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Real multithreading in Blazor WebAssembly

affected-fewThis issue impacts only small number of customersThis issue impacts only small number of customers

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

Components Big RockThis issue tracks a big effort which can span multiple issuesThis issue tracks a big effort which can span multiple issues

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-wasmThis issue is related to and / or impacts Blazor WebAssemblyThis issue is related to and / or impacts Blazor WebAssembly

feature-blazor-wasm-threading

Pillar: Complete Blazor Web

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

severity-blockingThis label is used by an internal toolThis label is used by an internal tool

Status: Open.

Feature

#17730 In dotnet/aspnetcore;

· BlenderMender opened on Dec 10, 2019

[Blazor] Data annotations localization support

affected-fewThis issue impacts only small number of customersThis issue impacts only small number of customers

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-server

feature-localization

Pillar: Technical Debt

Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

severity-majorThis label is used by an internal toolThis label is used by an internal tool

triaged

Status: Open.

Feature

#12158 In dotnet/aspnetcore;

· qw-34 opened on Jul 14, 2019

Blazor Custom Route Constraints

affected-fewThis issue impacts only small number of customersThis issue impacts only small number of customers

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-builtin-componentsFeatures related to the built in components we ship or could ship in the futureFeatures related to the built in components we ship or could ship in the future

feature-routing

Pillar: Complete Blazor Web

severity-minorThis label is used by an internal toolThis label is used by an internal tool

Status: Open.

Feature

#28938 In dotnet/aspnetcore;

· GravlLift opened on Dec 30, 2020

.NET 8 Blazor WASM Debugging and Hot Reload are very buggy.

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

feature-hot-reloadThis issue is related to the Hot Reload feaatureThis issue is related to the Hot Reload feaature

Priority:0Work that we can't release withoutWork that we can't release without

product-feedback

triaged

Status: Open.

#54079 In dotnet/aspnetcore;

· DuckScapePhilip opened on Feb 16, 2024

Make Blazor WebAssembly work on multithreaded runtime

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-wasm-threading

triaged

Status: Open.

Feature

#54365 In dotnet/aspnetcore;

· SteveSandersonMS opened on Mar 5, 2024

Re-add proper API calls into Blazor WebAssembly template

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-templates

Status: Open.

Feature

#55307 In dotnet/aspnetcore;

· SteveSandersonMS opened on Apr 23, 2024

Add support for binding decimal, double, float data type with configurable formatting

affected-mediumThis issue impacts approximately half of our customersThis issue impacts approximately half of our customers

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-component-modelAny feature that affects the component model for Blazor (Parameters, Rendering, Lifecycle, etc)Any feature that affects the component model for Blazor (Parameters, Rendering, Lifecycle, etc)

help candidateIndicates that the issues may be a good fit for community to help with. Requires work from eng. teamIndicates that the issues may be a good fit for community to help with. Requires work from eng. team

Pillar: Technical Debt

Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

severity-majorThis label is used by an internal toolThis label is used by an internal tool

Status: Open.

Feature

#5523 In dotnet/aspnetcore;

· Andrzej-W opened on May 17, 2018

Blazor has case sensitive URLs when hosted in a Child Directory

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

feature-blazor-server

feature-routing

Pillar: Technical Debt

Priority:3Work that is nice to haveWork that is nice to have

Status: Open.

#6818 In dotnet/aspnetcore;

· RodDaSilva opened on Jan 17, 2019

[Blazor][Wasm] Set oidc Authentication Options to Local Storage

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-wasmThis issue is related to and / or impacts Blazor WebAssemblyThis issue is related to and / or impacts Blazor WebAssembly

feature-blazor-wasm-auth

help candidateIndicates that the issues may be a good fit for community to help with. Requires work from eng. teamIndicates that the issues may be a good fit for community to help with. Requires work from eng. team

Pillar: Dev Experience

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

triaged

Status: Open.

Feature

#40757 In dotnet/aspnetcore;

· ricardomomm opened on Mar 17, 2022

Prototype background thread rendering and multi-threaded runtime for Blazor WebAssembly

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

cost: LWill take from 5 - 10 days to completeWill take from 5 - 10 days to complete

feature-blazor-wasmThis issue is related to and / or impacts Blazor WebAssemblyThis issue is related to and / or impacts Blazor WebAssembly

feature-blazor-wasm-threading

Status: Open.

Task

#58874 In dotnet/aspnetcore;

· mkArtakMSFT opened on Nov 11, 2024

Decide if we want to replace the Blazor dependency on oidc-client.js

area-authIncludes: Authn, Authz, OAuth, OIDC, BearerIncludes: Authn, Authz, OAuth, OIDC, Bearer

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

Status: Open.

#60094 In dotnet/aspnetcore;

· danroth27 opened on Jan 29, 2025

Adding a route to a Blazor component doesn't work with hot reload

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-hot-reloadThis issue is related to the Hot Reload feaatureThis issue is related to the Hot Reload feaature

Pillar: Dev Experience

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

triaged

Status: Open.

Feature

#52582 In dotnet/aspnetcore;

· danroth27 opened on Dec 5, 2023

Blazor WASM leaves detached nodes

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

investigate

Status: Open.

#61190 In dotnet/aspnetcore;

· Dargazo opened on Mar 27, 2025

Remove the inline JS event handler in the <code>NavMenu</code> component?

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

Status: Open.

#61075 In dotnet/aspnetcore;

· guardrex opened on Mar 21, 2025

[Blazor] Get rid of special webassembly behavior in the static web assets SDK

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

Status: Open.

#59468 In dotnet/aspnetcore;

· javiercn opened on Dec 13, 2024

Assembly lazy load in a Blazor WebProject with rendermode InteractiveWebAssembly(Page/component)

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-lazy-loadingIssues related to adding support for lazy-loading in BlazorIssues related to adding support for lazy-loading in Blazor

Pillar: Complete Blazor Web

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

triaged

Status: Open.

Feature

#57117 In dotnet/aspnetcore;

· GLuca74 opened on Aug 1, 2024

[Blazor] Lazy loading improvements for Webassembly

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

feature-blazor-lazy-loadingIssues related to adding support for lazy-loading in BlazorIssues related to adding support for lazy-loading in Blazor

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

Status: Open.

Bug

#58818 In dotnet/aspnetcore;

· javiercn opened on Nov 6, 2024

[Blazor] Improve the experience with QuickGrid and EF Core

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-quickgrid

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

triaged

Status: Open.

Feature

#58716 In dotnet/aspnetcore;

· javiercn opened on Oct 30, 2024

[Blazor] Update service worker to support fingerprinting

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

Status: Open.

#57302 In dotnet/aspnetcore;

· javiercn opened on Aug 13, 2024

Blazor Server keep-alive &amp; reconnection issues

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

enhancementThis issue represents an ask for new feature or an enhancement to an existing oneThis issue represents an ask for new feature or an enhancement to an existing one

feature-blazor-server

Pillar: Complete Blazor Web

Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

triaged

Status: Open.

Feature

#48724 In dotnet/aspnetcore;

· garrettlondon1 opened on Jun 12, 2023

Blazor TypeClient <code>AddHttpMessageHandler</code> emits <code>InvalidOperationException</code> (ValueFactory attempted to access the Value property of this instance.)

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

DocsThis issue tracks updating documentationThis issue tracks updating documentation

feature-blazor-wasmThis issue is related to and / or impacts Blazor WebAssemblyThis issue is related to and / or impacts Blazor WebAssembly

feature-blazor-wasm-auth

Pillar: Technical Debt

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

triaged

Status: Open.

Task

#33787 In dotnet/aspnetcore;

· ibocon opened on Jun 23, 2021