.net - How to find out a background worker completed its work which is started inside for loop C# -


i started thread collects around >500 records every 5 minutes.then foreach statement created seperate background worker each details obtained.i collect data checking condition in queue('qu' in db).while backgroundworkers do_work event update 'qu' status 'pr'.

backgroundworker bw1; collection collect = new collection() foreach (transaction trans in transactionlist)                 {                     try                     {                         collect.transactiondetails = trans;                         bw1 = new backgroundworker();                         bw1.dowork += new doworkeventhandler(bw1_dowork);                         bw1.runworkercompleted += new  runworkercompletedeventhandler(bw1_runworkercompleted);                         bw1.runworkerasync(collect);                     }                     catch                     { }                 }

this lengthy process must run using backgroundworker. question if process takes more thread sleep time complete same records 'qu' status collected again.how can understand process still running , make thread wait more time till complete

you need somehow keep track of running processes. basic way use counter variable increment on creating backgroundworker , decrement when it's completed. find out number of still running backgroundworkers looking @ variable's value.

if you're on .net 4, might want have @ task parallel library.

another thing: far understand create worker thread on 500 items? seems lot me. consider partitioning workload fewer larger pieces.


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