OracleConnection coon = new OracleConnection(b.cm);
            coon.Open();
            try
            {
                OracleCommand command = new OracleCommand("delete from cloud5 where ID='" +textBox13+ "'", coon);
                command.ExecuteNonQuery();
            }
 catch (Exception ex)
            {
                string c = ex.Message.ToString();
            }
            textBox13.Text = "ID";
            OracleDataAdapter da = new OracleDataAdapter("Select * from cloud5", coon);
            DataSet ds = new DataSet("cloud5");
            da.Fill(ds, "ada");            dataGridView1.DataSource = ds.Tables["ada"];
  大家帮忙看下,这段怎么没能实现删除功能。