MCPDMCPD(70-511)單項選擇題每日一練(2019.07.29)

You use Microsoft .NET Framework 4 to create a Windows Forms application.
You write the following code segment. (Line numbers are included for reference only.)

You need to ensure that the first time each user opens the application, a text field displays the following message: "Please enter your setting."
Which code segment should you insert at line 03? （）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.  
The application displays a list of books. 
You write the following code fragment. (Line numbers are included for reference only.)

You need to ensure that book titles that are out of stock appear in red.
Which code fragment should you insert at line 12?（）

You use Microsoft Visual Studio 2010 and Microsoft . 
NET Framework 4 to create a Windows Presentation Foundation (WPF) application. 
You create a WPF window in the application.  
You add the following code segment to the application. 
public class ViewModel 
{ 
public CollectionView Data { get; set; } 
}
public class BusinessObject 
{ 
public string Name { get; set; } 
}
The DataContext property of the window is set to an instance of the ViewModel class.  
The Data property of the ViewModel instance is initialized with a collection of BusinessObject objects. 
You add a TextBox control to the Window. 
You need to bind the Text property of the TextBox control to the Name property of the current item of the CollectionView of the DataContext object.  
You also need to ensure that when a binding error occurs, the Text property of the TextBox control is set to N/A . 
Which binding expression should you use?（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. 
You plan to use an existing Windows Forms control named MyWinFormControl in the MyControls assembly. 
You need to ensure that the control can be used in your application. 
What should you do?（）

You are developing a Windows Presentation Foundation (WPF) application.
You configure PresentationTraceSource to track errors in a bound TextBox control in the application.
You need to choose the window that the Trace information is sent to
Which Visual Studio window should you select ?（）