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

1. You plan to create a Windows Presentation Foundation (WPF) user control.
You need to create a WPF user control that contains 12 areas that are identical in size. The solution must meet the following requirements:
- Ensure that if the control is resized, the relative size of the areas will remain the same. - Minimize development effort.
Which control should you use?

A) StackPanel
B) DockPanel
C) Viewbox
D) UniformGrid
E) WrapPanel

2. 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

3. You are developing a Windows Presentation Foundation (WPF) application. The MainWindow.xaml file contains a TreeView control with a DataTemplate that displays three levels in the following hierarchical order:
1. Household
a.Parents
i.Children
You need to ensure that a Menu control is configured to display the same hierarchy.
What should you do?

A) Set the ItemSource for the Menu control to the ResourceKey value of the TreeView's ItemTemplate
Set the ResourceKey for the Menu control's ItemTemplate to the Key value for the DataTemplate.
B) Set the ItemSource for the Menu control to the ItemSource value of the TreeView control.
Set the ResourceKey for the Menu control's ItemTemplate to the Key value for the DataTemplate.
C) Set the Item Source for the Menu control to the ItemSource value of the TreeView control.
Set the ResourceKey for the Menu control's ItemTemplate to the ResourceKey value for the TreeView's ItemTemplate.
D) Set the ItemSource for the Menu control to the ResourceKey value of the TreeView's ItemTemplate.
Set the ResourceKey for the Menu control's ItemTemplate to the ItemSource value for the TreeView.

4. You use Microsoft .NET Framework 4 to create a Windows Forms application.
You add a new class named Customer to the application. You select the Customer class to create a new object data source.
You add the following components to a Windows Form:
- A BindingSource component named customerBindingSource that is data-bound to the Customer object data source.
- A set of TextBox controls to display and edit the Customer object properties. Each TextBox control is data-bound to a property of the customerBindingSource component.
- An ErrorProvider component named errorProvider that validates the input values for each TextBox control.
You need to ensure that the input data for each TextBox control is automatically validated by using the ErrorProvider component.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Implement the validation rules inside the Validating event handler of each TextBox
control by throwing an exception when the value is invalid.
B) Add the following code segment to the InitializeComponent method of the Windows
Form.
this.errorProvider.DataSource = this.customerBindingSource;
C) Add the following code segment to the InitializeComponent method of the Windows
Form.
this.errorProvider.DataSource = this.customerBindingSource.DataSource;
this.errorProvider.DataMember = this.customerBindingSource.DataMember;
D) Implement the validation rules inside the TextChanged event handler of each TextBox
control by throwing an exception when the value is invalid.
E) Implement the validation rules inside the setter of each property of the Customer class
by throwing an exception when the value is invalid.

5. HOTSPOT
You use Microsoft .NET Framework 4 to create a Windows Presentation Framework (WPF)
application.
The application contains a DockPanel named DockPanel1. DockPanel1 contains a ListBox
named List1 and a Button named Button 1.
End-users discover that when they run the application, their mouse pointer disappears
when they hover over List1.
You run the application in debug mode and open the WPF Tree Visualizer.
You need to identify which property causes the issue.
Which property should you identify? (To answer, select the appropriate property in the
answer area.)

Solutions: