ItemsSource数据绑定未正确绑定

Question

我对xaml和C＃数据绑定还很陌生。我正在尝试使用ItemsSource，ItemDisplayBinding和SelectedItem将Picker绑定到IList。选取器绑定到IList，但是没有显示正确的信息。

我查看了一些资源，Monkey App选择器是一个很大的帮助。 https://github.com/xamarin/xamarin-forms-samples/tree/master/UserInterface/MonkeyAppPicker

我试图复制他的所作所为，但无济于事。

<Picker ItemsSource="{Binding Mills}" 
ItemDisplayBinding="{Binding Name}" 
SelectedItem="{Binding SelectedMill, Mode=TwoWay}"/>

namespace TDSDesktop
{
    public class PurchaseAgreementBindings : INotifyPropertyChanged
    {
        public class Mill
        {
            public string Name { get; set; }
            public string Address1 { get; set; }
            public string Address2 { get; set; }
            public string Phone { get; set; }
        }

        public static class MillData
        {
            public static IList<Mill> Mills { get; private set; }

            static MillData()
            {
                Mills  = new List<Mill>();
                Mills.Add(new Mill
                {
                    Name = "Name1",
                    Address1 = "123",
                    Address2 = "City, State Zip",
                    Phone = "555-555-5555"
                });
                Mills.Add(new Mill
                {
                    Name = "Name2",
                    Address1 = "456",
                    Address2 = "City, State Zip",
                    Phone = "888-888-8888"
                });
            }
        }

        public IList<Mill> Mills { get { return MillData.Mills; } }

        Mill selectedMill;
        public Mill SelectedMill
        {
            get { return selectedMill; }
            set
            {
                if (selectedMill != value)
                {
                    selectedMill = value;
                    OnPropertyChanged();
                }
            }
        }
    }
}

理论上，选择器应显示两个值（Name1和Name2），因为我将ItemDisplayBinding设置为Name。但是，当我运行程序时，两个值均为“ TDSDesktop.PurchaseAgreementBindings + Mill”。显然我缺少了一些东西。如果有人可以解释我该如何解决此问题，我将不胜感激。