C# ElasticObject which never fails

ElasticObject.cs

public class ElasticObject : DynamicObject
{
    private IDictionary<string, object> members = new Dictionary<string, object>();
    private IDictionary<int, object> indexes = new Dictionary<int, object>();

    public ElasticObject()
    {
            
    }

    public ElasticObject(IDictionary<string, object> dictionary)
    {
        members = dictionary;
    }

    public override IEnumerable<string> GetDynamicMemberNames()
    {
        return members.Keys;
    }

    public override bool TryGetMember(GetMemberBinder binder, out object result)
    {
        members.TryGetValue(binder.Name, out result);
        return true;
    }

    public override bool TrySetMember(SetMemberBinder binder, object value)
    {
        members[binder.Name] = value;
        return true;
    }


    public override bool TryDeleteMember(DeleteMemberBinder binder)
    {
        members.Remove(binder.Name);
        return true;
    }
        
    public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
    {
        int index = (int)indexes[0];
        this.indexes.TryGetValue(index, out result);
        return true;
    }

    public override bool TrySetIndex(SetIndexBinder binder, object[] indexes, object value)
    {
        int index = (int)indexes[0];
        this.indexes[index] = value;
        return true;
    }

    public override bool TryDeleteIndex(DeleteIndexBinder binder, object[] indexes)
    {
        int index = (int)indexes[0];
        this.indexes.Remove(index);
        return true;
    }

    public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
    {
        dynamic method = members[binder.Name];
        result = method(args[0].ToString(), args[1].ToString());
        return true;
    }

    static public implicit operator ElasticObject(ExpandoObject expando)
    {
        return new ElasticObject(expando);
    }
}