category dropdown seems not working

[MarkyCSVGit]

Hello Gill, I hope you're doing well and safe.
I follow you're tutorial for my own project and I'm using asp.net core 2.2
I was just wondering why the category dropdown seems not able to work using Tag helper.

see attached screenshot

[jgess1]

Same issue for me too, on using asp.net core 3.0.

In VS 2019, the "Index" in the Default.cshtml says it "Cannot resolve action 'Index'.

[jgess1]

It looks like the issue is with the Bootstrap files used locally in the project. When I linked to the external sources the drop down worked correctly.

Put this in your _Layout.cshtml file instead of pointing to the local jquery and bootstrap:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>