如何在xamarin表单中禁用粘贴到日期选择器字段

using Xamarin.Forms;

namespace YourNamespace
{
    public class CustomDatePicker : DatePicker
    {
        public CustomDatePicker()
        {
            TextChanged += OnTextChanged;
        }

        protected override void OnParentSet()
        {
            base.OnParentSet();
            if (Parent != null)
            {
                IsEnabled = true;
            }
        }

        protected override void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            base.OnElementPropertyChanged(sender, e);
            if (e.PropertyName == IsEnabledProperty.PropertyName)
            {
                if (!IsEnabled)
                {
                    IsEnabled = true;
                }
            }
        }

        private void OnTextChanged(object sender, TextChangedEventArgs e)
        {
            if (Clipboard.HasText)
            {
                Clipboard.SetText("");
            }
        }
    }
}

var datePicker = new CustomDatePicker();