c# public ObservableCollection icons = new ObservableCollection();

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c#publicObservableCollectionicons=newObservableCollection();c#publicObservableCollectionicons=newObs

c# public ObservableCollection icons = new ObservableCollection();
c#
public ObservableCollection icons = new ObservableCollection();

c# public ObservableCollection icons = new ObservableCollection();
泛型集合,其中内的类型就是集合里边只能添加的类型,约束了集合不能添加其他类型,安全性提高