DbContext

DbContext.cs

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            var configuration = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json")
                .Build();

            var connectionString = configuration.GetConnectionString("AppDb");
            optionsBuilder.UseSqlServer(connectionString);
        }