'System.Collections.Generic.IList<object>' does not contain a definition for 'Add' when using 'dynamic' and 'ExpandoObject'

Question

Say that I have a class, Foo, looking something like this:

public class Foo : IFoo
{
    public Foo()
    {
        Bars = new List();
    }
    p         


        

Answer 1

I'm not sure if this subverts your particular use case, but:

Try explicitly casting Bars to System.Collections.IList.

((System.Collections.IList)foo.Bars).Add(a);

Source: https://stackoverflow.com/a/9468123/364

Alternatively, just redefine Bars as IList rather than IList in your interface + class.