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:

<Window x:Class="WpfApplication5.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:my="clr-namespace:WpfApplication5"
       
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <my:ImageConverter x:Key="ImageCoverter"/>
        <Style TargetType="{x:Type ListView}">
            <Setter Property="BorderThickness" Value="1"/>
        </Style>
        <Style TargetType="{x:Type Image}" x:Key="image">
            <Setter Property="Margin" Value="0,10,0,10"/>
        </Style>
    </Window.Resources>
    <StackPanel>
        <ListView Width="300" Height="300" x:Name="listbox1" ItemsSource="{Binding Path=.}">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="姓名" DisplayMemberBinding="{Binding Name}" Width="120"/>
                    <GridViewColumn Header="照片">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <Image Width="60" Style="{StaticResource ResourceKey=image}" x:Name="img" Height="60" Stretch="Fill"
                           Source="{Binding ImageUrl, Mode=TwoWay, Converter={StaticResource ResourceKey=ImageCoverter}}"/>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                    <GridViewColumn Header="性别" DisplayMemberBinding="{Binding Sex}" Width="70"/>
                </GridView>
            </ListView.View>
        </ListView>

    </StackPanel>
</Window>

图：