Exemplo n.º 1
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 private static void InvokeStatePattern()
 {
     CardReader c=new CardReader();
       c.PerformOperation(); //Instance will point to CardInsert
     c.PerformOperation();//Instance will point to CardHold
     c.PerformOperation();//Instance will point to CardDiscard
 }
Exemplo n.º 2
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 public CardInsert(CardReader Reader)
 {
     _reader = Reader;
 }
Exemplo n.º 3
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 public CardHold(CardReader reader)
 {
     _reader = reader;
 }
Exemplo n.º 4
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 public CardDiscard(CardReader reader)
 {
     _reader = reader;
 }