MCPDMCPD(70-511)單項(xiàng)選擇題每日一練(2019.05.05)

單項(xiàng)選擇題
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You add a ListBox to show grouped data. The ListBox is data-bound to a collection of items. Each item has the Name and State properties. You need to ensure that the ListBox meets the following requirements: Names grouped by State Names sorted in ascending order States sorted in descending order Which code fragment should you use?（）
A.
B.
C.
D.
單項(xiàng)選擇題
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment. You need to ensure that the StringMember property of the data-bound object is updated immediately when the user types the TextBox control. Which binding expression should you use?（）
A. { Binding Path=StringMember, Mode=TwoWay }
B. { Binding Path=StringMember, NotifyOnSourceUpdated=True }
C. { Binding Path=StringMember, NotifyOnTargetUpdated=True }
D. { Binding Path=StringMember, UpdateSourceTrigger=PropertyChanged }
單項(xiàng)選擇題
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You create a class named Person that has a FirstName property and a LastName property. You create a resource that contains a collection of Person objects and assign the family key to it. You add a ListBox control by using the following code fragment. (Line numbers are included for reference only.)You need to ensure that each item in the ListBox control meets the following requirements: Contains a TextBox that is data-bound to the FirstName property. Contains a TextBox that is data-bound to the LastName property. Which code fragment should you insert at line 04?（）
A.
B.
C.
D.
單項(xiàng)選擇題
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You want the application to contain a window as shown in the following exhibit. The application contains the following code fragment. (Line numbers are included for reference only.)You need to create the application window. Which code fragment should you insert at line 12?（）
A.
B.
C.
D.
單項(xiàng)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 ensure that the ButtonHandler method is not executed when the user clicks the CancelButton button. Which code segment should you add to the code-behind file?（）
A.
B.
C.
D.

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