我如何通过单击按钮 [C#] 执行 2 sql 个查询

Question

我想复制 items table 和 copy 中的特定行到新的 table (名称- 购物车）。并在 dataGridView 中显示 cart table 中的所有记录。求助！

con = new System.Data.SqlClient.SqlConnection();

        con.ConnectionString = " Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\posdb.mdf;Integrated Security=True";



        string query = "INSERT INTO cart (item_id,Description,Unit_Price,Qty) SELECT item_id,Description,price,'" + txtqty.Text + "' FROM items WHERE item_id = '" + textBox1.Text + "'";
        string qry = "SELECT * FROM cart";

        System.Data.SqlClient.SqlDataAdapter da;
        System.Data.SqlClient.SqlDataAdapter da1;
        da = new System.Data.SqlClient.SqlDataAdapter(query, con);
        da1 = new System.Data.SqlClient.SqlDataAdapter(qry, con);

        ds1 = new DataSet();
        con.Open();
        da1.Fill(ds1,"cart");
        con.Close();
        dataGridView1.DataSource = ds1;
        dataGridView1.DataMember = "cart";

求助！ ......

Answer 1

protected void btn_Click(object sender, EventArgs e)
    {
     insert();
     View();
     }
    private void insert()
    {
      // write insert query 
    }
   private void View()
    {
     // write select query and bind to grid
    }

我如何通过单击按钮 [C#] 执行 2 sql 个查询

How do i execute 2 sql queries by clicking a button [C#]

c#

sql

database

visual-studio-2013