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      • c#教程之對象類(object類)

      • 2015-01-21 22:38 來源:未知

      1.4.1 對象類(object類)(相關C#教程)

      C#中的所有類型(包括數值類型)都直接或間接地以object類為基類。對象類(object類)是所有其它類的基類。任何一個類定義,如果不指定基類,默認object為基類。繼承和基類的概念見以后章節。C#語言規定,基類的引用變量可以引用派生類的對象(注意,派生類的引用變量不可以引用基類的對象),因此,對一個object的變量可以賦予任何類型的值:
      int x =25;
      object obj1;
      obj1=x;
      object obj2= 'A';
      object關鍵字是在命名空間System中定義的,是類System.Object的別名。
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