Xamarin如何将类属性(来自另一个项目)绑定到Picker.ItemDisplayBinding属性

<Picker ItemDisplayBinding="{Binding PropertyName}" />

// 设置数据上下文
this.BindingContext = new YourViewModel();

// 在YourViewModel中创建一个属性，用于存储需要绑定的类实例
public YourClass PropertyName { get; set; }

public class YourClass : INotifyPropertyChanged
{
    private string _propertyName;

    public string PropertyName
    {
        get { return _propertyName; }
        set
        {
            if (_propertyName != value)
            {
                _propertyName = value;
                OnPropertyChanged(nameof(PropertyName));
            }
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}