F＃和AzureStorage GetBlobContainer

Question

Has anyone used the WindowsAzure.Storage NuGet package in a F# project? I am trying to upload a photo to Azure storage using this code:

member this.InsertPhotoImage(photoImage: PhotoImage) =
    let storageAccount = CloudStorageAccount.Parse(connectionString)
    let blobClient = storageAccount.CreateCloudBlobClient()
    let container = this.GetBlobContainer(blobClient) 
    let photoUri = this.GetPhotoImageUri(photoImage.UniqueId)
    let blockBlob = container.GetBlockBlobReference(photoUri) 
    use memoryStream = new MemoryStream(photoImage.ImageBytes)
    blockBlob.UploadFromStream(memoryStream)

and I am getting this exception on the container.GetBlockBlobReference and blockBlob.UploadFromStream lines: Lookup on object of indeterminate type based on information prior to this program point.

When I do an explicit cast like this on this line

    let container = this.GetBlobContainer(blobClient) :> CloudBlobContainer

It compiles but I get this warning:

The type 'CloudBlobContainer' does not have any proper subtypes and need not be used as the target of a static coercion

Thanks in advance

Answer 1

OK, it is a problem with me and the step-down rule

I need to create the helper functions (in this case GetBlobContainer) BEFORE using them.