Improve error handling

[0x5bfa]

⏱️ Before you start

• Have you checked if a similar PR has already been requested?
• Have you built and ran the app?

↗️ Related/Fixed issues

None

📄 Description

As the title

💭 Motivation and Context

• Improve exception handling
• Aggregate all async tasks into one async task so that they can be caught wherever exceptions occur.
• Add new exception display page
• Add new exception details dialog

Applied on:

• User pages
• Repository pages
• Home pages
• Organization pages

Clean up:

• Clean-up

📸 Assets (if appropriate):

[Lamparter]

@onein528 What on earth did you do b506654 for?

[Lamparter]

@onein528 What on earth did you do b506654 for?

It breaks the search system.

[0x5bfa]

WHAT? No I didn't break any feature. Look at it carefully. I created some duplicated attribution by main fetching. So I deleted them.

[0x5bfa]

More information:

[Lamparter]

Ahh. Sorry.

[0x5bfa]

You can see nicer error page! Just try it out.

[Lamparter]

I ABSOLUTELY LOVE THIS

I will fix the spelling. Good work, @onein528! 😄

[Lamparter]

BTW @onein528 Please use strings from now on.
I will localise this.

[0x5bfa]

OK! Thanks. I also will.

[Lamparter]

@onein528 I'd set a custom title bar element like in SignIn so the profile/home/explore/tabview etc. are hidden.

[0x5bfa]

Almost of all exceptions are not recoverable. But network disconnection exception titled 'An error occurred while sending the request' is recoverable and general exception error. I think the app should provide page as it is to restart immediately whenever network is back for user by clicking 'Try Again'. Yes design issue I know but this could be functional issue.

[Lamparter]

Almost of all exceptions are not recoverable. But network disconnectio exception titled 'An error occurred while sending the request' is reconverable and general exception error. I think the app should provide page as it is to restart immediately whenever network is back for user. Yes design issue I know but this could be functional issue.

But we still have a 'refresh' button. @onein528

[0x5bfa]

Let it be clear. clicking 'Try Again', that left-side navigation view will be back?

[Lamparter]

Let it be clear. clicking 'Try Again', that left-side navigation view will be back?

Yep. But only if the error is resolved after clicking 'Try Again' ofc. @onein528

[0x5bfa]

Good. I'll try to do that.

[0x5bfa]

Why did you reset label from high pri to medium pri?

[Lamparter]

Why did you reset label from high pri to medium pri?

Why so high priority? @onein528

[0x5bfa]

High: Must be
Med: Should be
Low: Could be

Committed.

[0x5bfa]

@DeveloperWOW64 can you see UserControls/Overview/RepositoryOverview.xaml and it's inside Stargizer count badge and it's converter? It is way better than previous converter as helper methods. What do you think?

[0x5bfa]

What's New

Updated pinned issues block UI

[ioapiset]

LGTM.