oop - Convert IList<Interface> to List<Class> -

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list<currentelectionservice> result = new list<currentelectionservice>();     result = oelectionsmanager.getcurrentelectionsbyeid(     employeeid.stringtoguid(), planyear) list<currentelectionservice>;  public class currentelectionservice : icurentelection {    // implement interface fields here }

the method getcurrentelectionsbyeid returns me ilist<icurentelection> , want cast interface class currentelectionservice, returns null. please help.

why not use linq perform cast 

list<currentelectionservice> result = oelectionsmanager.getcurrentelectionsbyeid(     employeeid.stringtoguid(), planyear).cast<currentelectionservice>().tolist();

i hope helps.


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