'IHostingEnvironment' is obsolete

Question

I updated my ASP.NET Core project to .NET Core v3.0.0-preview3, and I now get:

Startup.cs(75,50,75,69): warning CS0618: \'IHostingEnvironment\' is o

Answer 1

It seems IHostingEnvironment has been replaced by IHostEnvironment (and a few others). You should be able to change the interface type in your code and everything will work as it used to :-)

You can find more information about the changes at this link on GitHub https://github.com/aspnet/AspNetCore/issues/7749

EDIT There is also an additional interface IWebHostEnvironment that can be used in ASP.NET Core applications. This is available in the Microsoft.AspNetCore.Hosting namespace.