?はすでに完成し、以下のコードです。 Private Sub Listbox1_Click() Dim listbox As Integer Listpos = UserForm1.ListBox1.ListIndex Select Case Listpos Case 0 sheetname = "1月" Case 1 sheetname = "2月" Case 2 sheetname = "3月" Case 3 sheetname = "4月" Case 4 sheetname = "5月" Case 5 sheetname = "6月" Case 6 sheetname = "7月" ・ ・ ・ End Select Worksheets(sheetname).Activate End Sub