How to Connect and Read Tags Value with lib60870.NET library in C#

Question

I can connect to IEC104 with this code below.

Connection con = new Connection("172.30.1.92", 2404);
con.Connect();

for reading data , I found this code

con.SendReadCommand(24800, 9401);

with the above code I can connect but I don't know how to read value

IPAddress,Port,ca and ioa set correctly