使用LazyLoadedProxies时，efcore 2.2关闭特定查询的代理创建

Question

I have an application where in most places I want to be able to use the LazyLoadedProxies so am calling UseLazyLoadingProxies in OnConfiguring.

There are specific queries that I don't want proxies as I am going to serialize the object and others where it may be passed to another part of the application and I don't want any N+1 errors so want to ensure that I am not getting a Proxy.

How can you disable Proxies for a specific query.

Answer 1

I don't want any N+1 errors so want to ensure that I am not getting a Proxy.

No! you cannot disable proxy creation in EF Core query. But for JSON serialization you can turn it off as follows:

public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddMvc()
        .AddJsonOptions(
            options => options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore
        );

    ...
}