大家可以帮我看看这段代码有什么错吗？为什么一直报找不到tables 0
public partial class gouwuche : System.Web.UI.Page
  {
  DataTable cart;
  Double TtlPrice;
  BLL.goods goodsbll = new BLL.goods();
  protected void Page_Load(object sender, EventArgs e)
  {
  if (!Page.IsPostBack)
  {
  Image9.Visible = false;
  LabMessage.Visible = false;

  shoplist();
  }
  }
  protected void shoplist()
  {
  Hashtable Hash;
  if (Session["car"] == null)
  {
  Hash = new Hashtable();
  }
  else
  {
  Hash = (Hashtable)Session["car"];
  }
  if (Hash.Count == 0)
  {
  Image9.Visible = true;
  LabMessage.Visible = true;
  LabMessage.Text = "您还没有购物呢？赶快购物吧!";
  }

  string[] ArrKey = new string[Hash.Count];
  int[] ArrVal = new int[Hash.Count];
  string Goods = "('";
  Hash.Keys.CopyTo(ArrKey, 0);
  Hash.Values.CopyTo(ArrVal, 0);
  int k = 0;
  for (int j = 0; j < ArrKey.Length; j++)
  {
  if (k > 0) Goods += "','"; k++;
  Goods += ArrKey.GetValue(j).ToString();
  }
  Goods += "')";


  DataSet ds = goods.GetList("G_No in" + Goods);

  DataTable Table1 = new DataTable();
  Table1 = ds.Tables[0] ;
  //Table1 = ds.Tables["Goods"];
  Table1.Columns.Add(new DataColumn("Number", System.Type.GetType("System.Int32")));

  DataColumn[] Keys = { Table1.Columns["ID"] };
  Table1.PrimaryKey = Keys;
  foreach (string X in Hash.Keys)
  {
  Table1.Rows.Find(X)["Number"] = Hash[X];

  }
  Table1.Columns.Add(new DataColumn("Label1", System.Type.GetType("System.Double"), "price*Number"));


  for (int I = 0; I < Table1.Rows.Count; I++)
  {

  TtlPrice += Convert.ToDouble(Table1.Rows[I]["price"]);

  }

  Label1.Text = TtlPrice.ToString();
  Session["Total"] = Label1.Text.ToString();
  GridView2.DataSource = Table1.DefaultView;
  GridView2.DataBind();

  }
  protected void GridView2_RowCommand(object sender, GridViewCommandEventArgs e)
  {
  Hashtable Hash;
  if (Session["car"] == null)
  {
  Hash = new Hashtable();
  }
  else
  {
  Hash = (Hashtable)Session["car"];
  }

  if (Hash.ContainsKey(e.CommandArgument))
  {
  Hash.Remove(e.CommandArgument);
  }
  LabMessage.Text =