将base64字符串绑定到xamarin形式的listview

byte[] imageBytes = Convert.FromBase64String(base64String);
ImageSource imageSource = ImageSource.FromStream(() => new MemoryStream(imageBytes));
base64List.Add(imageSource);

public class ImageModel
{
    public ImageSource Image { get; set; }
}

List<ImageModel> imageList = new List<ImageModel>();
foreach (string base64String in base64List)
{
    byte[] imageBytes = Convert.FromBase64String(base64String);
    ImageSource imageSource = ImageSource.FromStream(() => new MemoryStream(imageBytes));
    ImageModel imageModel = new ImageModel { Image = imageSource };
    imageList.Add(imageModel);
}

listView.ItemsSource = imageList;