.NET SDK Windows Form App

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.NET SDK Windows Form App

I have a Visual Studio 2017 .NET 4.5 Windows Forms App.  I need to upload large files (Ex 300MB) to Box.  I am using JWT and the method UploadUsingSessionAsync as documented.  I have run into issues when using a Windows Form App, or when using a Console app that utilizes a Form.  A Console App with no form works fine.

 

SDK 3.20 - AdminToken works, but UploadUsingSessionAsync hangs

SDK 3.22 - AdminToken hangs, but UploadUsingSessionAsync works

 

Has anyone successfully built a Windows Form App using JWT AdminToken and UploadUsingSessionAsync methods.  Any code examples or tips to troubleshoot this would be appreciated.