---
title: "Signals in Blazor"
url: https://daily.dev/posts/signals-in-blazor-ucdlcmor0
source_url: https://steven-giesel.com/blogPost/495d87ca-61df-4c52-a253-8ba4abc186b7
type: article
source: "We Are .NET"
published: 2026-06-20T08:50:55.285Z
updated: 2026-06-20T08:51:16.414Z
tags: [".net", "angular", "blazor", "reactive-programming"]
reading_time: 7
upvotes: 2
comments: 0
language: en
---

> ## Documentation Index
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# Signals in Blazor

**[We Are .NET](https://daily.dev/sources/wearedotnet)** · 7 min read · 2 upvotes · 0 comments

## Summary

Blazor lacks native signal support, but you can implement a Signal<T> system similar to Angular's. The approach uses an ambient AsyncLocal context to track which signals are read during rendering, then notifies observers when values change. A custom Reactive component wraps render fragments, subscribes to signals accessed during render, and calls StateHasChanged() automatically when dependencies update. The implementation also supports Computed<T> values that lazily re-evaluate when upstream signals change, eliminating the need to manually call StateHasChanged() in timer callbacks or other non-event-driven update scenarios.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://steven-giesel.com/blogPost/495d87ca-61df-4c52-a253-8ba4abc186b7>

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---

Tags: [#.net](https://daily.dev/tags/.net), [#angular](https://daily.dev/tags/angular), [#blazor](https://daily.dev/tags/blazor), [#reactive-programming](https://daily.dev/tags/reactive-programming)

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