bool DoLookup(
	string[] icaos,
	IList<AircraftOnlineLookupDetail> fetchedAircraft,
	IList<string> missingIcaos
)

Function DoLookup ( 
	icaos As String(),
	fetchedAircraft As IList(Of AircraftOnlineLookupDetail),
	missingIcaos As IList(Of String)
) As Boolean

bool DoLookup(
	array<String^>^ icaos, 
	IList<AircraftOnlineLookupDetail^>^ fetchedAircraft, 
	IList<String^>^ missingIcaos
)

abstract DoLookup : 
        icaos : string[] * 
        fetchedAircraft : IList<AircraftOnlineLookupDetail> * 
        missingIcaos : IList<string> -> bool 

Parameters

icaos

Type: SystemString
A collection of ICAOs to fetch.

fetchedAircraft

Type: System.Collections.GenericIListAircraftOnlineLookupDetail
Add fetched aircraft records to this list.

missingIcaos

Type: System.Collections.GenericIListString
Add ICAOs for aircraft that definitely do not have details to this list.

Return Value

This will be called on a background thread but two calls will never run simultaneously.

If the method allows web exceptions to bubble up then they will not be logged by the caller, it would spam the log when the user is offline, but any other type of exception will be logged. If the method throws an exception then it is always assumed to have failed, i.e. returned false. Try not to let exceptions bubble out after a successful fetch.

If the online source cannot be reached or it returns an error then return false. Do not fill in either of the lists, that way the ICAOs passed across will be presented later for another try. If you mark an ICAO as missing when it is not then it could have ramifications elsewhere.

Reference