70-511 무료 덤프문제 온라인 액세스

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

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

You are developing a Windows Presentation Foundation (WPF) application that plays video clips.
The markup is as follows.

You need to ensure that the current running time of the video is automatically updated and displayed in CurrentRunTime.
What should you do?

• A.Register for the myMediaTimeline Changed event and add the following line in the event handler. CurrentRunTime.Text = myMediaElement.Clock.ToString()
• B.Register for the myMediaTimeline CurrentTimelnvalidated event and add the following line in the event handler.CurrentRunTime.Text = myMediaElement.Position.ToString()
• C.Register for the myMediaTimeline Changed event and add the following line in the event handler. CurrentRunTime.Text = myMediaElement.Position.ToString()
• D.Register for the myMediaTimeline CurrentTimelnvalidated event and add the following line in the event handler. CurrentRunTime.Text = myMediaElement.Clock.ToString()

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

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