我正在开发一个WPF应用程序。 我有一个这样的数据库。 我有三列（ID，姓名，职业）.listbox显示名称列。 当用户点击列表框中的项目，我想告诉他/她的文字块的职业。 列表框效果很好。 我有它一定到数据视图。 但我怎么能显示他/她的文字块的职业？
private void listBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
//What can I write here?
}
Answer 1:
你应该proably TextBlock的文本属性只绑定到列表框中选择的项目。 检查这篇文章在MSDN。
<StackPanel>
<TextBlock Width="248" Height="24" Text="Colors:"
TextWrapping="Wrap"/>
<ListBox x:Name="lbColor" Width="248" Height="56">
<ListBoxItem Content="Blue"/>
<ListBoxItem Content="Green"/>
<ListBoxItem Content="Yellow"/>
<ListBoxItem Content="Red"/>
<ListBoxItem Content="Purple"/>
<ListBoxItem Content="Orange"/>
</ListBox>
<TextBlock Width="248" Height="24" Text="You selected color:" />
<TextBlock Width="248" Height="24">
<TextBlock.Text>
<Binding ElementName="lbColor" Path="SelectedItem.Content"/>
</TextBlock.Text>
</TextBlock>
</StackPanel>
Answer 2:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Data;
using System.Data.OleDb;
namespace WpfApplication2
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1 : Window
{
public DataView view;
public DataSet ds;
public Window1()
{
InitializeComponent();
BindData();
}
public void BindData() {
OleDbConnection con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\\Information.mdb;Persist Security Info=True");
con.Open();
string sql = "Select * from Dictionary";
OleDbCommand cmd = new OleDbCommand(sql, con);
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
try
{
da.Fill(ds, "Info");
view = ds.Tables[0].DefaultView;
listBox1.ItemsSource = view;
}
catch (Exception ex)
{
}}
private void textBox1_TextChanged(object sender, TextChangedEventArgs e)
{
view.RowFilter = string.Format("Name Like '{0}%'", textBox1.Text);
}
}
}
<Window x:Class="WpfApplication2.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="490">
<Grid>
<ListBox Margin="18,77,0,83" Name="listBox1" ItemsSource="{Binding Path=Name}" HorizontalAlignment="Left" Width="213" SelectionChanged="listBox1_SelectionChanged" >
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Name}"> </TextBlock>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<TextBox Height="23" Margin="18,40,0,0" Name="textBox1" VerticalAlignment="Top" TextChanged="textBox1_TextChanged" HorizontalAlignment="Left" Width="213" />
<TextBlock HorizontalAlignment="Right" Margin="0,77,42,83" Name="textBlock1" Width="185" Background="#FFE6C6C6" /><Label Height="28" HorizontalAlignment="Right" Margin="0,39,76,0" Name="label1" VerticalAlignment="Top" Width="140">Label</Label>
</Grid>
</Window>
文章来源: ListBox Selected Item
