Rx.NET v6.1 New Feature: TakeUntil(CancellationToken)

In this video, Ian Griffiths introduces the new TakeUntil(CancellationToken) operator in Rx.NET 6.1, released in October 2025.

He discusses the purpose and functionality of this operator, which allows users to stop an infinite source when a cancellation token is signalled.

Ian acknowledges the contributions of community members Nils Aufschläger and Daniel Weber in shaping and developing this feature. Through a simple example using the Interval operator, Ian demonstrates how this new operator works and explains its benefits.

Learn how to manage infinite sources effectively with the new TakeUntil(CancellationToken) operator in Rx.NET 6.1.

Full documentation is available at Introduction to Rx.NET.

• 00:00 Introduction to Rx.NET 6.1 and New Features
• 00:47 Community Contributions and Design Evolution
• 01:27 Understanding the TakeUntil(CancellationToken) Operator
• 03:08 Practical Example: Using TakeUntil with Interval
• 06:00 Summary and Documentation