Upgraded the project to dotnet core 3.1.

[michaeldeongreen]

Purpose

• Upgraded the project to dotnet core 3.1.
• Removed unused namespaces in various files.
• Installed Newton.Json nuget package.

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone https://github.com/michaeldeongreen/azure-event-grid-viewer.git
cd azure-event-grid-viewer
git checkout michaeldeongreen/feature/dotnetcore-3

• Test the code

• Use the Deploy to Azure link to deploy the EventGrid Viewer to Azure
• Repo Url = https://github.com/michaeldeongreen/azure-event-grid-viewer.git
• Branch = michaeldeongreen/feature/dotnetcore-3
• Create a Storage Account
• Create an Event Subscription
  • Endpoint Type = Webhook
  • Endpoint Url = https://{{site-name}}.azurewebsites.net/api/updates
• Launch the EventGrid Viewer Web App
• Upload files to the Storage Account & ensure the EventGrid Viewer Web App displays EventGrid events

What to Check

Verify that the following are valid

• EventGrid Viewer works on dotnet 3.1

Other Information

[dbarkol]

lgtm, thank you!