public static string GetHashPasswordByLogin(string login) { string result = ""; SqlConnection Con = DataBaseConnection.ConnectionDB(); SqlDataReader SDR = null; string command = "SELECT l.password FROM login l WHERE l.login = '******'"; SqlCommand com = new SqlCommand(command, Con); com.ExecuteNonQuery(); SDR = com.ExecuteReader(); while (SDR.Read()) { result = SDR[0].ToString(); } return(result); }