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

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

2. You are developing a Windows Presentation Foundation (WPF) application with the following class. (Line numbers are included for reference only

The UI is not being updated when the Data property is set.
You need to ensure that the DisplayData class correctly updates the UI when the Data property is set.
What should you do?

A) Insert the following code at line 14. NotifyPropertyChanged("Data");
B) Insert the following code at line 16. NotifyPropertyChanged("Data");
C) Insert the following line at line 16. NotifyPropertyChanged(value);
D) Insert the following code at line 14. NotifyPropertyChanged(value);

3. You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You add a TreeView control to show the hierarchical structure of orders and order details. Each order contains an ObservableCollection named OrderDetails.
You write the following code fragment. (Line numbers are included for reference only.)

---
You need to ensure that the TreeView control meets the following requirements:
Each order is shown as a TreeView node.
The order nodes have order detail nodes as children.
The order detail nodes have no children.
Which code fragment should you insert at line 07?

A) <HierarchicalDataTemplate x:Key="OrderTemplate"
ItemsSource="{Binding Path=orders}" DataType="Order">
<TextBlock Text="{Binding Path=.}" />
</HierarchicalDataTemplate>
B) <HierarchicalDataTemplate x:Key="OrderTemplate"
ItemsSource="{Binding Path=OrderDetails>"
ItemTeinplate="{StaticResource OrderDetailTemplate} ">
<TextBlock Text="{Binding Path=.}" />
</HierarchicalDataTemplate>
C) <HierarchicalDataTemplate x:Key="OrderTemplate" DataType="Order"
ItemTernplate="{StaticResource OrderDetailTemplate} ">
<TextBlock Text="{Binding Path=.}" />
</HierarchicalDataTemplate>
D) <HierarchicalDataTemplate x:Key="OrderTemplate"
ItemsSource="{Binding Path=orders}"
ItemTemplate="{StaticResource OrderDetailTemplate}">
<TextBlock Text="{Binding Path=.}" />
</HierarchicalDataTemplate>

4. You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains a form named frmMain that contains a button named btnSave.
You create a ProgressBar control named saveProgress. Initially, saveProgress is not displayed on frmMain.
When a user clicks btnSave, you have the following requirements:
- saveProgress is slightly visible after 0.2 seconds
- saveProgress is fully visible after 1 second
You need to declare the corresponding storyboard.
You write the following code fragment. (Line numbers are included for reference only.)
01 <Storyboard x:Key="animateProgress" TargetName="saveProgress">
03 </Storyboard>
Which code fragment should you insert at line 02 to complete the declaration?

A) <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility"><DiscreteObjectKeyFraitie KeyTiine="0" Value="{x:Static Visibility.Collapsed}" /><DiscreteObjectKeyFrame KeyTirae="l" Value="{x:Static Visibility.Visible}" /></ObjectAniiriationUsingKeyFrames>
B) <Object An imationUsingKeyFr antes Storyboard. TargetProperty=, "Visibility"><DiscreteObjectKeyFrame KeyTiroe="00:00:00" Value="{x:Static Visibility.Collapsed}" /><DiscreteObjectKeyFrame KeyTiitie="00:00:01" Value="{x:Static Visibility.Visible}" /></Object AnimationUsingKeyFraities>
C) <DoubleAnimation Storyboard. TargetProperty= Opacity" Duration="1" From="0" To="1" />
D) <DoubleAnimation Storyboard.TargetProperty="Opacity" Duration="00:00:01" From="0" To="l" />

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You discover that when the application runs, a user control is not rendered correctly.
You need to find out the user interface (UI) element of the window that is causing the rendering problem.
What should you do?

A) Use the Local Window.
B) Use the WPF Visualizer.
C) Generate a trace log by using IntelliTrace.
D) Set a breakpoint at the control. Run the application.

Solutions: