedPolicy, null);

            Microsoft.WindowsAzure.Storage.Blob.CloudBlobDirectory cloudBlobDirectory =
               cloudBlobContainer.GetDirectoryReference("TEST2/TEST21/");
            var uri = cloudBlobDirectory.GetBlockBlobReference("sampleText9.json").Uri;


            Console.WriteLine("TEST2/TEST21/sampleText9.json Download Uri =>" + uri + sasContainerToken);

            //這一行非必要 ，呼叫系統瀏覽器開始網址而已
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo("cmd", $"/c start " + uri + sasContainerToken.Replace("&", "^&")) { CreateNoWindow = true });