FPDemo.xaml.cs

 public partial class FPDemo : ContentPage
    {
        public FPDemo()
        {
            InitializeComponent();
        }

        private async void Button_OnClicked(object sender, EventArgs e)
        {
            try
            {
                FileData fileData=new FileData();
                fileData = await CrossFilePicker.Current.PickFile();
                byte[] data = fileData.DataArray;
                string name = fileData.FileName;
                string filePath = fileData.FilePath;
            }
            catch (Exception ex)
            {
                
            
            }
        }