BindingNavigator操作DatagridView的数据

namespace gjjyOffline
{
    public partial class fenye : Form
    {
        public fenye()
        {
            InitializeComponent();
        }

        private void fenye_Load(object sender, EventArgs e)
        {
            //加载显示数据
            using (SQLiteConnection con = new SQLiteConnection("Data Source这一串"))
            {
                con.Open();
                using (SQLiteCommand cmd = new SQLiteCommand())
                {
                    cmd.Connection = con;
                    cmd.CommandText = string.Format(@"select * from jy_dic_crop");//要显示的数据
                    int rows = cmd.ExecuteNonQuery();
                    SQLiteDataAdapter sda = new SQLiteDataAdapter(cmd);
                    DataSet ds = new DataSet();
                    sda.Fill(ds);
                    //con.Close();
                    DataTable dtbl = ds.Tables[0];
                    dataGridView1.AutoGenerateColumns = false;
                    this.dataGridView1.DataSource = dtbl;
　　　　　　　　　　　　//绑定每列的值显示在DatagridView
                    this.dataGridView1.Columns["column1"].DataPropertyName = dtbl.Columns["id"].ToString();//column1是DatagridView的第一列的name值
                    this.dataGridView1.Columns["column2"].DataPropertyName = dtbl.Columns["name"].ToString();
                    this.dataGridView1.Columns["column3"].DataPropertyName = dtbl.Columns["status"].ToString();

　　　　　　　　　　　 //将DatagridView的数据通过BindingSource与BindingNavigator连接起来
                    BindingSource bs = new BindingSource();
                    bs.DataSource = dtbl;
                    bindingNavigator1.BindingSource = bs;
                    dataGridView1.DataSource = bs;
                   
                }
            }
        }
    }
}