單項選擇題

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You add a ListBox control to the application. The ListBox control is data-bound to an instance of a custom collection class of the Product objects named ProductList.
The number of items of the data-bound collection is fixed. However, users can modify the properties of each of the Product objects in the collection.
You need to ensure that changes made on the Product objects are automatically reflected in the ListBox control.
What should you do?（）

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.

你可能感興趣的試題

單項選擇題

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You write the following code fragment.

You need to implement the MyProject.AverageConverter class.
What should you do?（）

A. Implement the IValueConverter interface.
B. Implement the IMultiValueConverter interface.
C. Inherit from the TypeConverter class.
D. Apply the TypeConverterAttribute attribute.

單項選擇題

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You write the following code fragment.

You need to implement the MyProject.MyConverter class.
What should you do?（）

A. Implement the IValueConverter interface.
B. Implement the IMultiValueConverter interface.
C. Inherit from the TypeConverter class.
D. Apply the TypeConverterAttribute attribute.

无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

你可能感興趣的試題

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment. You need to implement the MyProject.AverageConverter class. What should you do?（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment. You need to implement the MyProject.MyConverter class. What should you do?（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You write the following code fragment.

You need to implement the MyProject.AverageConverter class.
What should you do?（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You write the following code fragment.

You need to implement the MyProject.MyConverter class.
What should you do?（）