You are developing a Windows Presentation Foundation (WPF) application.
An event triggers a workflow such that a parent control executes the event handlers before the child controls.
You need to ensure that if a parent control's event handler encounters an error, the subsequent handlers are not called.
What should you do?

• A. Use handlers for a tunneling routed event and mark the event as handled in the Finally portion of a Try-Catch-Finally code block.
• B. Use handlers for a bubbling routed event and set the Handled property of the RoutedEventArgs object to True in the Catch portion of a Try-Catch-Finally code block.
• C. Use handlers for a bubbling routed event and mark the event as handled in the case of a problem.
• D. Use handlers for a tunneling routed event and mark the event as handled in the case of a problem.

DRAG DROP
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
The application contains a window that has two buttons named Copy and Paste.
You need to ensure that the buttons have a black background color and white foreground color.
What should you do? (Develop the solution by selecting and ordering the required code snippets. You may not need all of the code snippets.)

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You create a Button control for the application.
You need to ensure that the application meets the following requirements:
- When the mouse pointer is over the Button control, the background color of the button is set to red and the Button control appears bigger. - When the mouse pointer is not over the Button control, the button returns to its original state.
What should you do?

• A. Create a ScaleTransform class. Bind the ScaleX and ScaleY properties of the Button control to the Background property by using a custom value converter.
• B. Create a StoryBoard animation. Add an EventTrigger class to the Button control that begins the StoryBoard animation.
• C. Add a method named ChangeAppearance in the code-behind file. Subscribe the ChangeAppearance method to the MouseEnter event of the Button control,
• D. Create a template. Declare a VisualState element in the template.

You are developing a Windows Presentation Foundation (WPF) application. You use the following markup segment to add a Button control to the design surface of the MainWindow.xaml file.

You add the following code segment to the code-behind file for HainWindow.

The application will be deployed in an environment that requires alternate key mappings.
You need to remove the CTRL+ C input gesture and replace it with the ALT+ C input gesture.
What should you do?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

You are developing a Windows Presentation Foundation (WPF) application. You have the following style defined in the app.xaml file.
<Style x:Key="btnItalic" x:Naitie= "styleItalic"
TargetType="{x:Type Button}">
<Setter Property="FontStyle" Value="Italic"/></Style>
You need to apply this style to a button named button1 in the application at run time.
Which code segment should you use?

• A. button1.Style = this.FindResource("styleltalic") as Style;
• B. button1.Style = this.FindName("styleltalic") as Style;
• C. button1.Style = this.FindResoucce("btnltalic") as Style;
• D. button1.Style = this.FindName("btnltalic") as Style;