ListView显示图片IValueConverter

定义一个ImageConverter，该类继续于IValueConverter

这里使用ImageConverter把图片字符串的形式转成BitmapImage对象

代码如下：

[ValueConversion(typeof(string), typeof(BitmapImage))]
    public class ImageConverter : IValueConverter
    {
        /// <summary>
        /// 把对象转换为WPF程序中绑定目标（即控件的某个属性）可以使用的类型数据
        /// </summary>
        /// <param name="value">要转换的对象</param>
        /// <param name="targetType">标示所需要的类型</param>
        /// <param name="parameter">转换所需的参数</param>
        /// <param name="culture"></param>
        /// <returns></returns>
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            //在载入数据的时候将数据转换为图片
            try
            {
                Uri uri = new Uri((string)value, UriKind.RelativeOrAbsolute);
                BitmapImage img = new BitmapImage(uri);
                return img;//返回BitmapImage对象
            }
            catch
            {
                return new BitmapImage();
            }
        }
        /// <summary>
        /// 与Convert相反，可以将控件的属性再转变成数据源类型的对象
        /// </summary>
        /// <param name="value"></param>
        /// <param name="targetType"></param>
        /// <param name="parameter"></param>
        /// <param name="culture"></param>
        /// <returns></returns>
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            //将图片类型转成数据
            BitmapImage img = value as BitmapImage;
            return img.UriSource.AbsoluteUri;
        }
    }

//添加数据源

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            List<Customer> listCustomer = new List<Customer>()
            {
                new Customer(){ ImageUrl = "1.jpg", Name="zhangjinshan1", Sex="男"},
                new Customer(){ ImageUrl = "2.jpg", Name="zhangjinshan2", Sex="女"},
                new Customer(){ ImageUrl = "3.jpg", Name="zhangjinshan3", Sex="男"},
                new Customer(){ ImageUrl = "4.jpg", Name="zhangjinshan4", Sex="女"}
            };
            this.listbox1.DataContext = listCustomer;
        }
        public class Customer
        {
            public string Name { get; set; }
            public string ImageUrl { get; set; }
            public string Sex { get; set; }
        }

XAML:

</StackPanel>
</Window>

图：