.NET Standard and .NET Core – What and Why? 

// work
services.AddValidatorsFromAssemblyContaining<Car>();

// not work
services.AddValidatorsFromAssemblyContaining<ClassLibrary1.Person>();

At last, SQL Server has caught up with other RDBMSs by providing a useful measure of JSON-support. It is a useful start, even though it is nothing like as comprehensive as the existing XML support. For many applications, what is provided will be sufficient. Robert Sheldon describes what is there and what isn't. 

There is a lot of buzz around the internet about Vue.js 3.0's announcement about a new composition model. There are a lot of questions about it and I think much of it is 'they moved my cheese' more than 'they're breaking everything'. 

Here’s a quick rundown of some of the changes:

• Added validation styles for file inputs
• Improved printing of dark tables
• Suppressed that text-hide deprecation notice by default
• Fixed an issue where Collapse wasn’t working in Internet Explorer
• Cleaned up some JS globals and improve coverage
• Bumped dependencies, namely Jekyll
• Fixed docs issue with incorrect name for our monospace font utility 

Those of you who worked with ASP.NET web forms will recollect that certain server controls such as DropDownList have a property called AutoPostBack. This property when set to true automatically submits the form to the server whenever the selection changes and raises some server side event. In modern web development people prefer to use Ajax over AutoPostBack but at times AutoPostBack is what you might need. To that end this article shows how AutoPostBack can be implemented in ASP.NET Core applications. 

This bug-fix update resolves the following issues:

ReSharper Build couldn’t build a project if MSBuild was installed as part of Visual Studio 2019 Preview 1 (RSRP-472694).
Visual Studio froze on JavaScript debugging (RSRP-472802).
Inconsistent default state around ‘Inconsistent Naming‘ inspection (RSRP-472812).
A false positive for NUnit TestCase (RSRP-472787).
Unit test coverage highlighting is not shown for projects targeting .NET Framework 3.5 and lower (DCVR-9525).
False “Cannot convert type” error for Promise in TypeScript.
Find Usages did not process bodies of #define macros when looking for textual occurrences (RSCPP-24977).
“Remove unused parameter” quick-fix was broken in C++ (RSCPP-25094).
 

Fixed bug where LangVersion property was not read correctly from project file, blocking C# 7.1 development.
Fixed long-standing problem with renaming files.
Added csharp.referencesCodeLens.enabled and csharp.testsCodeLens.enabled options to allow disabling/enabling for the 'references' and 'run/debug test' code lenses independently.