You are developing a Windows Presentation Foundation (WPF) application.
You need to use XAML to create a custom control that contains two Button controls.
From which base class should you inherit?

• A. UIEIement
• B. UserControl
• C. FrameworkElement
• D. Button

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You plan to allow users to customize the background colors, foreground colors, and font style of the application. You also plan to add a TextBlock control to the application.
You write the following code fragment. (Line numbers are included for reference only.)

You need to ensure that the ContextMenu control is associated with the TextBlock control. You also need to ensure that the properties that can be customized are shown hierarchically.
Which code fragment should you insert at line 15?

• A. < Grid >
  < TextBlock TJidth="200" Height= "100" Background="LightBlue" / ></Grid >
  < Window. ContextMenu >
  < ContextMenu>
  < TextBlock Width="200" Height="100" Background="LightBlue" / >
  < MenuItem Header="Color Scheme" DataContext="{StaticResource colorschemes}"
  ItemsSource="{Binding Path*.}" ItemTemplate="{StaticResource ColorSchemeTemplate}"
  />
  < MenuItem Header="Font" DataContext="{StaticResource fonts}" ItemsSource="{Binding
  Path=.}" ItemTemplate="{StaticResource StringTemplate}" >< /MenuItem >
  < /ContextMenu >
  </Window.ContextMenu >
• B. < Grid >
  < Menu >
  < MenuItem Header="Color Scheme" DataContext="{StaticResource colorschemes}"
  ItemsSource="{Binding Path=.}" ItemTemplate="{StaticResource StringTemplate}" / >
  < MenuItem Header="Font" DataContext="{StaticResource fonts}" ItemsSource="{Binding
  Path=.}" ItemTemplate="{StaticResource StringTemplate}" />
  < /Menu>
  < TextBlock width-"200" Height-"100" Background-"LightBlue" / ></Grid >
• C. < Grid >
  <TextBlock Width="200" Height="100" Background="LightBlue" >
  < TextBlock.ContextMenu >
  < ContextMenu >
  < MenuItem Header="Color Scheme" DataContext="{StaticResource colorschemes)"
  ItemsSource="{Binding Path=.) ItemTemplate="{StaticResource ColorSchemeTemplate}" /
  >
  < MenuItem Header="Font" DataContext="{StaticResource fonts)" ItemsSource="{Binding
  Path=.}" ItemTemplate="{StaticResource StringTemplate}" >< /MenuItem >
  </ContextMenu >
  < /TextBlock.ContextMenu >
  < /TextBlock ></Grid >
• D. < Window.ContextMenu >
  < ContextMenu >
  < MenuItem Header="Color Scheme" DataContext="{StaticResource colorschemes)"
  ItemsSource="{ Binding Path ItemTemplate="{StaticRes ource StringTemplate}" />
  < MenuItern Header="Font" DataContext="{ StaticResource fonts!" ItemsSource=,,{
  Binding Path=.}" ItemTemplate="{StaticResource StringTemplate}" />
  < /ContextMenu >
  < /Window.ContextMenu >

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You write the following code fragment to bind a customer object to several controls in a window.
<TextBox Text="{Binding Path=CustomerName}" Name="textBoxl" />
When the application executes, you receive the following error message:
"System.Windows.Data Error: 35: BindingExpression path error: 'CustomerName' property not found on 'object' "Customer1 (HashCode=22613453). BindingExpression:Path=CustomerNarne; DataItem='Customer' (HashCode=22613453);
target element is 'TextBox' (Name='textBoxl'); target property is 'Text' (type 'String')"
You need to identify the source of the error.
What should you do?

• A. Use the WPF Visualizer.
• B. Use a Trace object.
• C. Use a PresentationTraceSources object.
• D. Use a Debug object.

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment.

You need to implement the MyProject.MyConverter class.
What should you do?

• A. Apply the TypeConverterAttribute attribute.
• B. Implement the IMultiValueConverter interface.
• C. Implement the IValueConverter interface.
• D. Inherit from the TypeConverter class.

You are developing a Windows Presentation Foundation (WPF) application.
The application's main window lists a series of controls horizontally until a control reaches the edge of the window. At that point, the series of controls continues on a new line. You need to ensure that this layout persists when the user changes the size of the window. What should you do?

• A. Place the controls in a grid and define the rows and columns using star sizing.
• B. Place each control in a WrapPanel control and set its Orientation property to Horizontal.
• C. Place each control in a DockPanel control and set its Dock property to Left.
• D. Place each control in a StackPanel control and set its Orientation property to Horizontal.