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Microsoft TS: Windows Applications Development with Microsoft .NET Framework 4 Sample Questions:

1. You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code segment. (Line numbers are included for reference only.)

You add the following code fragment within a WPF window control.

You need to ensure that the Contact class contains a business rule to ensure that the ContactName property is not empty or NULL. You also need to ensure that the TextBox control validates the input data.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two).

A) Replace line 01 with the following code segment. Public Class Contact Implements INotifyPropertyChanging
B) Add the following code segment at line 12. Public Readonly Property [Error] () As String Get Throw New Exception( string.Empty ) End Get End Property Public Default Readonly Property Item(columnName As String) As String Get If columnName = "ContactName" AndAlso String.IsNullOrEmpty(Me.ContactName) Then Return "Contact name is re quired" End If Return Nothing End Get End Property
C) Replace line 01 with the following code segment. Public Class Contact Implements IDataErrorInfo
D) Add the following code segment at line 03. Public Event PropertyChanging As PropertyChangingEventHandler Modify line 08 with the following code segment: Set If Me.PcopertyChanging <> Nothing Then Proper:tyChanging(Me, New PropertyChangingEventArgs("ContactName")) End If If String. IsNull OrEmpty(value) Then Throw New ApplicationExceptionf'Contact name is required") End If contactNaroe = value End Set
E) Replace line 01 with the following code segment. Public Class Contact Inherits ValidationRule

2. You plan to create a Windows Presentation Foundation (WPF) user control.
You need to create a WPF user control that contains 12 areas that are identical in size.
The solution must meet the following requirements:
- Ensure that if the control is resized, the relative size of the areas will remain the same. - Minimize development effort.
Which control should you use?

A) WrapPanel
B) Viewbox
C) StackPanel
D) UniformGrid
E) DockPanel

3. 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"; C
B) order_DetailsDataGridViev.DataSource = ordersBindingSource; order_DetailsBindingSource.Filter = "UnitPrice > 20"; productsBindingSource.Sort "ProductName";
C) productsDataGridView.DataSource = ordersBindingSource; productsBindingSource.Filter = "UnitPrice > 20"; productsBindingSource.Sort = "ProductName";
D) ordersBindingSource.DataSource = producxsBindingSource; ordersBindingSource.DataMember = "FK_Order_Details_Products"; productsBindingSource.Filter = "UnitPrice > 20"; productsBindingSource.Sort = ProductName";

4. You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
The application contains a set of Button controls.
You need to ensure that any button that contains no content is highlighted when the mouse pointer is located over it.
Which code fragment should you use?

A) < Style TargetType="{x:Type Button}" >
...
< Setter Property="Background" Value="Yellow" / >
< Style.Triggers >
< MultiTrigger >
< MultiTrigger.Conditions >
< Condition Property="IsMouseOver" Value="True" /
< Condition Property="Content" Value="{x:Null}" /
< /MultiTrigger.Conditions >
< /MultiTrigger >
< /Style.Triggers >
< /Style >
B) < Style TargetType="{x:Type Button}" >
...
< Style.Triggers >
< Trigger Property="IsMouseOver" Value="True" >
< Setter Property="Background" Value="Yellow" / >
< /Trigger >
< Trigger Property="Content" Value="{ x :Null} " >
< Setter Property="Background" Value="Yellow" / >
< /Trigger >
< /Style.Triggers >
</Style >
C) <Style TargetType="{x:Type Button)" >
...
< Style.Triggers >
< Trigger Property="IsMouseOver" Value="True" >
< Setter Property="Background" Value="Yellow" / >
< /Trigger >
< Trigger Property="Content" Value="Empty" >
< Setter Property="Background" Value="Yellow" / >
< /Trigger >
< /Style.Triggers >
</Style >
D) < Style TargetType="{x:Type Button)" >
...
< Setter Property="Background" Value="Yellow" />
< Style.Triggers >
< MultiTrigger >
< MultiTrigger.Conditions >
< Condition Property="IsHouseOver" Value="True" />
< Condition Property="Content" Value="Empty" / >
< /MultiTrigger.Conditions >
< /MultiTrigger >
< /Style.Triggers >
</Style >

5. You are developing a Windows Presentation Foundation (WPF) application. You use the following markup segment to add a Button control to the design surface of the MainWindow.xaml file.

You add the following code segment to the code-behind file for HainWindow.

The application will be deployed in an environment that requires alternate key mappings.
You need to remove the CTRL+ C input gesture and replace it with the ALT+ C input gesture.
What should you do?

A) Option A
B) Option B
C) Option D
D) Option C

Solutions: