public void CreateAccount(string pseudo, string mdp, string nom, string prenom, string num_tel, float solde)
{
string s = solde.ToString().Replace(',', '.');
m_clientSQL.AddRow("client", new string[] { "'" + pseudo + "'", "'" + mdp + "'", "'" + nom + "'", "'" + prenom + "'", "'" + num_tel + "'", s });
}