How to upload file to blob container?

Question

I am trying to learn how to use blobs. With this code I want to upload my text file. I do not get errors. All that hapens is that the file is not found in the container. And I have read previous similar questions but none used this method.

What am I missing here?

using Azure.Storage.Blobs;
using System.IO;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            Upload_it_Async();
        }

        private static async void Upload_it_Async()
        {

        var filepath = @"C:\my_file.txt";
        var connectionString = ***********;
        var containerName = "my_container";

        BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString);
        var container = blobServiceClient.GetBlobContainerClient(containerName);
        var blockBlob = container.GetBlobClient("my_file.txt");
        using (FileStream fs = File.Open(filepath, FileMode.Open))
        {
            await blockBlob.UploadAsync(fs);
        }
    }
}
}

" I do not get errors." You probably do, you just cannot "see" them. Use async Task instead of async void and try this: Upload_it_Async().GetAwaiter().GetResult(); for a start. Then you should get exceptions. — Fildor
– Fildor, Commented Mar 30, 2020 at 9:12

Oliver · Accepted Answer · 2020-03-30 09:13:41Z

2

It looks like you need to wait for that task to complete:

static void Main(string[] args)
{
    Upload_it_Async().Wait();
}

//Change the method to Task, not void:
private static async Task Upload_it_Async()
...

See this link for more discussion around async usage in console applications.

As noted in the comments, doing this will ensure any exceptions are thrown in your Main method.

edited Mar 30, 2020 at 9:13

answered Mar 30, 2020 at 9:06

Oliver

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Comments

JUstLearning · Accepted Answer · 2020-03-31 10:20:21Z

-1

Suggest use below code snippet.

static async Task Main(string[] args)
{
  await Upload_it_Async();
}

private static async Task Upload_it_Async()

And here are two good Azure StorageBlob Samples you can take a reference. And if you have any questions about Azure Storage, please be free let me know.

sample1

sample2

answered Mar 31, 2020 at 10:20

JUstLearning

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