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单选题

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?()

发布日期:2020-04-10

You are creating a Windows Forms Application by us...
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.

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