Error in API scaffolder when model type uses the required keyword

[DamianEdwards]

Found using latest Visual Studio INT PREVIEW or PREVIEW build.

1. Create a new ASP.NET Core Web API project targeting .NET 7 without controllers (aka Minimal APIs)
2. Add the following model type declaration to Program.cs (note the required keyword on the Title property):

   public class Todo
   {
       public int Id { get; set; }
       public required string Title { get; set; }
       public bool IsComplete { get; set; }
   }

3. Invoke the "API with read/write endpoints, Entity Framework" scaffolder via the "Add Scaffolded Item" project context menu
   • Select the Todo type as the model class
   • Select to create a new endpoints class with the default name
   • Select to create a new data context class with the default name
   • Leave other options at their default values
4. The following error dialog is displayed:
   

   ---------------------------
   Microsoft Visual Studio
   ---------------------------
   Error
   
   There was an error running the selected code generator:
   
   'There was an error creating a DbContext :C:\Users\damia\source\repos\WebApplication109\WebApplication109\Program.cs(31,21): error CS1519: Invalid token 'string' in class, record, struct, or interface member declaration'
   ---------------------------
   OK   
   ---------------------------
   

[deepchoudhery]

Fixed, verified in VS 17.4.3 and VS 17.5 Preview 2 (newer 7.0.1 packages)