Excel VBA将项目添加到组合框而不重复项目

我想将下面的项目添加到combobox，但如果有重复的项目，则只应添加一个

   A
1 john  
2 john
3 marry
4 marry
5 john
6 lisa
7 frank
8 marry

我希望组合框结果为

john

、

mary

、

lisa

和

frank

（四个唯一项，而不是八个项）

---

我的代码是：

Private Sub Workbook_Open()

    Application.EnableEvents = False

    With Sheet2.ComboBox1

        For Each Cell In Sheet1.Range("A1:A6348")
            If Not ComboBox1.exists(Cell.Value) Then
                .AddItem  Cell.Value
            End If
        Next

    End With

End Sub

---

添加唯一项的另一种方法是使用

字典

对象

见下文：

Dim rngItems As Range
Dim oDictionary As Object

Set rngItems = Range("A1:A8")
Set oDictionary = CreateObject("Scripting.Dictionary")

With Sheet1.ComboBox21
    For Each cel In rngItems
        If oDictionary.exists(cel.Value) Then
            'Do Nothing
        Else
            oDictionary.Add cel.Value, 0
            .AddItem cel.Value
        End If
    Next cel
End With

你看过这个方法了吗？

Dim rngItems As Range
Dim oDictionary As Object

Set rngItems = Range("A1:A8")
Set oDictionary = CreateObject("Scripting.Dictionary")

With Sheet1.ComboBox21
    For Each cel In rngItems
        If oDictionary.exists(cel.Value) Then
            'Do Nothing
        Else
            oDictionary.Add cel.Value, 0
            .AddItem cel.Value
        End If
    Next cel
End With