---
title: "ASP.NET Core docs: What's new for May 1, 2021 - May 31, 2021"
description: "What's new in the ASP.NET Core docs for May 1, 2021 - May 31, 2021."
ms.date: 06/01/2021
---

# ASP.NET Core docs: What's new for May 1, 2021 - May 31, 2021

Welcome to what's new in the ASP.NET Core docs from May 1, 2021 through May 31, 2021. This article lists some of the major changes to docs during this period.

## Blazor

### New articles

- <xref:blazor/fundamentals/startup> - Blazor startup topic

### Updated articles

- <xref:blazor/js-interop/call-dotnet-from-javascript>
  - Blazor Call .NET from JS topic updates
  - Blazor Call .NET from JS UE pass
- <xref:blazor/components/lifecycle> - Blazor snippet sample app updates
- <xref:blazor/file-uploads> - Blazor File Uploads topic UE pass

## Fundamentals

### Updated articles

- <xref:fundamentals/http-requests> - Use System.Net.Http.Json in "Make HTTP requests..."
- <xref:fundamentals/logging/index> - Add LoggerFactoryOptions.ActivityTrackingOptions

## MVC

### Updated articles

- <xref:mvc/models/model-binding> - Binding C#9 record types /a

## Razor Pages

### Updated articles

- <xref:razor-pages/ui-class> - prep Razor UI class lib for .NET 5 version
- <xref:razor-pages/sdk> - prep Razor SDK doc for efficient 6.0 PR/compare

## Security

### Updated articles

- <xref:security/authorization/policies> - Show that AuthorizationHandlerContext.Resource is HttpContext for >= 5.0
- <xref:security/authentication/customize_identity_model> - modified documentation for customize identity model

## Tutorials

### Updated articles

- <xref:tutorials/first-mvc-app/adding-model> - First-MVC series: Model & DB tutorials: MT, improve readability and fix issues

## Community contributors

The following people contributed to the ASP.NET Core docs during this period. Thank you! Learn how to contribute by following the links under "Get involved" in the [what's new landing page](index.yml).

- [dharmatech](https://github.com/dharmatech) (10)
- [fiyazbinhasan](https://github.com/fiyazbinhasan) - Fiyaz Bin Hasan (5)
- [serpent5](https://github.com/serpent5) - Kirk Larkin (2)
- [01binary](https://github.com/01binary) - Valeriy Novytskyy (1)
- [devigo](https://github.com/devigo) - Igor Lyadov (1)
- [donhuvy](https://github.com/donhuvy) - Do Nhu Vy (1)
- [FrediKats](https://github.com/FrediKats) - Fredi Kats (1)
- [gradonstone](https://github.com/gradonstone) - Gradon Stone (1)
- [lohithgn](https://github.com/lohithgn) - Lohith (1)
- [markmcgookin](https://github.com/markmcgookin) - Mark McGookin (1)
- [msal4](https://github.com/msal4) - Mohammed Salman (1)
- [pgermishuys](https://github.com/pgermishuys) - Pieter Germishuys (1)
- [slipperstree](https://github.com/slipperstree) - MangoLoveCarrot (1)
- [szalapski](https://github.com/szalapski) - Patrick Szalapski (1)
- [utsxumiao](https://github.com/utsxumiao) - Eric Xu (1)
- [ystvan](https://github.com/ystvan) - Istvan Marki (1)