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65947 articles found

GitHub Copilot – Huge Quality Advancement in 3 months (June 2025)

After the appearance of the GitHub Copilot Agent, I decided to try it on my real-life ASP.NET8 project. I tried assisted coding and produced 5.300 lines of code, of which 95% was generated. There is a very, very big quality advancement in usability of this version compared to the version I tried 3 months ago.

1 day ago

Breaking changes in .NET build tools 8.0.0 to 8.0.11

After an upgrade to .NET 8.0.11, I started to get errors, and builds/applications failed. I was getting “hostpolicy.dll...not found” and “error MSB4018: … Could not find … singlefilehost.exe”.

1 day ago

NET8/EF8 Breaking Change. Old servers/databases might not understand queries from EF8.

In .NET8/EF8 when working with SQL Server, EF might create newer version SQL queries that old SQL servers/databases will not understand and will consider that as a Syntax Error. The solution is to synchronize Server and Client Compatibility levels.

1 day ago

Testing speed of modern External SSD backup

A practical test of the speed of the latest technology in External SSD devices and compare it to previously available technologies of External USB-based backup devices. Tests are done with real-life file sets and real commercial laptops used in typical company environments.

1 day ago

Entity Framework 9 - GroupBy throwing Exception

Regular usage of EF9 sometimes throws Exception "The given key 'EmptyProjectionMember' was not present in the dictionary". It seems that is related to the bug in EF9 related to the usage of GroupBy.

1 day ago

Entity Framework 8 – Tricks with Partial Classes

In the Entity Framework 8 (EF 8) Database First approach, the generated EF classes cannot be directly extended with additional functionality because they are overwritten when the model is regenerated. To overcome this limitation, we can leverage partial C# classes. This article presents useful tricks for extending functionality in an C#/EF/ASP.NET environment, helping developers keep their custom extensions intact while still benefiting from automatic model generation.

1 day ago