You may be familiar with the async-await from JavaScript or C#. Rust's version of the feature is similar, but with a few key differences. 

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C# 9.0 is taking shape, and I’d like to share our thinking on some of the major features we’re adding to this next version of the language. 

· EF 7.0.0 will not become the “official” version of Entity Framework.
· EF6 will continue to be the official version.
· EF6 will continue to be what’s delivered when you install entityframework via Nuget.
· Your apps that use EF6 will not automatically update to EF7!  

Today, we’re releasing the first Developer Preview of Android 12, the next version of Android, for your testing and feedback.  

What’s new?

Here’s a sampling of the great new features and improvements in ASP.NET Core for .NET 7:

• Servers and runtime
  • Rating limiting: Limit the rate of handled requests using flexible endpoint configuration and policies.
  • Output caching: Configure output caching to reduce to more efficiently handle request.
  • Request decompression: Accept requests with compressed content.
  • HTTP/3: Built-in support for HTTP/3, the latest HTTP version based on the new QUIC multiplexed transport protocol.
  • WebSockets over HTTP/2: Use WebSockets over HTTP/2 connections.
  • WebTransport (experimental): Create streams and data grams over HTTP/3 with experimental support for WebTransport.
• Minimal APIs
  • Endpoint filters: Use endpoint filters to run cross-cutting code before or after a route handler.
  • Typed results: Return strongly typed results from minimal APIs.
  • Route groups: Organize groups of endpoints with a common prefix
• gRPC
  • JSON transcoding: Expand the reach of your gRPC services by also exposing them as JSON-based APIs
  • OpenAPI with JSON transcoding (experimenal): Use experimental support for generating OpenAPI specs for your gRPC JSON transcoded services.
  • gRPC health checks: Report and check the health of gRPC server apps.
  • gRPC client AddCallCredentials : Create clients that send authorized requests using bearer tokens.
• SignalR
  • Client results: Return client results to the server in response to requests from the server.
• MVC
  • Nullable view and page models: Nullable page and view models are now supported to improve the experience when using null state checking.
• Blazor
  • Custom elements: Build standard HTML custom elements with Blazor to integrate Blazor components with any JavaScript-based app.
  • Handle location changing events: Intercept location changing events to create custom user experiences when navigating.
  • Bind after/get/set modifiers: Run async logic after data binding and independently control how data binding gets and sets the data.
  • Dynamic authentication requests: Create dynamic authentication requests at runtime with custom parameters to handle advanced authentication scenarios in Blazor WebAssembly apps.
  • Improved JavaScript interop on WebAssembly: Optimize JavaScript interop call when running on WebAssembly using the new [JSImport]/[JSExport] support.
  • WebAssembly SIMD & exception handling: Improve performance with .NET WebAssembly ahead-of-time (AOT) compilation using WebAssembly SIMD and exception handling support. 

This post shows how to import and export .xls or .xlsx (Excel files) in ASP.NET Core. And when thinking about dealing with excel with .NET, we always look for third-party libraries or component. And one of the most popular .net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx) is EPPlus. However, at the time of writing this post, this library is not updated to support .NET Core. But there exists an unofficial version of this library EPPlus.Core which can do the job of import and export xlsx in ASP.NET Core. This works on Windows, Linux and Mac.