WPF - 自动建议文本作为人物键入文本框控件

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:toolkit="http://schemas.xceed.com/wpf/xaml/toolkit"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <toolkit:AutoCompleteBox Name="autoCompleteBox"
                                  ItemsSource="{Binding}"
                                  SelectionChanged="autoCompleteBox_SelectionChanged"/>
    </Grid>
</Window>

using System.Windows;
using System.Windows.Controls;
using Xceed.Wpf.Toolkit;

namespace WpfApp1
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            autoCompleteBox.ItemsSource = new string[] { "Apple", "Banana", "Cherry", "Date", "Fig", "Grape", "Lemon", "Mango", "Orange", "Peach", "Plum", "Pineapple", "Strawberry", "Watermelon" };
        }

        private void autoCompleteBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (e.AddedItems.Count > 0)
            {
                string selectedText = e.AddedItems[0].ToString();
                textBox.Text = selectedText;
            }
        }
    }
}