Microsoft TS: Windows Applications Development with Microsoft .NET Framework 4 Sample Questions:

1. You are developing a Windows Presentation Foundation (WPF) application for managing student information. You place a Button control named btnSort and a DataGrid control named dgStudents on the design surface of the MainWindow.xaml file. You create a Student class with two properties: FirstName and LastName. You create the following code segment in the constructor of the main window.

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?

A) Dim sortedStudents As IEnumerable(Of Student) Students.orderBy (Function (s) s.LastName) dgStudents.ItemsSource = sortedStudents
B) Dim sortedStudents As IEnnumerable(Of Student) = Students.OrderBy(Function(s) s.LastName).ToList() dgstudents.ltemssource = sortedStudents
C) Students.Sort() dgStudents.ItemsSource = Students
D) Students.Reversed dgStudents.ItemsSource = Students

2. You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You want to localize the application to use the German locale settings.
You need to allow the ResourceManager class to retrieve a neutral German locale version of the text to be displayed in the user interface (UI).
Which file should you add to the project?

A) Resources.de.xml
B) Resources.de.resx
C) Resources.de-DE.resx
D) Resources.de-DE.xml

3. You are developing a Windows Presentation Foundation (WPF) application.
There is an issue in the display of Label. When you open the WPF Visualizer, you see the following information in the left-hand panel of the Visualizer.

You need to identify the XAML markup for the Label control that caused the issue.
Which markup segment corresponds to the Label control?

A) <Label Name="Label1">
<Button Click="Button_Click">
<StackPanel Orientation="Horizontal">
<TextB1ock Text="Click!" />
</StackPanel>
</Button>
</Label>
B) <Label Name-"Labe;1">
<StackPanel Orientation="Horizontal">
<Button Click="Button_Click">
<TextBlock Text="Click!" />
</Button>
</StackPanel>
</Label>
C) <Label Name="Label1">
Button Click="Button Clicks
<StackPanel Orientation="Horizontal">
<TextBlock Text="Click!" />
<Button Content="Click!" Click="Button_Click" />
</StackPanel>
</Button></Label>
D) <Label Name="Label1">
<StackPanel Orientation="Horizontal">
<TextBlock Text="Click!" />
<Button Content="Click!" Click="Button_Click" />
</StackPanel>
</Label>

4. You create a Microsoft Windows Installer file for a Windows Presentation Foundation (WPF) application that requires Microsoft .NET Framework 4.
You need to ensure that the installation starts only if .NET Framework 4 is already installed on the computer.
What should you do?

A) Set the Version property of the Launch Condition to .NET Framework 4.
B) Set the MinVersion property to .NET Framework 4.
C) Set the Version property of Windows Installer to .NET Framework 4.
D) Use a custom action.

5. You develop a Windows Presentation Foundation (WPF) application. This application is used to output data trends to customer service representatives.
You use threading to keep the UI responsive. You have a function named UpdateUI that updates all of the UI components.
You use the following code to update the _Data variable. (Line numbers included for reference only.)

You need to update the user interface without knowing if you are on the UI thread.
Which code segment should you insert at line 06?

A) if (this.Dispatcher. CheckAccess ();
{
var function = new Action (Updated);
this.Dispatcher.ReginInvoke(function, null);
}
else
{ UpdateUI(); }
B) this.Dispatcher.VerifyAccess();
UpdateUI() ;
C) this.Dispatcher.VerifyAccess();
var function = new Action(UpdateUI);
this. Dispatcher.BecginInvoke{function, null);
D) if (this.Dispatcher.CheckAccess() )
UpdateUI ();
}
else
{
var function = new Action(UpdateUI);
this. Dispatcher.ReginInvoice(function, null);
}

Solutions: