BlazorBus 1.0.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package BlazorBus --version 1.0.0
                    


                    

                
NuGet\Install-Package BlazorBus -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="BlazorBus" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="BlazorBus" Version="1.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="BlazorBus" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add BlazorBus --version 1.0.0
                    


                    

                
#r "nuget: BlazorBus, 1.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package BlazorBus@1.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=BlazorBus&version=1.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=BlazorBus&version=1.0.0
                    


                            Install as a Cake Tool

BlazorBus

NuGet

Lightweight publish/subscribe message bus for Blazor components.

The Problem

In Blazor, components that are not in a parent-child relationship have no built-in way to communicate. The common workarounds — prop drilling, cascading parameters, or shared state services — add coupling and boilerplate that grows with your app.

BlazorBus solves this with a simple pub/sub bus: components that don't know each other can still send and receive strongly-typed messages.

Installation

dotnet add package BlazorBus

Setup

Register BlazorBus in Program.cs:

using BlazorBus.Extensions;

builder.Services.AddBlazorBus();

Usage

Define your message (anywhere in the project):

public record ProductoAgotado(int ProductoId, string Nombre);

Publisher component — sends the message, knows nothing about subscribers:

@inject IBlazorBus Bus

<button @onclick="Notify">Mark as out of stock</button>

@code {
    void Notify() => Bus.Send(new ProductoAgotado(1, "Laptop"));
}

Subscriber component — reacts to the message, knows nothing about the publisher:

@inject IBlazorBus Bus
@implements IDisposable

<p>@_message</p>

@code {
    string _message = "";

    protected override void OnInitialized()
    {
        Bus.Subscribe<ProductoAgotado>(OnProductoAgotado);
    }

    void OnProductoAgotado(ProductoAgotado e)
    {
        _message = $"Out of stock: {e.Nombre}";
        StateHasChanged();
    }

    public void Dispose()
    {
        Bus.Unsubscribe<ProductoAgotado>(OnProductoAgotado);
    }
}

Always call Unsubscribe in Dispose to avoid memory leaks.

Why BlazorBus?

Feature BlazorBus
Zero external dependencies Yes
Type-safe (types, not strings) Yes
Works with any architecture Yes
Minimal API 3 methods: Subscribe, Unsubscribe, Send
Singleton — one bus for the whole app Yes

License

MIT

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last Updated
1.0.0 83 3/24/2026