Silverlight ListBox 控件使用介紹

1、ListBox的單選和多選

預設情況下隻支援單選 

通過設定其SelectionMode可以支援多選

SelectionMode - 選擇模式 [System.Windows.Controls.SelectionMode 枚舉]

                    Single - 隻允許單選

                    Multiple - 可以多選（不需要任何輔助鍵）

                    Extended - 可以多選（需要 Ctrl 或 Shift 的配合）

2、資料模闆和資料綁定

                               <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>

        /// 從WebService擷取資料，綁定到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、效果如圖