See [ Support for nullable models in MVC views and Razor Pages](https://devblogs.microsoft.com/dotnet/asp-net-core-updates-in-net-7-preview-1/#support-for-nullable-models-in-mvc-views-and-razor-pages) But it looks like this was added in .NET 6 See [Support for nullable models in MVC views and Razor Pages](https://docs.microsoft.com/en-us/aspnet/core/release-notes/aspnetcore-7.0?view=aspnetcore-7.0#support-for-nullable-models-in-mvc-views-and-razor-pages)
See Support for nullable models in MVC views and Razor Pages
But it looks like this was added in .NET 6
See Support for nullable models in MVC views and Razor Pages