You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains the following code fragment.
<StackPanel>
<TextBlock Style="{StaticResource MyStyle)">Hello World</TextBlock>
<Button Style="{StaticResource MyStyle} ">Ok</Button></StackPanel>
You need to define a style that applies the following properties to the text in the StackPanel object:
- FontSize = 32
- FontWeight = Bold
Which code fragment should you use?

• A. <Style x:Key="MyStyle" TargetType-"{x:Type Control}">
  <Setter Property="TextElement.FontSize" Value="32" />
  <Setter Property-"TextElement.FontWeight" Value="Bold" />
  </Style>
• B. <Style x:Key="MyStyle" TargetType-"{x:Type UserControl)">
  <Setter Property="Control.FontSize" Value="32" /> <Setter Property="Control.FontWeight" Value="Bold" /> </Style>
• C. <Style x:Key="MyStyle" TargetType="{x:Type TextElement}">
  <Setter Property="Control.FontSize" Value="32" />
  <Setter Property="Control.FontWeight" Value="Bold" />
  </Style>
• D. <Style x:Key="MyStyle" TargetType="{ x : Type Framework-Element} ">
  <Setter Property="TextElement.FontSize" Value="32" />
  <Setter Property="TextElement.FontWeight" Value="Bold" />
  </Style>

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:Name="styIeItalic"
TargetType="{ x:Type Button}">
Setter Property="FontStyle" Value="Itallc"/></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 = TryCast(Me.FindName("styleItalic"),Style)
• B. button1.Style = TryCast(Me.FindResource("styleItalic"), Style)
• C. button1.Style = TryCast(Me.FindResource("btnItalic"), Style)
• D. button1.Style = TryCast(Me.FindName("btnItalic"), Style)

You are developing a Windows Presentation Foundation (WPF) application. You add several TextBox controls within a StackPanel control. You next add several Image controls within a second StackPanel control.
During testing, you discover that some of the textboxes do not appear in the proper layout.
You need to quickly search for the textboxes and view their properties to identify which ones are incorrect.
What should you do?

• A. Open the Watch window and select the XML Visualizer.
• B. Open the Autos window and select the HTML Visualizer.
• C. Open the Locals window and select the WPF Tree Visualizer.
• D. Open the QuickWatch window and select the Text Visualizer.

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You add a property named ServiceContext to a control.
You need the value of ServiceContext to flow to the child controls exactly like the value of the DataContext property of the FrameworkElement class.
What should you do?

• A. Declare a new property.
  In the get and set methods of the new property, create an instance of the TraversalRequest
  class.
• B. Declare a new property.
  In the get method of the new property call VisualTreeHelper.GetParent.
  In the set method of the new property, call VisualTreeHelper.GetChild.
• C. Inherit the control class from the Dependency-Object class.
• D. Register a dependency property.
  In the options settings of the property metadata, specify the Inherits option.

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