请教个连接问题，谢谢

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.SqlClient;
using System.Data;

namespace FirstWPF
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        SqlDataAdapter sda;
        DataTable dt;

        void getData()
        {
            //sqlconnection:
            SqlConnectionStringBuilder connsb = new SqlConnectionStringBuilder();
            connsb.DataSource = "";
            connsb.IntegratedSecurity = true;
            connsb.InitialCatalog = "DogDatas";

            //start make sql query
            SqlConnection conn = new SqlConnection(connsb.ConnectionString);
            sda = new SqlDataAdapter("select id,dogID,userName,companyName,xlNumber from tb_dogdatas where id<=10;", conn);
            SqlCommandBuilder commbld = new SqlCommandBuilder();
            sda.UpdateCommand = commbld.GetUpdateCommand();
            dt = new DataTable();
            sda.Fill(dt);

            listView1.ItemsSource = dt.DefaultView;
        }
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            getData();
        }
    }
}
这里怎么写connsb.DataSource = ""？  调试了几下连接不上，新手求指导
我的实例是这个样子：


[ 本帖最后由 tianqy 于 2013-3-20 11:43 编辑 ]