ViewComponent View() fails on CoreCLR with IEnumerable<> passed in

[BrennanConroy]

I have a ViewComponent and on InvokeAsync I grab some data from a database and give it to the View.

var query = Context.SomeTable.ToArray();

return View(query.Select(e => new Model
{
Value = e.Val;
Count = e.Count;
}));

A stack trace is at the bottom for the above.

If I Instead do:

var temp = query.Select(e => new Model
{
Value = e.Val;
Count = e.Count;
}).ToArray();

return View(temp);
That will work on Core now.

Stack trace:
System.MethodAccessException: Attempt by method 'Microsoft.AspNet.Mvc.PropertyHelper.MakeFastPropertyGetter(System.Reflection.PropertyInfo)' to access method 'System.Linq.Enumerable+Iterator1<System.__Canon>.get_Current()' failed. at System.Delegate.BindToMethodInfo(Object target, IRuntimeMethodInfo method, RuntimeType methodType, DelegateBindingFlags flags) at System.Delegate.UnsafeCreateDelegate(RuntimeType rtType, RuntimeMethodInfo rtMethod, Object firstArgument, DelegateBindingFlags flags) at System.Delegate.CreateDelegateInternal(RuntimeType rtType, RuntimeMethodInfo rtMethod, Object firstArgument, DelegateBindingFlags flags, StackCrawlMark& stackMark) at System.Reflection.RuntimeMethodInfo.CreateDelegateInternal(Type delegateType, Object firstArgument, DelegateBindingFlags bindingFlags, StackCrawlMark& stackMark) at System.Reflection.RuntimeMethodInfo.CreateDelegate(Type delegateType) at Microsoft.AspNet.Mvc.PropertyHelper.MakeFastPropertyGetter(PropertyInfo propertyInfo) at Microsoft.AspNet.Mvc.PropertyHelper..ctor(PropertyInfo property) at Microsoft.AspNet.Mvc.PropertyHelper.CreateInstance(PropertyInfo property) at Microsoft.AspNet.Mvc.PropertyHelper.<>c__DisplayClass0.<GetProperties>b__3(PropertyInfo p) at System.Linq.Enumerable.WhereSelectArrayIterator2.MoveNext()
at System.Linq.Buffer1..ctor(IEnumerable1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) at Microsoft.AspNet.Mvc.PropertyHelper.GetProperties(Type type, Func2 createPropertyHelper, ConcurrentDictionary2 cache) at Microsoft.AspNet.Mvc.PropertyHelper.GetProperties(Type type) at Microsoft.AspNet.Mvc.ModelBinding.AssociatedMetadataProvider1.CreateTypeInformation(Type type, IEnumerable1 associatedAttributes) at Microsoft.AspNet.Mvc.ModelBinding.AssociatedMetadataProvider1.GetTypeInformation(Type type, IEnumerable1 associatedAttributes) at Microsoft.AspNet.Mvc.ModelBinding.AssociatedMetadataProvider1.GetMetadataForType(Func1 modelAccessor, Type modelType) at Microsoft.AspNet.Mvc.ViewDataDictionary.SetModel(Object value) at Microsoft.AspNet.Mvc.ViewDataDictionary1.SetModel(Object value)
at Microsoft.AspNet.Mvc.ViewDataDictionary`1.set_Model(TModel value)
at Microsoft.AspNet.Mvc.ViewComponent.View[TModel](String viewName, TModel model)
at Microsoft.AspNet.Mvc.ViewComponent.View[TModel](TModel model)
at Namespace.Component.MyCompComponent.d__1.MoveNext() in FileName\Components\MyComp.cs:line 80

[rynowak]

@pranavkm @harshgMSFT

Do you know how model metadata is supposed to behave in this case?

[danroth27]

This seems to be less related to view components and more related to passing an IEnumerable to a View.
@BrennanConroy Can you provide us with the view for this issue. Or even better push a functional test that reproduces this issue?

[BrennanConroy]

It doesn't matter what the view is. You can just have an empty one.

[sornaks]

@BrennanConroy - I am not able to repro this scenario.
This is my ViewComponent:

[ViewComponent(Name = "Test")]
    public class TestViewComponent : ViewComponent
    {
        public IViewComponentResult Invoke()
        {
            var kk = new List<Person>()
            {
                new Person() { Name = "Hello" },
                new Person() { Name = "World" }
            };

            return View(kk as IEnumerable<Person>);
        }
    }

My View calls this like:

@await Component.InvokeAsync("Test")

The build I am using is - KRE-CoreCLR-x86.1.0.0.0-beta2-10709

[BrennanConroy]

Change the kk as IEnumerable<Person> to kk.Select(e => e)