ado.net 离线数据集

下面的程序可使数据库的数据脱离数据库，保留在客户端来操作

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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;

namespace WpfApplication1_dataset_离线数据集
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            string connStr = ConfigurationManager.ConnectionStrings["dbConnstr"].ConnectionString;
            MessageBox.Show(connStr);
            DataSet dataset = new DataSet();            
              
            using (SqlConnection conn = new SqlConnection(@"Data Source=.; Initial Catalog=master;User Id=sa;Password=******"))
                {
                    conn.Open();                   
                    using (SqlCommand cmd = conn.CreateCommand())
                    {                       
                        cmd.CommandText = "Select Id from [Table] where Name=@Name";
                        cmd.Parameters.Add(new SqlParameter("@Name", "元芳"));
                        SqlDataAdapter adapter = new SqlDataAdapter();
                        adapter.Fill(dataset);

                    }
                }
                          DataTable table = dataset.Tables[0];
            DataRowCollection rows = table.Rows;
            for (int i = 0; i < rows.Count; i++)
            {
                DataRow row = rows[i];
                int id = (int)row["Id"];
                string name = (string)row["Name"];
                MessageBox.Show(id+","+name);
 
            }

            }

      
        }
    }