Silverlight ListBox 控件使用介绍

概述1、ListBox的单选和多选 默认情况下只支持单选  通过设定其SelectionMode可以支持多选 SelectionMode - 选择模式 [System.Windows.Controls.SelectionMode 枚举]                     Single - 只允许单选                     Multiple - 可以多选（不需要任何辅助键）   

1、ListBox的单选和多选

默认情况下只支持单选 
通过设定其SelectionMode可以支持多选

SelectionMode - 选择模式 [System.windows.Controls.SelectionMode 枚举]
                    Single - 只允许单选
                    Multiple - 可以多选（不需要任何辅助键）
                    Extended - 可以多选（需要 Ctrl 或 Shift 的配合）

 

2、数据模板和数据绑定

                               <ListBox x:name="lbPerson" ItemsSource="{Binding}" SelectionMode="Multiple"  Height="118" margin="53,55,8,0" VerticalAlignment="top" ScrollVIEwer.HorizontalScrollbarVisibility="HIDden" SelectionChanged="lbPerson_SelectionChanged">
                                        <ListBox.borderBrush>
                                            <linearGradIEntBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                                <GradIEntStop color="#FFA3AEB9" Offset="0.058"/>
                                                <GradIEntStop color="#FF617584" Offset="1"/>
                                            </linearGradIEntBrush>
                                        </ListBox.borderBrush>
                                        <ListBox.ItemTemplate>
                                            <DataTemplate>
                                                <StackPanel OrIEntation="Horizontal">
                                                    <TextBlock x:name="content" FontWeight="Bold" Foreground="#0b333c" FontSize="14" textwrapPing="Wrap"  Text="{Binding Cname}" WIDth="50" Height="20"/>
                                                    <TextBlock x:name="content2" FontWeight="Bold" Foreground="#0b333c" FontSize="14" textwrapPing="Wrap"  Text="{Binding CMCODE}" WIDth="100" Height="20"/>
                                                </StackPanel>
                                            </DataTemplate>
                                        </ListBox.ItemTemplate>
                                    </ListBox>

 

        /// <summary>
        /// 从WebService获取数据，绑定到ListBox的DataContext上
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private voID cbCounty_SelectionChanged(object sender,System.windows.Controls.SelectionChangedEventArgs e)
        {
            MapClIEnt.ServiceReference1.Region ws = (sender as ComboBox).SelectedItem as MapClIEnt.ServiceReference1.Region;

            getMapDataSoapClIEnt clIEnt = new getMapDataSoapClIEnt();
            clIEnt.getRYByADDVCDCompleted += new EventHandler<getRYByADDVCDCompletedEventArgs>(clIEnt_getRYByADDVCDCompleted);
            clIEnt.getRYByADDVcdasync(ws.RegionCode);
        }

        voID clIEnt_getRYByADDVCDCompleted(object sender,getRYByADDVCDCompletedEventArgs e)
        {
            ObservableCollection<FXJGRY> Lists = e.Result;
            this.lbPerson.DataContext = Lists;
        }

       public T FindFirstVisualChild<T>(DependencyObject obj,string childname) where T : DependencyObject
        {
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
            {
                DependencyObject child = VisualTreeHelper.GetChild(obj,i);
                if (child != null && child is T && child.GetValue(nameProperty).ToString() == childname)
                {
                    return (T)child;
                }
                else
                {
                    T childOfChild = FindFirstVisualChild<T>(child,childname);
                    if (childOfChild != null)
                    {
                        return childOfChild;
                    }
                }
            }
            return null;
        }

        Dictionary<string,string> dic = new Dictionary<string,string>();
        private voID lbPerson_SelectionChanged(object sender,System.windows.Controls.SelectionChangedEventArgs e)
        {
            ListBoxItem _selectedItem = (ListBoxItem)(lbPerson.ItemContainerGenerator.ContainerFromItem(this.lbPerson.SelectedItem));

            TextBlock myTxt = FindFirstVisualChild<TextBlock>(_selectedItem,"content2");
            if (!dic.ContainsValue(myTxt.Text.ToString().Trim()))
            {
                dic.Add(myTxt.Text.Trim(),myTxt.Text.Trim());
            }
            foreach (keyvaluePair<string,string> kvp in dic)
            {
                MessageBox.Show(kvp.Value.ToString());
            }
        }

 

3、效果如图

总结

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