.NET Tips and Tricks

Blog archive

When the Watch Window in Visual Studio Doesn't Update

While debugging in Visual Studio, you may notice, when you check some value in the Watch window, one of two icons beside your data. You may get one or the other of a circle with two wavy lines inside of it or the standard refresh icon of two curved arrows chasing each other. Either icon indicates that the data being displayed in the Watch window isn't up to date.

There are two reasons for these icons appearing: Either there's been a problem in fetching the data (e.g. a timeout) or Visual Studio is concerned that evaluating the expression may result in some side-effects that will make debugging more difficult for you.

It's lovely that you get that warning but, if you've noticed the icons then it's probably because you're checking the value and, if you're checking the value then it's probably because you need that value. Clicking the icon will force Visual Studio to make another attempt at giving you the latest version of the data you want.

If you can't get the data you want (or if it turns out that Visual Studio was right and re-evaluating the expression really did make your life more difficult) then your best option is to set a breakpoint a line or two earlier and re-run your test.

Posted by Peter Vogel on 01/09/2019 at 8:34 AM


comments powered by Disqus

Featured

  • Death of the Dev Machine?

    Here's a takeaway from this week's Ignite 2020 event: An advanced Azure cloud portends the death of the traditional, high-powered dev machine packed with computing, memory and storage components.

  • COVID-19 Is Ignite 2020's Elephant in the Room: 'Frankly, It Sucks'

    As in all things of our new reality, there was no escaping the drastic changes in routine caused by the COVID-19 pandemic during Microsoft's big Ignite 2020 developer/IT pro conference, this week shifted to an online-only event after drawing tens of thousands of in-person attendees in years past.

  • Visual Studio 2019 v16.8 Preview Update Adds Codespaces

    To coincide with the Microsoft Ignite 2020 IT pro/developer event, the Visual Studio dev team shipped a new update, Visual Studio 2019 v16.8 Preview 3.1, with the main attraction being support for cloud-hosted Codespaces, now in a limited beta.

  • Speed Lines Graphic

    New for Blazor: Azure Static Web Apps Support

    With Blazor taking the .NET web development world by storm, one of the first announcements during Microsoft's Ignite 2020 developer/IT event was its new support in Azure Static Web Apps.

  • Entity Framework Core 5 RC1 Is Feature Complete, Ready for Production

    The first release candidate for Entity Framework 5 -- Microsoft's object-database mapper for .NET -- has shipped with a go live license, ready for production.

Upcoming Events