C# Code Required - Download MSAzure Blobs - Quick, Easy

This is for a Windows Universal app. I need a short C# code snippet to download ALL blobs FROM a single MS Azure container TO my local drive. The code can NOT use the [login to view URL] nuget package as that package does not work in win universal apps. Hopefully someone already has suitable code and can simply copy>paste it for me involving no work. The example code I have attached is being used with no problem in a Windows C# Console app. I have also attached an image of this code copied across to my Windows Universal app showing the squiggly error lines. It does NOT work in my Windows Universal app. I need someone to provide the code that will work in my Win Universal app. I have removed my filestore details and access key from the attached for obvious reasons. I will release payment to the successful bidder after I have checked that the code works.