Function theNumsAnalysis(TempString As String) As Variant    '数字分析
'作用:  分析 TempString 的内容,以方便处理有关系或连续的数字    (类似于Office打印中的页范围)
'参数:  TempString  以“,”、“-”分隔的字符串.如:"20405,7,1-3,20304-20306"分析结果为:20405,20407,20401,20402,20403,20304,20305,20306
'返回值:- Null 没有内容时,返回null
'       - 下标从0开始的1维数组
    Dim theTemp As Variant, theTemp1 As Variant, theTemp2 As Variant, varitm As Variant, i As Integer, j As Long, FirstLen As Byte
    Dim Temp1 As String, Temp2 As String, MinusLen As Byte
    If Isnull(TempString) Then  'Null值情况
        theNumsAnalysis = Null
        Exit Function
    End If
    theTemp = Split(TempString, ",")
    If InStr(theTemp(0), "-") > 0 Then  '如果包含"-"
        theTemp1 = Trim(Left(theTemp(0), InStr(theTemp(0), "-") - 1))   '取出"-"前面的内容
    Else
        theTemp1 = theTemp(0)
    End If
    FirstLen = Len(theTemp1)
    For Each varitm In theTemp
        If InStr(varitm, "-") > 0 Then
            MinusLen = InStr(varitm, "-")   '得到"-"位置
            Temp2 = Trim(Right(varitm, Len(varitm) - MinusLen))
            Temp1 = Right(Trim(Left(varitm, MinusLen - 1)), Len(Temp2))
            For j = Val(Temp1) To Val(Temp2)
                If i = 0 Then
                    theTemp2 = Left(theTemp1, FirstLen - Len(Temp2)) & j
                Else
                    theTemp2 = theTemp2 & "," & Left(theTemp1, Abs(FirstLen - Len(Temp2))) & j
                End If
                i = i + 1
            Next j
        Else
            If i = 0 Then
                theTemp2 = Left(theTemp1, Len(theTemp1) - Len(varitm)) & varitm
            Else
                theTemp2 = theTemp2 & "," & Left(theTemp1, Len(theTemp1) - Len(varitm)) & varitm
            End If
        End If
        i = i + 1
    Next varitm
    theNumsAnalysis = Split(theTemp2, ",")
End Function

调用试例：

Function a()
    Dim theTemp1 As Variant
    theTemp1 = theNumsAnalysis("20405,7,1-3,20304-20306")
    MsgBox Join(theTemp1, "、")
End Function