public class BinaryToImageConverter:IValueConverter    {        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)        {            if (value is Binary)            {                byte[] bytes = new byte[(value as Binary).Bytes.Length];                 bytes = (value as Binary).Bytes;                 MemoryStream stream = new MemoryStream(bytes, 0, bytes.Length);                 BitmapImage image = new BitmapImage();                try                {                    image.SetSource(stream);                    return image;                }                catch (Exception ex)                {                    MessageBox.Show(ex.ToString());                }            }            if (value is String)            {                string s = value.ToString();                 return s + 1111;            }            return null;        }         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)        {            throw new NotImplementedException();        }    }

<Grid x:Name="LayoutRoot" Background="White">        <Grid.Resources>            <silverlightApplication2:BinaryToImageConverter x:Key="BinaryConventer"></silverlightApplication2:BinaryToImageConverter>        </Grid.Resources>        <StackPanel>            <Button x:Name="btselectfile" Height="30" Content="選擇文件" Click="btselectfile_Click"></Button>            <Button x:Name="btshow" Height="30" Content="顯示圖片" Click="btupload_Click"></Button>            <ListBox x:Name="ListBox" Height="260" SelectionChanged="ListBox_SelectionChanged">                <ListBox.ItemTemplate>                    <DataTemplate>                        <StackPanel Orientation="Vertical">                            <TextBlock Height="30" Text="{Binding ProductENname,Converter={StaticResource BinaryConventer}}" Width="100"></TextBlock>                            <Image x:Name="Image" Height="100" Width="100" Source="{Binding ImageBinary, Converter={StaticResource BinaryConventer}}"></Image>                            <!--<Image x:Name="Image" Height="100" Width="100" Source="{Binding ProductENname}"></Image>-->                        </StackPanel>                    </DataTemplate>                </ListBox.ItemTemplate>            </ListBox>        </StackPanel>    </Grid>