DataRow r = gridView1.GetDataRow(e.RowHandle);
to get edited row values.
And completely method code:
private void gridView1_RowUpdated(object sender, DevExpress.XtraGrid.Views.Base.RowObjectEventArgs e)
{
DataRow r = gridView1.GetDataRow(e.RowHandle);
using (SqlConnection conn = new SqlConnection(Properties.Settings.Default.MARKETConnectionString))
{
conn.Open();
dataAdapter.UpdateCommand = conn.CreateCommand();
dataAdapter.UpdateCommand.CommandText = "UPDATE TestTimeLinked set SecondName = @Name where Id = @Id";
dataAdapter.UpdateCommand.Parameters.AddWithValue("Name", r.Field<string>("SecondName"));
dataAdapter.UpdateCommand.Parameters.AddWithValue("Id", r.Field<int>("ID"));
dataAdapter.UpdateCommand.ExecuteNonQuery();
}
}