You create a Windows client application by using Windows Presentation Foundation (WPF). 
The application contains the following code fragment. 

You need to assign lbDetails to use the detail data template when btnDetails is clicked. 
Which code segment should you write for the click event handler for btnDetails?（）

You are developing a Windows Presentation Foundation (WPF) application. All of the application styles are in the file name Themes.dll
You have the followiing markup segment.

BlueBackground is defined in a XAML file named BlueTheme.xaml. The XAML markup is compiled into the Themes.dll file.
You need to ensure that the XAML file is referenced so that the application can apply the settings in the BlueBackground style.（）

You use Microsoft .NET Framework 4 to create an application. 
The application performs resource-intensive calculations that consist of multiple layers of nested looping.
The application will be deployed to servers that contain varying hardware configurations. 
You need to ensure that the application utilizes CPU resources on the server in the most efficient manner. 
You want to achieve this goal by using the minimum amount of code. 
What should you do?（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application has a window named MainWindow that has a StackPanel control named sp as the root element. 
You want to create a Button control that contains a TextBlock control with the "Save" Text property. 
You need to create the control dynamically and add the control to sp. 
Which code segment should you write in the constructor of the MainWindow class?（）

You are developing a Windows Presentation Foundation (WPF) application that display pricing and inventory.
List box's ItemsSource property has decimal and string types. Decimals represent price and strings represents the folowing markup is defined as follows.

You need to ensure that data templates are used to format the strings without changes and the decimals as ..
Which markup segment should you insert at line 05 ?（）

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.)
01sealed class FormSettings :

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 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 are developing a Windows Presentation Foundation (WPF) application for a travel reservation system
You need to ensure that users can select a range of travel dates.
What should you do ?（）

You are developing WPF application for managing student information... btnSort and a DataGrid control named dgStudents on the design surface of the MainWindow.xaml properties : FirstName and LastName. You create the following code segment in the constructor of...

The DataGrid control displays the list of students unsorted.
You need to ensure that the list of students is sorted by last name.
Which code segment should you add to the click event handler of the Button control？（）