如何在允许数组输入的VBA UDF中复制Excel的TEXTJOIN函数

Question

如果我在不同的单元格中具有不同的值，如何将它们与带有自己选择的定界符的函数（例如“，”或“ |”等）连接在一起。

例如：

因此，如果您有：

A1: foo
A2: bar
A3: baz

您可以输入A4：

=somefunction("",A1:A3)

您将进入A4：

foo bar baz

此外，如果输入是数组函数的结果，例如：{foo，bar，bar}，该怎么办？

也许UDF可以工作？

我知道在Microsoft Office 2016中有textjoin函数，但是它仅适用于Office 365订阅者。并且此函数无法处理数组输入。

Answer 1

试试这个用户定义的功能。它非常通用。它需要输入硬编码的字符串，单个单元格，单元格范围，数组或它们的任何混合。空白将被忽略。有关输出，请参见照片。

Public Function TJoin(Sep As String, ParamArray TxtRng() As Variant) As String
On Error Resume Next
'Sep is the separator, set to "" if you don't want any separator. Separator must be string or single cell, not cell range
'TxtRng is the content you want to join. TxtRng can be string, single cell, cell range or array returned from an array function. Empty content will be ignored
Dim OutStr As String 'the output string
Dim i, j, k, l As Integer 'counters
Dim FinArr(), element As Variant 'the final array and a temporary element when transfering between the two arrays

'Go through each item of TxtRng(),  depending on the item type, transform and put it into FinArray()
i = 0 'the counter for TxtRng
j = 0 'the counter for FinArr
k = 0: l = 0 'the counters for the case of array from Excel array formula
Do While i < UBound(TxtRng) + 1
    If TypeName(TxtRng(i)) = "String" Then 'specified string like "t"
        ReDim Preserve FinArr(0 To j)
        FinArr(j) = "blah"
        FinArr(j) = TxtRng(i)
        j = j + 1
    ElseIf TypeName(TxtRng(i)) = "Range" Then 'single cell or range of cell like A1, A1:A2
        For Each element In TxtRng(i)
            ReDim Preserve FinArr(0 To j)
            FinArr(j) = element
            j = j + 1
        Next
    ElseIf TypeName(TxtRng(i)) = "Variant()" Then 'array returned from an Excel array formula
         For k = LBound(TxtRng(0), 1) To UBound(TxtRng(0), 1)
            For l = LBound(TxtRng(0), 2) To UBound(TxtRng(0), 2)
                ReDim Preserve FinArr(0 To j)
                FinArr(j) = TxtRng(0)(k, l)
                j = j + 1
            Next
         Next
    Else
        TJoin = CVErr(xlErrValue)
        Exit Function
    End If
i = i + 1
Loop

'Put each element of the new array into the join string
For i = LBound(FinArr) To UBound(FinArr)
    If FinArr(i) <> "" Then 'Remove this line if you want to include empty strings
    OutStr = OutStr & FinArr(i) & Sep
    End If
Next
 TJoin = Left(OutStr, Len(OutStr) - Len(Sep)) 'remove the ending separator

End Function

屏幕截图：

假设您的单元格如下所示：

  A                          B
1 find                       good
2 apples                     for free
3 online                     now
4 at                         from this site:
5 https://www.example.com

您可以输入一些公式，例如：

=tjoin(" ","please",$A$1,$A$3:$A$5)
=tjoin($A$6,$A$1:$A$5,"C1")
=tjoin(" ",IF(LEN($A$1:$A$5)>3,$A$1:$A$5,""))
=tjoin(" ",IF(LEN($A$1:$B$5)>3,$A$1:$B$5,""))

您的结果将是：

please find online at https://www.example.com
find -- apples -- online -- at -- https://www.example.com -- C1
find apples online at https://www.example.com
find good apples for free online from this site: https://www.example.com