Study Notes (47): C # fast entry - enumerated type int and type conversion

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Enumeration type int and type conversion

1. int type enumerated types and are compatible, but must explicitly turn type strongly

enum QQstate
{
        Online = 1,
        Offline,
        Hidden = 5,
        Leave,
        Busy
 }
int state = (int)QQstate.Online;      //state的值为1

2. The conversion enumeration value, if the value does not exist, no conversion, is not given

enum QQstate
{
        Online = 1,
        Offline,
        Hidden = 5,
        Leave,
        Busy
 }
QQstate qq = (QQstate)5;        //qq的值为Hidden
QQstate qq = (QQstate)10;        //qq的值为10