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70-502VBChinese Exam

TS: Microsoft .NET Framework 3.5-Windows Presentation Foundation

  • Exam Number/Code : 70-502VBChinese
  • Exam Name : TS: Microsoft .NET Framework 3.5-Windows Presentation Foundation
  • Questions and Answers : 90 Q&As
  • Update Time: 2011-03-30
  • Price: $ 115.00 $ 99.00

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Exam : Microsoft 70-502VBChinese
Title : TS: Microsoft .NET Framework 3.5 - Windows Presentation Foundation


1. 您正在使用 Microsoft .NET Framework 3.5 创建一个 Windows Presentation Foundation 应用程序。
您向 Window 元素中添加一个 CommandBinding 元素。该命令具有一个键盘笔势 Ctrl+H。Window 元素中包含下面的 MenuItem 控件。
<MenuItem Header="Highlight Content"
Command="local:CustomCommands.Highlight" />
您需要确保当焦点切换到不包含任何文本的 TextBox 控件时,MenuItem 控件处于禁用状态而且该命令不可执行。
您应该怎么办?
A. 在 TextBox 控件的 GotFocus 事件处理程序中,设置 MenuItem 控件的 IsEnabled 属性。
B. 将该命令的 CanExecute 属性设置为 Highlight_CanExecute。
将以下方法添加到该窗口的代码隐藏文件中。
Private Sub Highlight_CanExecute(ByVal sender As Object, _
ByVal e As CanExecuteRoutedEventArgs)
Dim txtBox As TextBox = CType(sender, TextBox)
e.CanExecute = (txtBox.Text.Length > 0)
End Sub
C. 将该命令的 CanExecute 属性设置为 Highlight_CanExecute。
将以下方法添加到该窗口的代码隐藏文件中。
Private Sub Highlight_CanExecute(ByVal sender As Object, _
ByVal e As CanExecuteRoutedEventArgs)
Dim txtBox As TextBox
txtBox = CType(e.Source, TextBox)
e.CanExecute = (txtBox.Text.Length > 0)
End Sub
D. 将该命令的 CanExecute 属性设置为 Highlight_CanExecute。
将以下方法添加到该窗口的代码隐藏文件中。
Private Sub Highlight_CanExecute(ByVal sender As Object, _
ByVal e As CanExecuteRoutedEventArgs)
Dim Menu As MenuItem = CType(e.Source, MenuItem)
Dim txtBox As TextBox = CType(Menu.CommandTarget, TextBox)
Menu.IsEnabled = (txtBox.Text.Length > 0)
End Sub
Answer: C

2. 您正在使用 Microsoft .NET Framework 5 创建一个 Windows Presentation Foundation 应用程序。
该应用程序定义一个 BrowserWindow 类。BrowserWindow 类的每个实例允许用户在一个单独的窗口中浏览网站。在打开新的浏览器窗口时,用户将重定向到一个预定义的 URL。
您编写以下代码段。
01 Private Sub OpenNewWindow(ByVal sender As Object, _
02 ByVal e As RoutedEventArgs)
03 Dim newWindowThread As New Thread(New _
04 ThreadStart(AddressOf NewThreadProc))
05
06 newWindowThread.Start()
07 End Sub
08 Private Sub NewThreadProc()
09
10 End Sub
您需要确保满足以下要求:
·在创建其他浏览器窗口时,应用程序的主窗口不被阻止。
·在应用程序的主窗口关闭时,应用程序即执行完毕。
您应该怎么办?
A. 在第 05 行处插入以下代码段。
newWindowThread.SetApartmentState(ApartmentState.STA)
newWindowThread.IsBackground = True
在第 09 行处插入以下代码段。
Dim newWindow As New BrowserWindow()
newWindow.Show()
Dim app As New Application()
app.Run(newWindow)
B. 在第 05 行处插入以下代码段。
newWindowThread.IsBackground = True
在第 09 行处插入以下代码段。
newWindowThread.SetApartmentState(ApartmentState.STA)
Dim newWindow As New BrowserWindow()
newWindow.Show()
Dim app As New Application()
app.Run(newWindow)
C. 在第 05 行处插入以下代码段。
newWindowThread.SetApartmentState(ApartmentState.STA)
newWindowThread.IsBackground = False
在第 09 行处插入以下代码段。
Dim newWindow As New BrowserWindow()
System.Windows.Threading.Dispatcher.Run()
newWindow.Show()
D. 在第 05 行处插入以下代码段。
newWindowThread.SetApartmentState(ApartmentState.STA)
newWindowThread.IsBackground = True
在第 09 行处插入以下代码段。
Dim newWindow As New BrowserWindow()
newWindow.Show()
System.Windows.Threading.Dispatcher.Run()
Answer: D

3. 您正在使用 Microsoft .NET Framework 3.5 创建一个 Windows Presentation Foundation 应用程序。
该应用程序使用若干个异步操作来计算显示给用户的数据。名为 tommorowsWeather 的操作执行将由其他操作使用的计算。
您需要确保 tommorowsWeather 以尽可能高的优先级运行。
您应该使用哪个代码段?
A. tomorrowsWeather.Dispatcher.BeginInvoke( _
System.Windows.Threading.DispatcherPriority.Normal, _
New OneArgDelegate(AddressOf UpdateUserInterface), weather)
B. tomorrowsWeather.Dispatcher.BeginInvoke( _
System.Windows.Threading.DispatcherPriority.DataBind, _
New OneArgDelegate(AddressOf UpdateUserInterface), weather)
C. tomorrowsWeather.Dispatcher.BeginInvoke( _
System.Windows.Threading.DispatcherPriority.Send, _
New OneArgDelegate(AddressOf UpdateUserInterface), weather)
D. tomorrowsWeather.Dispatcher.BeginInvoke( _
System.Windows.Threading.DispatcherPriority.Render, _
New OneArgDelegate(AddressOf UpdateUserInterface), weather)
Answer: C

4. 您使用 Microsoft .NET Framework 3.5 创建了一个 Windows Presentation Foundation 应用程序。该应用程序名为 EnterpriseApplication.exe,通过网络运行。
您使用设计器在用户作用域级别向 Settings.settings 文件中添加 WindowSize 参数和 WindowPosition 参数。窗口的大小和位置是从用户配置文件读取的。
该应用程序必须针对执行它的用户保持最初的窗口大小和位置。
您需要确保满足以下要求:
·每个用户的窗口大小都保存在用户配置文件中。
·在用户退出应用程序后保留用户设置。
您应该使用哪个配置设置?
A. Private Sub OnClosing(ByVal sender As Object, ByVal e _
As System.ComponentModel.CancelEventArgs)
My.Settings.Default.WindowPosition = New Point(Me.Left, Me.Top)
My.Settings.Default.WindowSize = New Size(Me.Width, Me.Height)
My.Settings.Default.Save()
End Sub
B. Private Sub OnClosing(ByVal sender As Object, ByVal e As _
System.ComponentModel.CancelEventArgs)
Dim appKey As RegistryKey = _
Registry.CurrentUser.CreateSubKey("SoftwareEnterpriseApplication")
Dim settingsKey As RegistryKey = _
appKey.CreateSubKey("WindowSettings")
Dim windowPositionKey As RegistryKey = _
settingsKey.CreateSubKey("WindowPosition")
Dim windowSizeKey As RegistryKey = _
settingsKey.CreateSubKey("WindowSize")
windowPositionKey.SetValue("X", Me.Left)
windowPositionKey.SetValue("Y", Me.Top)
windowSizeKey.SetValue("Width", Me.Width)
windowSizeKey.SetValue("Height", Me.Height)
End Sub
C. Private Sub OnClosing(ByVal sender As Object, ByVal e As _
System.ComponentModel.CancelEventArgs)
Dim doc As New System.Xml.XmlDocument()
doc.Load("EnterpriseApplication.exe.config")
Dim nodePosition As System.Xml.XmlNode = _
doc.SelectSingleNode("//setting[@name='WindowPosition']")
nodePosition.ChildNodes(0).InnerText = String.Format("{0},{1}", _
Me.Left, Me.Top)
Dim nodeSize As System.Xml.XmlNode = _
doc.SelectSingleNode("//setting[@name='WindowSize']")
nodeSize.ChildNodes(0).InnerText = String.Format("{0},{1}", _
Me.Width, Me.Height)
doc.Save("UserConfigDistractor2.exe.config")
End Sub
D. Private Sub Window_Closing(ByVal sender As Object, ByVal e As _
System.ComponentModel.CancelEventArgs)
Dim sw As New StreamWriter("EnterpriseApplication.exe.config", True)
sw.WriteLine("<EnterpriseApplication.Properties.Settings>")
sw.WriteLine("<setting name=""WindowSize"" serializeAs=""String"">")
sw.WriteLine(String.Format("<value>{0},{1}</value>", Me.Width, _
Me.Height))
sw.WriteLine("</setting>")
sw.WriteLine("<setting name=""WindowPosition"" _
serializeAs=""String"">")
sw.WriteLine(String.Format("<value>{0},{1}</value>", Me.Left, _
Me.Top))
sw.WriteLine("</setting>")
sw.WriteLine("</UserConfigProblem.Properties.Settings>")
sw.Close()
End Sub
Answer: A

5. 您正在使用 Microsoft .NET Framework 3.5 创建一个 Windows Presentation Foundation 应用程序。
您为该应用程序创建一个窗口。
您需要确保满足以下要求:
·使用 ListBox 控件以双列格式显示字符串数组。
·ListBox 控件中数据的流动方向为从左向右、自上向下。
您应该怎么办?
A. 使用按如下方式定义的 ListBox 控件。
<ListBox Name="myList">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<UniformGrid Columns="2"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
使用下面的 VB.NET 代码将字符串数组与 ListBox 控件关联。
myList.ItemsSource = arrayOfString
B. 使用按如下方式定义的 ListBox 控件。
<ListBox Name="myList">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
使用下面的 VB.NET 代码将字符串数组与 ListBox 控件关联。
myList.ItemsSource = arrayOfString
C. 使用按如下方式定义的 ListBox 控件。
<ListBox Name="myList">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
使用下面的 VB.NET 代码将字符串数组与 ListBox 控件关联。
myListView.ItemsSource = arrayOfString
D. 使用按如下方式定义的 ListBox 控件。
<ListBox Name="myList">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
</Grid>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
使用下面的 VB.NET 代码将字符串数组与 ListBox 控件关联。
myList.ItemsSource = arrayOfString
Answer: A

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