SqlDataAdapter adapter = new SqlDataAdapter("Select * from Employees", connection);
               SqlCommandBuilder cmdBuilder = new SqlCommandBuilder(adapter);
               DataSet ds = new DataSet("Employees");
               adapter.Fill(ds, "Employees");
               DataRow row = ds.Tables["Employees"].NewRow();
               row["empId"] = textBox1.Text;
               row["empName"] = textBox2.Text;
               row["empSal"] = textBox3.Text;
               ds.Tables["Employees"].Rows.Add(row);
               adapter.Update(ds, "Employees");