public static Boolean Login(string number, string name)
	{
		string connString = ConfigurationManager.ConnectionStrings["sqlconnectionstring"].ConnectionString;

		using (SqlConnection conn = new SqlConnection(connString))
		{
			SqlCommand cmd = new SqlCommand("SELECT Holders.number, Holders.name from Holders where (Holders.number = @number AND Holders.name = @name)", conn);
			cmd.Parameters.Add("number", SqlDbType.Char).Value = number;
			cmd.Parameters.Add("name", SqlDbType.Char).Value = name;
			conn.Open();
			using (SqlDataReader reader = cmd.ExecuteReader())
			{
				while (reader.Read())
				{
					return true;
				}
			} // Dispose Reader
		} // Dispose connection
		return false;
	}
}