MCPDMCPD(70-511)单项选择题每日一练(2018.09.18)

单项选择题
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application uses the drag-and-drop functionality. You need to ensure that the drag-and-drop operation is stopped when a user moves the cursor outside the boundaries of the application form. Which enumeration member should you use?（）
A. DragAction.Cancel
B. DragAction.Drop
C. DragDropEffects.None
D. DragDropEffects.All
单项选择题
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 to bind a customer object to several controls in a window.You need to identify the source of the error. What should you do?（）
A. Use a Trace object.
B. Use a Debug object.
C. Use the WPF Visualizer.
D. Use a PresentationTraceSources object.
单项选择题
You are developing a Windows Presentation Foundation (WPF) application to play audio files. You add MediaElement mediaElement1 and a Button control named btnPlayAudio to the design surface. The MediaElement co.. audio file. The LoadedBehavior attribute is set to Manual.You add the following code to the main Window.You set the command of the button to MediaCommands.Play.You need to ensure that the application will play the audio file when the button is pressed.What should you add to constructor of the main window ?（）
A.
B.
C.
D.
单项选择题
You are developing a user control for Windows Presentation Foundation (WPF) application.The user control contains a button. Both the user control and the hosting control must receive the button click event.You need to ensure that the user control responsd to the button click event before hosting control responds to the event.What should you do ?（）
A. Use a bubbling routed event. In the button click event handler, set the Handled property to True
B. Use a bubbling routed event. In the button click event handler, set the Handled property to False
C. Use a standard Microsoft .NET event. Set Handled property to true.
D. Use a tunneling routed event. Set the handled property to false.
单项选择题
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Framework (WPF) application. You have a company logo that must appear on multiple forms in the application. The logo design changes frequently. You need to ensure that when the logo image is changed, you only need to update a single location. What should you do?（）
A. Define the image as a page resource.
B. Define the image as an application resource.
C. Save the image on a network drive.
D. Include the image as an embedded resource.