Excel VBA宏以获取分号之前的文本的子字符串

Question

我这里有工作代码。

在第（3）节中，它从特定标头下的单元格中获取值，并将其打印到主文件中。这些值通常看起来像

TL-18273982; 10毫米

TL-288762; 76DK

CT-576

不适用

我只想获取第一个分号之前的信息。并非所有单元格中都带有半冒号，因此可能需要沿着if的if语句。然后在其前面打印所有内容。

我一直在尝试使用拆分功能来执行此操作，但是我对VBA的经验不是很丰富，因此遇到了一些麻烦。有什么建议么？

Option Explicit

Sub LoopThroughDirectory()

    Const ROW_HEADER As Long = 10

    Dim objFSO As Object
    Dim objFolder As Object
    Dim objFile As Object
    Dim MyFolder As String
    Dim StartSht As Worksheet, ws As Worksheet
    Dim WB As Workbook
    Dim i As Integer
    Dim LastRow As Integer, erow As Integer
    Dim Height As Integer
    Dim RowLast As Long
    Dim f As String
    Dim dict As Object
    Dim hc As Range, hc1 As Range, hc2 As Range, hc3 As Range, d As Range

    Set StartSht = Workbooks("masterfile.xlsm").Sheets("Sheet1")

    'turn screen updating off - makes program faster
    Application.ScreenUpdating = False

    'location of the folder in which the desired TDS files are
    MyFolder = "C:\Users\trembos\Documents\TDS\progress\"

    'find the headers on the sheet
    Set hc1 = HeaderCell(StartSht.Range("B1"), "HOLDER")
    Set hc2 = HeaderCell(StartSht.Range("C1"), "CUTTING TOOL")

    'create an instance of the FileSystemObject
    Set objFSO = CreateObject("Scripting.FileSystemObject")
    'get the folder object
    Set objFolder = objFSO.GetFolder(MyFolder)
    i = 2


    'loop through directory file and print names
'(1)
    For Each objFile In objFolder.Files
        If LCase(Right(objFile.Name, 3)) = "xls" Or LCase(Left(Right(objFile.Name, 4), 3)) = "xls" Then
'(2)

            'Open folder and file name, do not update links
            Set WB = Workbooks.Open(fileName:=MyFolder & objFile.Name, UpdateLinks:=0)
            Set ws = WB.ActiveSheet
'(3)
                'find CUTTING TOOL on the source sheet
                Set hc = HeaderCell(ws.Cells(ROW_HEADER, 1), "CUTTING TOOL")
                If Not hc Is Nothing Then

                    Set dict = GetValues(hc.Offset(1, 0))
                    If dict.count > 0 Then
                        Set d = StartSht.Cells(Rows.count, hc2.Column).End(xlUp).Offset(1, 0)
                        'add the values to the masterfile, column 3
                        d.Resize(dict.count, 1).Value = Application.Transpose(dict.items)
                    End If
                Else
                    'header not found on source worksheet
                End If
'(4)
                'find HOLDER on the source sheet
                Set hc3 = HeaderCell(ws.Cells(ROW_HEADER, 1), "HOLDER")
                If Not hc3 Is Nothing Then

                    Set dict = GetValues(hc3.Offset(1, 0))
                    If dict.count > 0 Then
                        Set d = StartSht.Cells(Rows.count, hc1.Column).End(xlUp).Offset(1, 0)
                        'add the values to the master list, column 2
                        d.Resize(dict.count, 1).Value = Application.Transpose(dict.items)
                    End If
                Else
                    'header not found on source worksheet
                End If
'(5)
            With WB
               'print TDS information
                For Each ws In .Worksheets
                        'print the file name to Column 1
                        StartSht.Cells(i, 1) = objFile.Name
                        'print TDS name from J1 cell to Column 4
                        With ws
                            .Range("J1").Copy StartSht.Cells(i, 4)
                        End With
                        i = GetLastRowInSheet(StartSht) + 1
                'move to next file
                Next ws
'(6)
                'close, do not save any changes to the opened files
                .Close SaveChanges:=False
            End With
        End If
    'move to next file
    Next objFile
    'turn screen updating back on
    Application.ScreenUpdating = True
    ActiveWindow.ScrollRow = 1
'(7)
End Sub

'(8)
'get all unique column values starting at cell c
Function GetValues(ch As Range) As Object
    Dim dict As Object, rng As Range, c As Range, v
    Set dict = CreateObject("scripting.dictionary")
    For Each c In ch.Parent.Range(ch, ch.Parent.Cells(Rows.count, ch.Column).End(xlUp)).Cells
        v = Trim(c.Value)
        If Len(v) > 0 And Not dict.exists(v) Then
            dict.Add c.Address, v
        End If
    Next c
    Set GetValues = dict
End Function

'(9)
'find a header on a row: returns Nothing if not found
Function HeaderCell(rng As Range, sHeader As String) As Range
    Dim rv As Range, c As Range
    For Each c In rng.Parent.Range(rng, rng.Parent.Cells(rng.Row, Columns.count).End(xlToLeft)).Cells
        If Trim(c.Value) = sHeader Then
            Set rv = c
            Exit For
        End If
    Next c
    Set HeaderCell = rv
End Function

'(10)
Function GetLastRowInColumn(theWorksheet As Worksheet, col As String)
    With theWorksheet
        GetLastRowInColumn = .Range(col & .Rows.count).End(xlUp).Row
    End With
End Function

'(11)
Function GetLastRowInSheet(theWorksheet As Worksheet)
Dim ret
    With theWorksheet
        If Application.WorksheetFunction.CountA(.Cells) <> 0 Then
            ret = .Cells.Find(What:="*", _
                          After:=.Range("A1"), _
                          Lookat:=xlPart, _
                          LookIn:=xlFormulas, _
                          SearchOrder:=xlByRows, _
                          SearchDirection:=xlPrevious, _
                          MatchCase:=False).Row
        Else
            ret = 1
        End If
    End With
    GetLastRowInSheet = ret
End Function

Answer 1

如果您使用一种Split功能，就会喜欢它-> https://msdn.microsoft.com/zh-cn/library/6x627e5f%28v=vs.90%29.aspx

查找以下示例：

Sub TestSplit()

Dim String1 As String
Dim Arr1 As Variant

String1 = "TL-18273982; 10MM"
Arr1 = Split(String1, ";")

Debug.Print "TEST1: String1=" & String1
Debug.Print "TEST1: Arr1(0)=" & Arr1(0)
Debug.Print "TEST1: Arr1(1)=" & Arr1(1)

String1 = "CT-576"
Arr1 = Split(String1, ";")
Debug.Print "TEST2: String1=" & String1
Debug.Print "TEST2: Arr1(0)=" & Arr1(0)

String1 = "N/A"
Arr1 = Split(String1, ";")
Debug.Print "TEST3: String1=" & String1
Debug.Print "TEST3: Arr1(0)=" & Arr1(0)

End Sub

结果：

TEST1: String1=TL-18273982; 10MM
TEST1: Arr1(0)=TL-18273982
TEST1: Arr1(1)= 10MM
TEST2: String1=CT-576
TEST2: Arr1(0)=CT-576
TEST3: String1=N/A
TEST3: Arr1(0)=N/A

编辑：也许简单的修改GetValues就能解决问题？

将函数调用更改为：

Set dict = GetValues(hc.Offset(1, 0), "SplitMe")

并更改函数，如下所示：

'(8)
'get all unique column values starting at cell c
Function GetValues(ch As Range, Optional vSplit As Variant) As Object
    Dim dict As Object, rng As Range, c As Range, v
    Dim spl As Variant
    Set dict = CreateObject("scripting.dictionary")
    For Each c In ch.Parent.Range(ch, ch.Parent.Cells(Rows.Count, ch.Column).End(xlUp)).Cells
        v = Trim(c.Value)
        If Len(v) > 0 And Not dict.exists(v) Then

            If Not IsMissing(vSplit) Then
            spl = Split(v, ";")
            v = spl(0)
            End If

            dict.Add c.Address, v
        End If
    Next c
    Set GetValues = dict
End Function