问MySql查询无法在安装相同软件的2台PC上运行

EN

MySqlcnty = new MySqlConnectivity();
string constring = MySqlcnty.ConnectionString;
string query = "SELECT concat(firstname, ' ', lastname, ' ', '(', asma, ')') FROM person where eidikotita = 'ΙΠΤΑΜΕΝΟΣ'";
using (Connection = new MySqlConnection(constring))
{
    using (Cmd = new MySqlCommand(query, Connection))
    {
        Connection.Open();
        using (MySqlDataAdapter da = new MySqlDataAdapter(query, Connection))
        {
            DataSet dt = new DataSet();
            da.Fill(dt, "person");
            CreatedByCombobox.ItemsSource = dt.Tables[0].DefaultView;
            CreatedByCombobox.DisplayMemberPath = dt.Tables[0].Columns[0].ToString();
            CreatedByCombobox.SelectedValuePath = dt.Tables[0].Columns[0].ToString();
            //AskisiCombobox.SelectedIndex = 0;
        }
    }
}