如何在Xamarin中创建弹出UIPickerView

Question

我有一个应用程序，我希望用户提交大量数据（想想注册表单）。我没有在屏幕上看到10个选择器视图，而是希望有10个文本字段，当选择时，屏幕上会弹出UIPickerView。选择数据后，UITextField将显示在UIPickerView中选择的选项。

以下是我在线查看一些swift和objective-c实现的代码示例之后的尝试：

partial class ContactController : UIViewController{
    UIPickerView ContactTypePicker = new UIPickerView();
    public override void ViewDidLoad ()
    {
        base.ViewDidLoad ();

        ContactTypePicker.Hidden = true;
        List<string> data = {"test1", "test2", "test3"};
        ContactTypePicker.Model = new ListPickerModel(data);


        ContactTextField.ShouldBeginEditing = ((textField) => {
            ContactTypePicker.Hidden = false;
            return true;
        });

}
// generic picker class
public class ListPickerModel : UIPickerViewModel{
    List<string> _items;

    public ListPickerModel(List<string> items){
        _items = items;
    }

    public override nint GetComponentCount(UIPickerView picker){
        return 1;
    }

    public override nint GetRowsInComponent (UIPickerView pickerView, nint component)
    {
        return _items.Count;
    }

    public override string GetTitle (UIPickerView pickerView, nint row, nint component)
    {
        return _items [(int)row].Description;
    }

}