FieldList fieldList = payload as FieldList;
///Console.WriteLine("FieldList's entry count: " + fieldList.StandardDataCount);
foreach (FieldEntry fieldEntry in fieldList)
fieldId = fieldEntry.FieldID;
RDMFidDef fidDef = rdmFieldDictionary.GetFidDef(fieldId);
There are two ways to do this:
a. In the foreach iterator, compare each fieldId to the one you desire (BID, ASK) and ignore others.
b. Send a view request, whereby only the fids that are requested are returned in the update messages. This capability is a licenseable feature, and has to be enabled on your ADS. Look at StarterConsumer_BatchView example for details.