.NET and ASP.NET Core 10 · Entity Framework Core
Register a DbContext
Add Entity Framework Core with PostgreSQL to dependency injection.
builder.Services.AddDbContext<AppDbContext>(options =>
options.UseNpgsql(builder.Configuration.GetConnectionString("Default")));
Official .NET and ASP.NET Core 10 documentation
More entity framework core commands
All entity framework core commands · .NET and ASP.NET Core 10 cheatsheet