Is there a way to capture what RecordType user has picked using apex code

Question

I have few different record-types in my object and I like to know either by Id/Name what record-type the user have selected and based on that record type selection I have to perform some logic behind that.

I have before insert, before update trigger on trigger.New

Map<ID,RecordType> rt_Map = New Map<ID,RecordType>([Select ID, Name From RecordType Where sObjectType = 'mycustom_object__C']);

if(rt_map.get(opp.recordTypeID).name.containsIgnoreCase('YOUR VALUE')) //<<<ERROR
{
        //Do your stuff
}

error:

Initial term of field expression must be a concrete SObject: Map

Answer 1

Please see the example below
Map rt_Map = New Map([Select ID, Name From RecordType Where sObjectType = 'Project__c']);

system.debug((rt_map.get('012g000000051uFAAQ')).name);

I am able to get the name of recordtype. In your case what is opp ? That object does not seem to be defined in your code snippet.
Since this rt_Map is holding values for Id as Key, you must only give Id(String) to fetch values.

you can share your complete code in case it does not work.

Rgds