string connectString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=D:\\db_kl.mdb";
		
		public bool AddNewClientIntoDB()
        {
            bool flag = false;
            using (OleDbConnection conn = new OleDbConnection(connectString))
            {
                string query = "INSERT INTO Klienti (KlName, KSureName, KlPhone, KlAdress, KlEmail) VALUES ('Andris','Dzied','22222123','London Matisa 120','a@aaa.net')";
                OleDbCommand comm = new OleDbCommand(query, conn);
                
                try
                {
                    conn.Open();
                    if (comm.ExecuteNonQuery() == 1)
                        flag = true;
                }
                catch { }
            }

            return flag;
        }