Study with 70-511 Actual Test Questions

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains an ObservableCollection object named Pictures that contains several Picture objects. Each Picture object contains the Name and PictureFilePath properties.
You add a ListBox control to the application.
You need to ensure that the pictures are displayed in the ListBox control.
Which code fragment should you use?

• A. <ListBox ItemsSource="{Binding Source={StaticResource pictures}}">
  <ListBox. ItemTemplate>
  <DataTemplace>
  <Image Source="{Binding Source={StaticResource pictures},
  Path=PictureFilePath)"/></DataTemplate>
  </ListBox.ItemTemplate>
  </ListBox>
• B. <ListBox ItemsSource="{Binding Source={StaticResource
  pictures}}"><ListBox.Item>Template><DataTernplate>
  <TextBlock>
  <TextBlock.Text>
  <Binding Path="PictureFilePath" />
  </TextBlock.TextX/TextBlock>
  </DataTemplate>
  </ListBox. ItemTeioplate>
  </LiscBox>
• C. <ListBox ItemsSource="{Binding Source={StaticResource
  pictures))"><ListBox.ItemTemplate>
  <DataTemplate>
  <Image Source-"{Binding Path PictureFilePath>"/>
  </DataTemplate>
  </ListBox.ItemTemplate>
  </ListBox>
• D. <ListBox ItemsSource="{Binding Source={StaticResource pictures}>">
  <ListBox.ItemTemplate>
  <DataTemplate>
  <TextBlockxTextBlock.Text>
  <Binding Path="Name" />
  </TextBlock.TextX/TextBlock>
  </DataTemplate>
  </ListBox.ItemTemplate>
  </ListBox>

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' "Customer" (HashCode=22613453)' BindingExpression:Path=CustomerName; 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 a PresentationTraceSources object.
• B. Use a Trace object.
• C. Use the WPF Visualizer.
• D. Use a Debug object.

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 15. NotifyPropertyChanged(value)
• B. Insert the following code at line 17. NotifyPropertyChanged("Data")
• C. insert the following line at line 17. NotifyPropertyChanged(value)
• D. Insert the following code at line 15. Not ifyPropertyChanged("Data")

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 IValueConverter interface.
• C. Implement the IMultiValueConverter interface.
• D. Inherit from the TypeConverter class.

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You add a custom command as a resource. The key of the command is saveCommand.
You write the following code fragment. (Line numbers are included for reference only.)
01 <Canvas>
02
03 <Button>
04
05 </Button>
06 </Canvas>
You need to ensure that saveCommand is executed when the user clicks the Button control.
What should you do?

• A. Insert the following code fragment at line 04.
  <Button.CommandBindings>
  <ConrniandBinding Command="{StaticResource saveCommand}"
  /></Button.CommandBindings>
• B. Insert the following code fragment at line 02.
  <Canvas.CommandBindings>
  <CommandBinding Command="{StaticResource saveConmand)"
  /></Canvas.CommandBindings>
  Replace line 03 with the following code fragment.
  <Button CommandTarget="{Binding RelativeSource={RelativeSource Self), Path=Parent}">
• C. Insert the following code fragment at line 02.
  <Canvas.Commandsxndings>
  <CommandBinding Command="{StaticResource saveCommand}"
  /></Canvas.CommandBindings>
  Replace line 03 with the following code fragment.
  <Button CommandParameter="{Binding RelativeSource={RelativeSource Self),
  Path=Parent>">
• D. Insert the following code fragment at line 04.
  <Button.Comrtiand>
  <StaticResource ResourrceKey="saveComr[iand" />
  </Button.Command>