c# - Azure Service Bus Queue processing messages asynchronously in parallel -

i create windows forms program listening on azure service bus queue , executes long process each received brokeredmessage :

queueclient client = queueclient.createfromconnectionstring(configurationwrapper.queueconnectionstring, configurationwrapper.queuename);              // configure callback options             onmessageoptions options = new onmessageoptions();             options.autocomplete = false;             options.autorenewtimeout = timespan.fromminutes(1);               // callback handle received messages             client.onmessageasync((message) =>             {                   message.complete();                 //big jobs put 10 minutes                task t = task.factory.startnew(() => doaverylongjob(message));                 return t;             }, options); 

if send 2 messages 2 seconds of interval in queue, program process first message (calling doaverylongjob takes 10 minutes) , second message processed @ end of the first call (10 minutes after). want these messages processed in parallel.

is possible process queue messages in parallel?

in onmessageoptions instance need increase maxconcurrentcalls. following code process 5 messages queue in parallel.

// configure callback options onmessageoptions options = new onmessageoptions(); options.autocomplete = false; options.maxconcurrentcalls = 5; options.autorenewtimeout = timespan.fromminutes(1);