vb.net 組件循環操作

      '運用組件實現        For Each i As Object In Me.TabPage2.Controls           

                                             If TypeOf i Is CheckBox Then

                                                       Dim w As CheckBox 

                                                       w = CType(i, CheckBox) 

                                                       w.Checked = False

                                            End If  

                                       Next

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