Visual Basic updates in .NET 10 Preview 1 - Release Notes

.NET 10 Preview 1 includes the following Visual Basic features & enhancements:

• unmanaged constraint support
• Honor overload resolution priority

These features are part of our strategy to ensure that Visual Basic can consume updated features in C# and the runtime. These features won't change how you write Visual Basic code, you'll just find it easier to use the latest runtime APIs.

Visual Basic updates:

• What's new in Visual Basic documentation
• Breaking changes

unmanaged constraint support

C# added the unmanaged generic constraint. The Visual Basic compiler now interprets that constraint and enforces it. Previously, the Visual Basic compiler issues an error if you access a type parameter with the unmanaged constraint. You can learn more in the article on generic types in the Visual Basic documentation.

Honor overload resolution priority

The Visual Basic compiler now respects the OverloadResolutionPriorityAttribute used to resolve ambiguities among method overloads. This feature means that new, faster Span-based overloads are preferred by the VB compiler. Without this, VB would either get a slower overload, or have an ambiguity. You can learn how it works in the article on overload resolution