You are creating a Windows Forms application by using the .NET Framework 3.5. The application requires a thread that accepts a single integer parameter. You write the following code segment （Line numbers are included for reference only.） Thread myThread = new Thread（new ParameterizedThreadStart（DoWork）） ； myThread.Start（100）； You need to declare the method signature of the DoWork method. Which method signature should you use？（）

A. public void DoWork（）；
B. public void DoWork（int nCounter）；
C. public void DoWork（object oCounter）；
D. public void DoWork（Delegate oCounter）；

You are creating a Windows application for graphical image processing by using the .NET Framework 3.5. You create an image processing function and a delegate.You plan to invoke the image processing function by using the delegate.You need to ensure that the calling thread meets the following requirements： （1）It is not blocked when the delegate is running （2）It is notified when the delegate is complete What should you do？（）

A. Call the Invoke method of the delegate.
B. Call the BeginInvoke and EndInvoke methods of the delegate in the calling thread.
Call the BeginInvoke method by specifying a callback method to be executed when the delegate is complete.Call the EndInvoke method in the callback method.
D. Call the BeginInvoke method by specifying a callback method to be executed when the delegate is complete.Call the EndInvoke method of the delegate in the calling thread.

You are creating a Windows Forms application by using the .NET Framework 3.5. You create a new form in your application.You add 100 controls at run time in the Load event handler of the form. Users report that the form takes a long time to get displayed. You need to improve the performance of the form. What should you do？（）

A. Call the InitLayout method of the form before adding all the controls.Call the PerformLayout method of the form after adding all the controls.
B. Call the InitLayout method of the form before adding all the controls.Call the ResumeLayout method of the form after adding all the controls.
Call the SuspendLayout method of the form before adding all the controls.Call the PerformLayout method of the form after adding all the controls.
D. Call the SuspendLayout method of the form before adding all the controls.Call the ResumeLayout method of the form after adding all the controls.

You are creating a Windows Forms application for a financial service provider by using the .NET Framework 3.5. You have to implement a multiple document interface （MDI） in the application to allow users to open multiple financial documents simultaneously.You need to ensure that whenever the child MDI form is created， the application displays a message in the title bar of the parent MDI that a child form has received focus. What should you do？（）

A. Implement theActivated event
B. Implement the MdiChildActivate event
C. Override the OnParentVisibleChanged method
D. Override the OnParentBindingContextChanged method

You are creating a Windows Forms application by using the .NET Framework 3.5. The application displays employee names by using the TreeView control. You need to implement the drag and drop functionality in the TreeView control.Which two actions should you perform？（）

A. Set theAllowDrag property to true.Create an event handler for the DragOver event.
B. Set theAllowDrag property to true.Create an event handler for the ItemDrag event to call the DoDragDrop method.
C. Set theAllowDrag property to true.Create an event handler for the DragEnter event to call the DoDragDrop method .
D. Create an event handler for the DragDrop event to handle the move or copy by itself.
E. Create an event handler for the DragEnter event to handle the move or copy by itself.

You create Windows Forms applications by using the .NET Framework 3.5.You plan to deploy a new application.You need to ensure that on deployment， the application meets the following requirements： （1）It is executed on the client computer （2）It is removed from the client computer after the application is closed （3）It is not displayed in theAdd/Remove programs panel on the client computer What should you do？（）

A. Deploy the application to a central network server.Access the application by using the Remote Desktop Connection tool.
B. Deploy the application by using the ClickOnce technology.Use the Mage exe tool to set the Online Only option in the deployment manifest.
C. Deploy the application by using the ClickOnce technology.Set the Install attribute of the deployment tag to true in the deployment manifest.
Deploy the application to a CDROM by using the ClickOnce technology.Execute the application from the CDROM

You plan to deploy a new Microsoft Visual Studio Tools for Office（VSTO） add-in for Excel.You need to ensure that the VSTO add-in is deployed appropriately.What should you do？（）

A. Use the ClickOnce technology.Include the .Net FrameWork 3.5 as a requirement
B. Use the Windows Installer deployment.Include a deployment manifest that has been signed by using Authenticode certificate.
C. Use the ClickOnce technology.Include the Microsoft Office 2007 Primary Interop assemblies as a prerequisite.
D. Use the Windows Installer deployment.Inclued a deployment manifest which specifies that only administrative permission are requied.

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You are creating a Windows Forms application by using the .Net Framework 3.5.You create an instance of a Backgroundworker component named backgroundWorker1 to process operations that take a long time.You discover that when the application attempts to report the progress，you receive a System.InvalidOperationException exception when executing thebackgroundWorker1.ReportProgress method.You need to configure the BackgroundWorker component appropriately to prevent the application from generating exceptions. What should yo do？（）

A. Set the Result property of the DoWorkEventArgs instance to True before you attempt to report the progress.
B. Set the CancellationPending property of backgroundWorker1 to True before you attempt to report the background process
C. Set the WorkerReportsProgress property of backgroundWorker1 to True before you attempt to report the background process.
D. Report the progress of the background process in the backgroundWorker1_ProgressChanged event.

You are developing a Windows Forms Application by using the .NET Framework 3.5.You plan to design a composite custom control for the application. You include a ListBox control has a property that provides the item count of the ListBox control. You need to ensure that the property cannot be accessed at design time. Which attribute should you use？（）

A. [Bindable（false）]
B. [DesignOnly（false）]
C. [EditorBrowsable（EditorBrowsableState.Never）]
D. [Browsable（false）]