您应该拉你的数据转换成一个DataTable和/或数据集并将其存储在一个Session对象。然后你就可以更新新行该对象并重新绑定以往时候你做出改变。

You should pull your data into a DataTable and/or DataSet and store it in a Session object. Then you can update this object with new rows and rebind ever time you make a change.

例如：

pageLoad的

        if (!IsPostBack)
        {
            DataTable dt = new DataTable();

            using (SqlConnection con = new SqlConnection(conString))
            {
                SqlCommand cmd = new SqlCommand("SELECT Id, Name, Price FROM MyCart;", con);
                con.Open();

                SqlDataAdapter da = new SqlDataAdapter(cmd);
                da.Fill(dt);
            }

            Session["MyData"] = dt;
            GridView1.DataSource = dt;
            GridView1.DataBind();
        }

现在你有一个数据表绑定到GridView1，你有源数据的副本在你的会话对象。现在，让我们添加项目到GridView并更新了我们对会话对象DT

Now you have a datatable bound to your GridView1 and you have a copy of the source data in your session object. Now, lets add an item to the gridview and update our dt in our session object.

        DataTable dt = new DataTable();

        if (Session["MyData"] != null)
        {
            dt = (DataTable)Session["MyData"];
        }

        DataRow dr = dt.NewRow();
        dr["Id"] = dt.Rows.Count + 1;
        dr["Name"] = "My New Item";
        dr["Price"] = 19.99;

        dt.Rows.Add(dr);

        Session["MyData"] = dt;
        GridView1.DataSource = dt;
        GridView1.DataBind();

有你走，你添加一个项目到您的数据表，它rebinded到你的GridView。

There you go, you've added an item to your datatable and rebinded it to your GridView.

如果你想要做的这一切客户端，你可以轻松地添加使用jQuery一表行，但你不得不如果你需要它在多页坚持表/数据。

If you want to do this all client side, you could easily add a table row using jQuery but you'd have to persist the table/data if you need it on multiple pages.