Building controls with parameterized binding expressions in DotVVM

Recently, we got a question on our Gitter chat about building markup controls that use binding expressions. Basically, the requirement was to have a breadcrumb navigation control that would be used this way: <cc:Breadcrumb DataSource="{value: List

OBS shows only black screen for Display Capture or Video Device Capture

Recently, I got invited to speak at DotFest – a .NET developer conference in Novosibirsk. Due to the COVID pandemic, they had to make the event online, so the organizers set up a test call with me to make sure everything is working. During the ca

ASP.NET Core application keeps randomly signing users out in Azure App Service

Recently, we have been fighting with a weird issue that was happenning to one of our ASP.NET Core web apps hosted in Azure App Service. The app was using ASP.NET Core Identity with cookie authentication. Customers reported to us that the application

Playing with MSIX: Part 2–Using Azure DevOps

In the previous post, I described how to use Windows Packaging Project in Visual Studio to build a MSIX package manually. I also mentioned the difference between running the application normally (when your WPF/WinForms app project is marked as a sta

Playing with MSIX: Part 1–Introduction

For a few last years, my company was building mostly web applications. The demand for desktop applications was very low, and even though we had some use cases in which building a desktop app would be less costly, our customers preferred the web solut

Why I am so excited about Server-side ViewModel Caching in DotVVM

Few weeks ago, I got an idea to implement an interesting feature in DotVVM – the Server-side viewmodel caching. It can have a huge impact on a performance of DotVVM applications as it can reduce the data transferred on postback to almost nothing. In

Migrating ASP.NET Web Forms apps to .NET Core using DotVVM

Recently, I have written a series of articles on modernizing ASP.NET Web Forms apps. Now this topic became even more important thanks to the recent announcement of .NET 5. It was made clear that ASP.NET Web Forms will not be ported to .NET Core. TL

Coding & Streaming on Thursday

Recently, I have been doing a few live streams with Michal Altair Valasek, fellow MVP from the Czech Republic. We took his AskMe demo app which shows how to build a non-trivial web app in ASP.NET Core, and made a version built in DotVVM. These stre

Deleted Reddit post on Metric vs Imperial units

It has been a long time since I discovered this nice Reddit thread about Metric vs Imperial system. There was an amazing comment listing all kinds of ounces, barrels, gallons and other crazy stuff, but recently it got deleted. Thanks to Removeddit,

Building a device to record or live-stream my sessions

I have been speaking at various conferences and events for more than 10 years. Over the years, I tried several ways of recording my sessions. Most of the ways were just OK, but they were not 100% reliable, and it always bothered me when I did a confe

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