How to create a "Search" textbox, with instant result show in listbox? Int value

Hi. I'm new to WPF (just 1 week before i have no ideas what it is)

I have a listbox, with data taken from a column (busId: int) in table "INFO" from SQL Server.

I want to create a Search textbox. When user enter some number, the listbox above will automatically filter the data to show only row that contain the number the user entered in textbox.

I've searched for this for days. Non of the solutions work.

Here my code

XAML

<Window x:Class="Test2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Select Bus" Height="250" Width="250" Loaded="Window_Loaded">
<Grid Height="200" Width="200">

<ListBox Name="BusInformation"
ItemsSource="{Binding Tables[INFO]}"
DisplayMemberPath="busId" Margin="0,31,124,0">
</ListBox>
<TextBlock Height="33" HorizontalAlignment="Left" Name="textBlock1" Width="188" VerticalAlignment="Top" FontWeight="Bold" TextWrapping="Wrap"
Text="Select a Bus ID, then click Show"/>
<Button Content="Xem thông tin" Height="28" HorizontalAlignment="Left" Margin="104,60,0,0" Name="buttonInfo" VerticalAlignment="Top" Width="84" Click="buttonInfo_Click"/>
<TextBox Height="24" HorizontalAlignment="Left" Margin="104,129,0,0" Name="textBoxSearch" VerticalAlignment="Top" Width="84" TextChanged="textBoxSearch_TextChanged" />
<Label Content="Search" Height="21" HorizontalAlignment="Left" Margin="102,102,0,0" Name="label1" VerticalAlignment="Top" Width="86" />
</Grid>
</Window>

C# Code-behind

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
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.SqlClient;
using System.ComponentModel;
using System.Windows.Threading;

namespace Test2
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{

private DataSet GetADOData()
{
DataSet dsSet = new DataSet();

string connectionString = @"Data Source=TRAN-D1652CEBAF\SQEXPRESS2;Initial Catalog=bus_test2;Integrated Security=True";
string sql="SELECT * FROM INFO";
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand command=new SqlCommand(sql, connection);
SqlDataAdapter adapter = new SqlDataAdapter();
connection.Open();
adapter.SelectCommand = command;
adapter.Fill(dsSet, "INFO");
}

return dsSet;
}

public MainWindow()
{
InitializeComponent();
BusInformation.DataContext = GetADOData();
}

private void buttonInfo_Click(object sender, RoutedEventArgs e)
{
var MainWindow = new Details();
MainWindow.Show();
DataRowView drv = (DataRowView)BusInformation.SelectedItem;
MainWindow.textBlock1.Text = drv.Row["BusId"].ToString();
MainWindow.textBlockBusName.Text = drv.Row["name"].ToString();
MainWindow.textBoxGo.Text = drv.Row["go"].ToString();
MainWindow.textBoxBack.Text = drv.Row["back"].ToString();
}

private void Window_Loaded(object sender, RoutedEventArgs e)
{

}

private void textBoxSearch_TextChanged(object sender, TextChangedEventArgs e)
{

}

}
}

Thanks