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You are developing a Windows Presentation Foundation (WPF) application.
An element binding consistently throws errors because the data retrieval is slow.
You need to ensure that the PresentationTraceSource binding is configured to debug the source of these errors.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two).

• A. Add the following markup segment to the window definition.
  xmlns: diagnostics=
  "clr-namespace:Microsoft.Build.Debugging;
  assembly = Microsoft.Build"
• B. Add the following markup segment to the problem element,
  "diagnostics:ConsoleTraceListener"
• C. Add the following markup segment to the window definition.
  xmlns:diagnostics=
  "clr-namespace:System.Diagnostics;assembly=WindowsBase"
• D. Add the following markup segment to the problem element.
  "diagnostics: PresentationTraceSources . TraceLevel=High"

You use Microsoft .NET Framework 4 to create a Windows Forms application. You have a dataset as shown in the following exhibit.

You plan to add a DataGridView to display the dataset.
You need to ensure that the DataGridView meets the following requirements:
Shows Order Details for the selected order.
Shows only Order Details for items that have UnitPrice greater than 20.
Sorts Products by ProductName
Which code segment should you use?

• A. order_DetailsBindingSource.DataSource = ordersBindingSource order_DetailsBindingSource.DataMember = "FK_Order_Details_Orders" order_DetailsBindingSource.Filter = "UnitPrice > 20" productsBindingSource.Sort = "ProductName"
• B. ordersBindingSource.DataSource = productsBindingSource ordersBindingSource.DataMember = "FK_Order_Details_Products" productsBindingSource.Filter = "UnitPrice > 20" productsBindingSource. Sort =
  ---
  "ProductName"
• C. order_DetailsDataGridView.DataSource = ordersBindingSource order_DetailsBindingSource.Filter "UnitPrice:> 20" productsBindingSource.Sort = "ProductName"
• D. productsDataGridView.DataSource = ordersBindingSource productsBindingSource.Filter = "UnitPrice > 20" productsBindingSource.Sort = "ProductName"

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You write the following code fragment.
< StackPanel TextBox.PreviewTextInput="StackPanel_PreviewTextInput" >
< TextBox Name="TxtBoxA"/>
< TextBox Naroe="TxtBoxB"/>
< TextBox Name="TxtBoxC"/>
< /StackPanel>
You create an event handler named StackPanel_PreviewTextInput. You also have a collection of strings named Keywords.
You need to ensure that TxtBoxA and TxtBoxB do not contain any of the strings in the Keywords collections.
Which code segment should you use?

• A. Handledfalse;
  return;
  }
  }
• B. Handled = false; } }
• C. private void StackPanel PreviewTextlnput(
  object sender, TextCompositionEventArgs e)
  {
  FrameworkElement feSource = sender as FrameworkElement;
  if (feSource.Name == "TxtBoxA" || feSource.Name == "TxtBoxB")
  {
  foreach(string keyword in Keywords)
  {
  if(e.Text.Contains(keyword) )
  {
• D. Handled = false;
  }
  }
• E. Handled = true; return; )
  }
• F. Handled = false; return;
  }
  }
• G. Handled = true; return;
  }
  }
• H. Handled = true;
  }
  }
• I. private void StackPanel_PreviewTextInput(
  object sender, TextCompositionEventArgs e) (
  FrameuorkEleroent feSource sender as Framework Element:
  if (resource.Name == "TxtBoxA" || feSource.Name == "TxtBoxB")
  {
  foreach(string keyword in Keywords)
  if(e.Text.Contains(keyword) )
  {
• J. private void StackPanel_PreviewTextInput(
  object sender, TextCompositionEventArgs e)
  {
  FrameworkElement feSource = e. Source as FrameworkElement;
  if (feSource.Name == "TxtBoxA" || feSource.Name == "TxtBoxB")
  {
  foreach(string keyword in Keywords) {
  if(e.Text.Contains(keyword) )
  {
• K. private void StackPanel_PreviewTextInput(
  object sender, TextCompositionEventArgs e)
  (
  FrameworkElement feSource = e.Source as FrameworkElement; if
  (feSource.Name == "TxtBoxA" || feSource.Name == "TxtBoxB")
  {
  foreach(string keyword in Keywords)
  {
  if(e.Text.Contains(keyword))
  {
• L. Handled = true;
  } }

You are developing a Windows Presentation Foundation (WPF) application that displays opportunities from List<T> named Leads, where T is a class named Lead. The Lead class contains the properties Title and Revenue.
You add a DataGrid control named dgQualifiedLeads to the MainWindow.xaml file. You set the ItemSource property of dgQualifiedLeads to Leads as follows. (Line numbers are included for reference only.)

You need to ensure that CollectionViewSource is used to filter the list to display only Lead objects with revenue of more than $1,000.
What should you do?

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

You have an App.xaml file that contains the following markup:

You need to create a TextBlock named txtBlock1 that uses PageTitleStyle.
Which code should you use?

• A. <TextBlock x:Name= "txtBlock" Style= "{ PageTitleStyle"/>
• B. <TextBlock x:Name= "txtBlock" Style= "{DynamicResource PageTitleStyle}"/>
• C. <TextBlock x:Name= "txtBlock" Style= "{DynamicResources:PageTitleStyle"/>
• D. <TextBlock x:Name= "txtBlock" Style= "{Binding DynamicResources:PageTitleStyle}"/