使用 C# 的 Azure Blob 存储“找不到方法”

Question

I have the folowing error when I apply the method GetBlockBlobReference() on a azure storage container. I can fetch this container using the Microsoft.WindowsAzure.Storage NuGet, I can also see al the methods when I navigate into this Nuget, but at the compilation some methods are not found.

System.Private.CoreLib: Exception while executing function: AffluenceFunction. GoogleAnalytics: Method not found: 'Void Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.UploadFromStream(System.IO.Stream, Microsoft.WindowsAzure.Storage.AccessCondition, Microsoft.WindowsAzure.Storage.Blob.BlobRequestOptions, Microsoft.WindowsAzure.Storage.OperationContext)'

On the internet everybody says "downgrade" the Azure Storage Nuget version but is not working. I have try with version 5, 6, 7 and even 9. Im using .NET Framework 4.7 as a class library who is called by a Function Project on version 2.

Some code (again the I can retreive the container):

    public void UploadFile( CloudBlobContainer container )
    {
        var filePathOnServer = Path.Combine("C:/temp/test/c.csv");

        using (var fileStream = File.OpenRead(filePathOnServer))
        {
            var filename = "c.csv"; // Trim fully pathed filename to just the filename
            var blockBlob = container.GetBlockBlobReference(filename);

            blockBlob.UploadFromStream(fileStream);
        }
    }

We use Azure Blob Storage excly the same way on other project (others version of .NET) and it work fine!

Thank you

Answer 1

Please install the latest blob storage nuget package: Microsoft.Azure.Storage.Blob, Version 10.0.3.

Install it both on the class library and the azure function.

I have a test with .net 4.7 class library and azure function v2, it works.

The reason is that, WindowsAzure.Storage NuGet version 9.3 or below for .net core does only supports async method, so for function v2(which is .net core) does not have a definition UploadFromStream() . But in Microsoft.Azure.Storage.Blob, Version 10.0.3 , it does support async and non-async method for .net core project.