public static void Main(string[] args) { var host = BuildWebHost(args); using (var scope = host.Services.CreateScope()) { var context = scope.ServiceProvider.GetRequiredService <DataContext>(); var usermanger = scope.ServiceProvider.GetRequiredService <UserManager <IdentityUser> >(); var roleManager = scope.ServiceProvider.GetRequiredService <RoleManager <IdentityRole> >(); var env = scope.ServiceProvider.GetRequiredService <IConfiguration>(); DbInitialize.Intialize(context, usermanger, roleManager, env); } host.Run(); }