You are creating a Windows Forms Application by using the .NET Framework 3.5.You plan to design a new control that will be used on multiple forms in the app.You need to ensure that the control meets the following requirement: (1)It retrieves data from a MSSQL Server 2008 database instance. (2)It uses WPF classes to display data. (3)It uses user-customizable actions when the control is first painted on the form. What should you do?()
- A、Create a new custom class for the control that is derived from the Control class.
- B、Create a new custom class for the control that is derived from the UserControl class.
- C、Create a new custom class for the control that is derived from the ContentControl class.
- D、Create a new custom class for the control that is derived from the ContentPresenter class.
正确答案:B
答案解析:有
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