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  SqlConnection cn = new SqlConnection("Data Source=20090713-1752\\SQLEXPRESS;Initial Catalog=goods;Integrated Security=True");
  cn.Open();

  SqlDataAdapter da = new SqlDataAdapter("insert into goods values('" + textBox1.Text + "','" + textBox2.Text + "','" + textBox3.Text + "')", cn);
  DataSet ds=new DataSet ();
  da.Fill(ds, "goods");
   
  MessageBox.Show("OK");
  cn.Close();


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SqlConnection cn = new SqlConnection("Data Source=20090713-1752\\SQLEXPRESS;Initial Catalog=goods;Integrated Security=True"); 
  cn.Open(); 

  SqlDataAdapter da = new SqlDataAdapter("insert into goods values('" + textBox1.Text + "','" + textBox2.Text + "','" + textBox3.Text + "')\n select id, [name], sum([sum]) as [sum]", cn); 
  DataSet ds=new DataSet ();