ListBox.addItem有什么用()。
A、添加列表框
B、使用Value(值)对话框添加项目
C、添加下拉菜单
D、给组合框添加项目
A、添加列表框
B、使用Value(值)对话框添加项目
C、添加下拉菜单
D、给组合框添加项目
A、List1.AddItem"China",0 B、List1.AddItem"China",1 C、List1.AddItem"China", D、List1.AddItem"1,China"
A、A.List1.AddItem "XXX",3 B、B.List1.AddItem "XXX",2 C、C.List1.AddItem 3,"XXX" D、D.List1.AddItem 2,"XXX"
A、Implement the INotifyPropertyChanged interface in the Product class. B、Implement the INotifyCollectionChanged interface in the ProductList class. C、Set the Mode property of the Binding object of the ListBox control to TwoWay. D、 Set the UpdateSourceTrigger property of the Binding object of the ListBox control to PropertyChanged.