https://stackoverflow.com/questions/45892312/how-to-add-an-implementation-of-idesigntimedbcontextfactorydatacontext-to-th

搞不明白2.0里这个报错，讨厌的Migration！

如果用了初始化数据。。。要分开run。好像是这么回事。。顺序乱了

var host = BuildWebHost(args);

using (var scope = host.Services.CreateScope())

{

var services = scope.ServiceProvider;

try

{

InitializeDatabase(services ) ;

}

catch (Exception ex)

{

var logger = services.GetRequiredService<ILogger<Program>>();

logger.LogError(ex, "An error occurred seeding the DB.");

}

}

host.Run();