Marek Fišera
@mara.neptuo.com
Engineer @microsoft.com working on .NET on WebAssembly & Blazor
Also github.com/maraf & twitter.com/marekfisera
Also github.com/maraf & twitter.com/marekfisera
Reposted by Marek Fišera
One thing I started noticing recently is that competent engineers give up their credibility due to AI.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
November 15, 2025 at 12:40 AM
One thing I started noticing recently is that competent engineers give up their credibility due to AI.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
Reposted by Marek Fišera
Danny Moerkerke - The State Of PWAs
YouTube video by Frontendisti
youtu.be
November 12, 2025 at 3:17 PM
Reposted by Marek Fišera
New blog post:
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
How to Quickly Test Your Blazor App on a Real Smartphone
Using Dev Tunnels to Access Your Development App from Your Phone via the...
dev.to
November 10, 2025 at 8:53 AM
New blog post:
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
Reposted by Marek Fišera
Hey #dotnet, would you like it if #msbuild (and dotnet build, etc) natively integrated with your CI/CD pipelines for integrated warning/error reporting and such? I've vibe-coded some stuff here that might be interesting to folks: github.com/dotnet/msbui...
November 8, 2025 at 5:20 PM
Hey #dotnet, would you like it if #msbuild (and dotnet build, etc) natively integrated with your CI/CD pipelines for integrated warning/error reporting and such? I've vibe-coded some stuff here that might be interesting to folks: github.com/dotnet/msbui...
Reposted by Marek Fišera
Kubernetes is the sum of all the shell scripts, and practices, system administrators have cobbled together over time, presented as a single system behind a declarative set of APIs.
November 6, 2025 at 1:11 PM
Kubernetes is the sum of all the shell scripts, and practices, system administrators have cobbled together over time, presented as a single system behind a declarative set of APIs.
November 5, 2025 at 7:33 PM
Reposted by Marek Fišera
Reposted by Marek Fišera
We have progressed from data collection to data analysis.
November 1, 2025 at 12:31 AM
We have progressed from data collection to data analysis.
Reposted by Marek Fišera
GeoBlazor 4.3 Is Here! Smarter Auth and Powerful New Layers!
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
🚀 GeoBlazor 4.3 Is Here with Smarter Auth and Powerful New Layers!
GeoBlazor 4.3 introduces smarter authentication, new layer views, and powerful enhancements for developers. Upgrade now for a seamless mapping experience.
hubs.li
October 19, 2025 at 4:41 AM
GeoBlazor 4.3 Is Here! Smarter Auth and Powerful New Layers!
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
Reposted by Marek Fišera
🚀 Uno Platform 6.3 is LIVE
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
October 9, 2025 at 2:56 PM
🚀 Uno Platform 6.3 is LIVE
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
Reposted by Marek Fišera
🚀 Blazing Story v1.0.0 Preview 60 is here!
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
GitHub - jsakamoto/BlazingStory: The clone of "Storybook" for Blazor, a frontend workshop for building UI components and pages in isolation.
The clone of "Storybook" for Blazor, a frontend workshop for building UI components and pages in isolation. - GitHub - jsakamoto/BlazingStory: The clone of "Storybook" for Blaz...
github.com
October 1, 2025 at 12:40 PM
🚀 Blazing Story v1.0.0 Preview 60 is here!
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
Reposted by Marek Fišera
.NET 10 includes several performance enhancements.
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET
September 16, 2025 at 1:10 PM
.NET 10 includes several performance enhancements.
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET
Reposted by Marek Fišera
HAPPENING LIVE @10AM PT today〰️
...drop in to check out the cool new features that superstar Blazor intern, Roland Vizner, has been hard at work on this summer, including a new component for handling images and other media files.
See you live here ➡️ msft.it/63328s5rKw
...drop in to check out the cool new features that superstar Blazor intern, Roland Vizner, has been hard at work on this summer, including a new component for handling images and other media files.
See you live here ➡️ msft.it/63328s5rKw
September 9, 2025 at 1:20 PM
HAPPENING LIVE @10AM PT today〰️
...drop in to check out the cool new features that superstar Blazor intern, Roland Vizner, has been hard at work on this summer, including a new component for handling images and other media files.
See you live here ➡️ msft.it/63328s5rKw
...drop in to check out the cool new features that superstar Blazor intern, Roland Vizner, has been hard at work on this summer, including a new component for handling images and other media files.
See you live here ➡️ msft.it/63328s5rKw
Reposted by Marek Fišera
There are three sets of those. This is tge only set not perfectly aligned. 😖
September 4, 2025 at 2:52 PM
There are three sets of those. This is tge only set not perfectly aligned. 😖
Reposted by Marek Fišera
OMFG @madskristensen.net I'M INSTALLING THIS ASAP
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
Keyboard Hero - Visual Studio Marketplace
Extension for Visual Studio - Shows you what keyboard shortcuts you would benefit the most from learning based on your usage of Visual Studio
marketplace.visualstudio.com
August 28, 2025 at 2:09 AM
OMFG @madskristensen.net I'M INSTALLING THIS ASAP
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
Reposted by Marek Fišera
Next week at Microsoft Prague, we prepared .NET Meetup with 3 cool talks, coffee and pizza 🍕:
- .NET OCR & Computer Vision
- Log Sampling in .NET
- C# source generators
Entry is free of course.
Details: www.meetup.com/microsoft-ev...
#dotnet #prague
- .NET OCR & Computer Vision
- Log Sampling in .NET
- C# source generators
Entry is free of course.
Details: www.meetup.com/microsoft-ev...
#dotnet #prague
Talk .NET with .NET Team: September Edition, Wed, Sep 3, 2025, 5:30 PM | Meetup
After a short summer break 🌞, our **Talk .NET with .NET team** **meetup series** is back with its **September edition**! 🚀 We’ve got fresh topics, hands-on knowledge, and
www.meetup.com
August 27, 2025 at 1:34 PM
Next week at Microsoft Prague, we prepared .NET Meetup with 3 cool talks, coffee and pizza 🍕:
- .NET OCR & Computer Vision
- Log Sampling in .NET
- C# source generators
Entry is free of course.
Details: www.meetup.com/microsoft-ev...
#dotnet #prague
- .NET OCR & Computer Vision
- Log Sampling in .NET
- C# source generators
Entry is free of course.
Details: www.meetup.com/microsoft-ev...
#dotnet #prague
Reposted by Marek Fišera
ArgumentOutOfRangeException? A more descriptive exception could be DepositAmountMustBePositiveException. 💰
Learn how to do this in C# in this post from Scott: https://blog.nimblepros.com/blogs/the-value-of-custom-exceptions/
#dotnet #exceptions
Learn how to do this in C# in this post from Scott: https://blog.nimblepros.com/blogs/the-value-of-custom-exceptions/
#dotnet #exceptions
August 25, 2025 at 12:45 PM
ArgumentOutOfRangeException? A more descriptive exception could be DepositAmountMustBePositiveException. 💰
Learn how to do this in C# in this post from Scott: https://blog.nimblepros.com/blogs/the-value-of-custom-exceptions/
#dotnet #exceptions
Learn how to do this in C# in this post from Scott: https://blog.nimblepros.com/blogs/the-value-of-custom-exceptions/
#dotnet #exceptions
Reposted by Marek Fišera
My #blazor dropzone component has now support for multiple files
Check it out at www.nuget.org/packages/Sup...
Try it here: nikpiermafrost.github.io/SuperSimpleB...
Check it out at www.nuget.org/packages/Sup...
Try it here: nikpiermafrost.github.io/SuperSimpleB...
SuperSimpleBlazorDropzone 1.1.0
Package Description
www.nuget.org
August 25, 2025 at 6:49 AM
My #blazor dropzone component has now support for multiple files
Check it out at www.nuget.org/packages/Sup...
Try it here: nikpiermafrost.github.io/SuperSimpleB...
Check it out at www.nuget.org/packages/Sup...
Try it here: nikpiermafrost.github.io/SuperSimpleB...
Reposted by Marek Fišera
What happens when you step into the 𝐁𝐥𝐚𝐳𝐨𝐫 𝐌𝐮𝐥𝐭𝐢𝐯𝐞𝐫𝐬𝐞? 🪐 New frameworks, new possibilities, and a whole new way to build modern apps 🌍
⚡ On our YouTube channel, @codewithanjuli.bsky.social takes you on a deep dive into #Blazor www.youtube.com/watch?v=LSpm...
#DotNet #WebDevelopment
⚡ On our YouTube channel, @codewithanjuli.bsky.social takes you on a deep dive into #Blazor www.youtube.com/watch?v=LSpm...
#DotNet #WebDevelopment
Anjuli Jhakry | The Blazor Multiverse: get to know the different Blazor frameworks
YouTube video by Update Conference
www.youtube.com
August 22, 2025 at 7:41 AM
What happens when you step into the 𝐁𝐥𝐚𝐳𝐨𝐫 𝐌𝐮𝐥𝐭𝐢𝐯𝐞𝐫𝐬𝐞? 🪐 New frameworks, new possibilities, and a whole new way to build modern apps 🌍
⚡ On our YouTube channel, @codewithanjuli.bsky.social takes you on a deep dive into #Blazor www.youtube.com/watch?v=LSpm...
#DotNet #WebDevelopment
⚡ On our YouTube channel, @codewithanjuli.bsky.social takes you on a deep dive into #Blazor www.youtube.com/watch?v=LSpm...
#DotNet #WebDevelopment
Reposted by Marek Fišera
In .NET10 we are rolling out new dotnet test experience for Microsoft.Testing.Platform. I worked on the outputs together with Mariam and other folks in our team. Here is where we ended up. Hope you like it :)
devblogs.microsoft.com/dotnet/dotne...
#dotnet #microsofttestingplatform
devblogs.microsoft.com/dotnet/dotne...
#dotnet #microsofttestingplatform
Enhance your CLI testing workflow with the new dotnet test - .NET Blog
Learn how .NET 10 transforms dotnet test with native Microsoft.Testing.Platform integration, delivering better performance and enhanced diagnostics.
devblogs.microsoft.com
August 22, 2025 at 1:21 PM
In .NET10 we are rolling out new dotnet test experience for Microsoft.Testing.Platform. I worked on the outputs together with Mariam and other folks in our team. Here is where we ended up. Hope you like it :)
devblogs.microsoft.com/dotnet/dotne...
#dotnet #microsofttestingplatform
devblogs.microsoft.com/dotnet/dotne...
#dotnet #microsofttestingplatform
Reposted by Marek Fišera
Aspire is at version 9.4.1 now. That's the only supported version. If you're using an older version, update now. You must update to the latest version to be in support & get the awesome new features. What are you waiting for?
learn.microsoft.com/dotnet/aspir...
#dotnet
learn.microsoft.com/dotnet/aspir...
#dotnet
What's new in .NET Aspire 9.4 - .NET Aspire
Learn what's new in the official general availability release of .NET Aspire 9.4.
learn.microsoft.com
August 21, 2025 at 1:18 AM
Aspire is at version 9.4.1 now. That's the only supported version. If you're using an older version, update now. You must update to the latest version to be in support & get the awesome new features. What are you waiting for?
learn.microsoft.com/dotnet/aspir...
#dotnet
learn.microsoft.com/dotnet/aspir...
#dotnet
Reposted by Marek Fišera
Discover how to run .NET applications directly in the browser without using Blazor. This approach opens new possibilities for web development, optimizing performance and enhancing user experience.#dotnet#aspnet
https://isaacl.dev/gpu
August 18, 2025 at 7:00 PM
Discover how to run .NET applications directly in the browser without using Blazor. This approach opens new possibilities for web development, optimizing performance and enhancing user experience.#dotnet#aspnet
https://isaacl.dev/gpu
Reposted by Marek Fišera
Blogged: Running .NET in the browser without Blazor
andrewlock.net/running-dotn...
In this post I show how to run .NET in your browser without using Blazor, and instead rely on lower-level abstractions provided by [JSImport] and [JSExport]
#dotnet #aspnetcore #wasm #webassembly
andrewlock.net/running-dotn...
In this post I show how to run .NET in your browser without using Blazor, and instead rely on lower-level abstractions provided by [JSImport] and [JSExport]
#dotnet #aspnetcore #wasm #webassembly
Running .NET in the browser without Blazor
In this post I show how to run .NET in your browser without using Blazor, and instead rely on lower-level abstractions provided by [JSImport] and [JSExport]
andrewlock.net
August 12, 2025 at 4:04 PM
Blogged: Running .NET in the browser without Blazor
andrewlock.net/running-dotn...
In this post I show how to run .NET in your browser without using Blazor, and instead rely on lower-level abstractions provided by [JSImport] and [JSExport]
#dotnet #aspnetcore #wasm #webassembly
andrewlock.net/running-dotn...
In this post I show how to run .NET in your browser without using Blazor, and instead rely on lower-level abstractions provided by [JSImport] and [JSExport]
#dotnet #aspnetcore #wasm #webassembly
Reposted by Marek Fišera
this is a GREAT podcast, in which @simonwillison.net goes on and on and really nails where this LLM crap does amazing things (SQL OH MY) and where it really doesn't. go listen....
I loved it, as we had just launched github.com/microsoft/wa... to componentize and apply policy to mcp tools....
I loved it, as we had just launched github.com/microsoft/wa... to componentize and apply policy to mcp tools....
August 8, 2025 at 6:29 PM
this is a GREAT podcast, in which @simonwillison.net goes on and on and really nails where this LLM crap does amazing things (SQL OH MY) and where it really doesn't. go listen....
I loved it, as we had just launched github.com/microsoft/wa... to componentize and apply policy to mcp tools....
I loved it, as we had just launched github.com/microsoft/wa... to componentize and apply policy to mcp tools....
Reposted by Marek Fišera
Finally had time over the holidays to realize a long-standing dream of mine: a hex editor that knows about the PE file and .NET metadata format. You can click any byte and it will show you which data structure it is in the tree. Every byte is covered.
The parser is at github.com/KirillOsenko...
The parser is at github.com/KirillOsenko...
December 29, 2024 at 8:08 PM
Finally had time over the holidays to realize a long-standing dream of mine: a hex editor that knows about the PE file and .NET metadata format. You can click any byte and it will show you which data structure it is in the tree. Every byte is covered.
The parser is at github.com/KirillOsenko...
The parser is at github.com/KirillOsenko...