Sorry, my English is not very good, I have a object "Stuffs" "Stuffs" have a Property “Icon” now: xaml

<Button Click="Button_Click"><Image Width="80" Height="80"   Source="{Binding Path=Icon,Converter={StaticResource ImageConverter}}"/></Button>

cs

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        IconFloder.Title = "Icon";
        String IconFloderPath = AppDomain.CurrentDomain.BaseDirectory + ItemIconFloder;
        if (!System.IO.Directory.Exists(IconFloderPath)) System.IO.Directory.CreateDirectory(IconFloderPath);
        IconFloder.InitialDirectory = IconFloderPath;
        IconFloder.Filter = "Image File|*.jpeg";
        IconFloder.ValidateNames = true;
        IconFloder.CheckPathExists = true;
        IconFloder.CheckFileExists = true;
        if (IconFloder.ShowDialog() == true)
        {
            HideImage.Text = ItemIconFloder + "\\" + IconFloder.SafeFileName;

            ((sender as Button).Content as Image).Source = new ImageConverter().Convert(ItemIconFloder + "\\" + IconFloder.SafeFileName, Type.GetType("System.Windows.Media.ImageSource"), null, new System.Globalization.CultureInfo("en-US")) as ImageSource;

        }
    }


class ImageConverter:IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (value is string&&!String.IsNullOrEmpty(value.ToString()))
        {
            try
            {
                return new BitmapImage(new Uri(AppDomain.CurrentDomain.BaseDirectory + value));
            }
            catch { }
        }
        return null;
    }
    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

I would like to click buttons, change the picture, Also change Data Binding Stuffs.Icon But failed,I have no idea?I need help? I do not know whether I speak clearly