EFCore + LazyLoadingProxies + Localization + Html.DisplayNameForModel() == NotSupportedException: The invoked member is not supported in a dynamic asm

_This issue has been moved from [a ticket on Developer Community](https://developercommunity.visualstudio.com/t/EFCore--LazyLoadingProxies--Localizati/10110219)._

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I'm using EFCore with SQL Server + Lazy Loading. I also use @Html.DisplayNameForModel() to display the model's name in Views. Recently I added localization and now calling @Html.DisplayNameForModel() will cause the following exception,

```
System.NotSupportedException: The invoked member is not supported in a dynamic assembly.
at System.Reflection.Emit.InternalAssemblyBuilder.GetManifestResourceStream(Type type, String name)
at System.Resources.ManifestBasedResourceGroveler.GrovelForResourceSet(CultureInfo culture, Dictionary`2 localResourceSets, Boolean tryParents, Boolean createIfNotExists)
at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo culture, Boolean createIfNotExists, Boolean tryParents)
at System.Resources.ResourceManager.GetString(String name, CultureInfo culture)
at Microsoft.Extensions.Localization.ResourceManagerStringLocalizer.GetStringSafely(String name, CultureInfo culture)
at Microsoft.Extensions.Localization.ResourceManagerStringLocalizer.get_Item(String name)
at Microsoft.AspNetCore.Mvc.DataAnnotations.DataAnnotationsMetadataProvider.<>c__DisplayClass9_0.b__4()
at Microsoft.AspNetCore.Mvc.ModelBinding.Metadata.DefaultModelMetadata.get_DisplayName()
at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper.GenerateDisplayName(ModelExplorer modelExplorer, String expression)
at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper.DisplayName(String expression)
at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperDisplayNameExtensions.DisplayNameForModel(IHtmlHelper htmlHelper)
at AspNetCoreGeneratedDocument.Views_MyModels_Edit.ExecuteAsync() in C:\Users\tspoh\source\repos\EFCoreLocalizationDisplayNameForModelBug\EFCoreLocalizationDisplayNameForModelBug\Views\MyModels\Edit.cshtml:line 10
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, String contentType, Nullable`1 statusCode)
at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, String contentType, Nullable`1 statusCode)
at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ActionContext actionContext, IView view, ViewDataDictionary viewData, ITempDataDictionary tempData, String contentType, Nullable`1 statusCode)
at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor.ExecuteAsync(ActionContext context, ViewResult result)
at Microsoft.AspNetCore.Mvc.ViewResult.ExecuteResultAsync(ActionContext context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|30_0[TFilter,TFilterAsync](ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
```

I am able to replicate the issue and I'm attaching a small project to reproduce it. Open, run and follow steps,
1. Click "Test Bug"
2. Click "Create New" => OK
3. Click "Edit", "Details", or "Delete" => Exception

I noted that the following combination caused the exception,
1. EF Core + LazyLoading + Localization + Html.DisplayNameForModel().

The following combinations are ok,
1. EF Core + LazyLoading + Html.DisplayNameForModel().
2. EF Core + Localization + Html.DisplayNameForModel().

---
### Original Comments

#### Feedback Bot on 8/3/2022, 00:47 AM:

(private comment, text removed)
#### Nicholas Poh on 8/3/2022, 04:32 AM:

(private comment, text removed)

---
### Original Solutions

#### Nicholas Poh solved on 8/4/2022, 09:36 PM, 0 votes:

The workaround is to introduce a new extension for IHtmlHelper

public static string DisplayNameForModelEx(this IHtmlHelper html)

{

    var serviceProvider = html.ViewContext.HttpContext.RequestServices;

    var modelType = html.ViewData.Model.GetType();

    return GetDisplayName(modelType, serviceProvider);

}


private static string GetDisplayName(this Type type, IServiceProvider serviceProvider = null)

{

    string result = null;

    if (type.Namespace.Equals("Castle.Proxies"))

    {

        type = type.BaseType;

    }

    var dnAttributes = GetCustomAttributes<DisplayNameAttribute>(type);

    if (dnAttributes?.Length > 0)

    {

        result = dnAttributes.First().DisplayName;

    }

    if (result == null)

    {

        var dAttributes = GetCustomAttributes<DisplayAttribute>(type);

        if (dAttributes?.Length > 0)

        {

            result = dAttributes.First().Name;

        }

    }

    if (result == null)

    {

        result = type.Name;

    }

    if (serviceProvider != null)

    {

        var genericType = typeof(IStringLocalizer<>);

        var listOfTypeArgs = new[] { type };

        var serviceType = genericType.MakeGenericType(listOfTypeArgs);

        if (serviceProvider.GetService(serviceType) is IStringLocalizer localizer)

        {

            return localizer[result];

        }

    }

    return result;

}

private static T[] GetCustomAttributes<T>(Type type)

    where T : Attribute

{

    return (T[])(object)type.GetCustomAttributes(typeof(T), false);

}

Replace @Html.DisplayNameForModel() with @Html.DisplayNameForModelEx()