Using the infolog in the Enterprise Portal ax 2012

 In the portal you can access the infolog by using the Proxy of the Enterprise Portal

using Proxy = Microsoft.Dynamics.Framework.BusinessConnector.Proxy;
Proxy.Info objInfoLog = new Proxy.Info(this.AxSession.AxaptaAdapter);

Now, when you want to write something to the infolog you need to give a Enum with it,
so the portal knows if the message you want to show is a info, warning or error.
So pass through Proxy.Exception.Info, Proxy.Exception.Warning or Proxy.Exception.Error.

1.objInfoLog.add(Proxy.Exception.Warning, “My warning”);

So in short thing you should keep in mind while using the Infolog-class:
Use short & informative messages
Choose the righty message level (info, warning, error)
Use actions, this simple trick is verry usefull for end-users
Limit the number of messages you send to the Infolog-dialog