根据可变用户定义的路径复制封闭工作簿的数据

Question

我已经用尽了搜索功能，以寻求解决方案。这是我想做的事情的大纲：

• 用户打开启用宏观的Excel文件
  
• 立即显示用户输入或选择所需工作簿的文件路径。他们需要选择两个文件，并且文件名可能不一致
• 输入文件位置后，第一个文件选择中的第一个工作表将被复制到启用宏观启用工作簿的第一个工作表，第二个文件选择的第一个工作表将被复制到宏观启用宏观工作簿的第二个工作表中。

我遇到了一些对ADO的参考，但我真的还不熟悉这一点。

编辑：我找到了一个代码来从封闭文件导入数据。我需要调整范围以返回可变结果。

    Private Function GetValue(path, file, sheet, ref)

    path = "C:\Users\crathbun\Desktop"
    file = "test.xlsx"
    sheet = "Sheet1"
    ref = "A1:R30"

     '   Retrieves a value from a closed workbook
    Dim arg As String

     '   Make sure the file exists
    If Right(path, 1) <> "\" Then path = path & "\"
    If Dir(path & file) = "" Then
        GetValue = "File Not Found"
        Exit Function
    End If

     '   Create the argument
    arg = "'" & path & "[" & file & "]" & sheet & "'!" & _
    Range(ref).Range("A1").Address(, , xlR1C1)

     '   Execute an XLM macro
    GetValue = ExecuteExcel4Macro(arg)
End Function

Sub TestGetValue()

    path = "C:\Users\crathbun\Desktop"
    file = "test"
    sheet = "Sheet1"

    Application.ScreenUpdating = False
    For r = 1 To 30
        For C = 1 To 18
            a = Cells(r, C).Address
            Cells(r, C) = GetValue(path, file, sheet, a)
        Next C
    Next r

    Application.ScreenUpdating = True
End Sub

现在，我需要一个命令按钮或用户形式，它将立即提示用户定义文件路径，并从该文件导入数据。

Answer 1

我不介意在过程中是否打开文件。我只是不希望用户单独打开文件。我只需要它们能够选择或导航到所需的文件

这是一个基本代码。该代码要求用户选择两个文件，然后将相关表将相关表导入到当前工作簿中。我给出了两个选择。选择:)

尝试和测试

选项1（直接导入表而不是复制到Sheet1和2中）

Option Explicit

Sub Sample()
    Dim wb1 As Workbook, wb2 As Workbook
    Dim Ret1, Ret2

    Set wb1 = ActiveWorkbook

    '~~> Get the first File
    Ret1 = Application.GetOpenFilename("Excel Files (*.xls*), *.xls*", _
    , "Please select first file")
    If Ret1 = False Then Exit Sub

    '~~> Get the 2nd File
    Ret2 = Application.GetOpenFilename("Excel Files (*.xls*), *.xls*", _
    , "Please select Second file")
    If Ret2 = False Then Exit Sub

    Set wb2 = Workbooks.Open(Ret1)
    wb2.Sheets(1).Copy Before:=wb1.Sheets(1)
    ActiveSheet.Name = "Blah Blah 1"
    wb2.Close SaveChanges:=False

    Set wb2 = Workbooks.Open(Ret2)
    wb2.Sheets(1).Copy After:=wb1.Sheets(1)
    ActiveSheet.Name = "Blah Blah 2"
    wb2.Close SaveChanges:=False

    Set wb2 = Nothing
    Set wb1 = Nothing
End Sub

选项2（将纸的内容导入Sheet1和2）

Option Explicit

Sub Sample()
    Dim wb1 As Workbook, wb2 As Workbook
    Dim Ret1, Ret2

    Set wb1 = ActiveWorkbook

    '~~> Get the first File
    Ret1 = Application.GetOpenFilename("Excel Files (*.xls*), *.xls*", _
    , "Please select first file")
    If Ret1 = False Then Exit Sub

    '~~> Get the 2nd File
    Ret2 = Application.GetOpenFilename("Excel Files (*.xls*), *.xls*", _
    , "Please select Second file")
    If Ret2 = False Then Exit Sub

    Set wb2 = Workbooks.Open(Ret1)
    wb2.Sheets(1).Cells.Copy wb1.Sheets(1).Cells
    wb2.Close SaveChanges:=False

    Set wb2 = Workbooks.Open(Ret2)
    wb2.Sheets(1).Cells.Copy wb1.Sheets(2).Cells
    wb2.Close SaveChanges:=False

    Set wb2 = Nothing
    Set wb1 = Nothing
End Sub

Answer 2

下面的功能读取来自封闭的Excel文件的数据，并将结果返回数组中。它会丢失格式，公式等。您可能需要在主代码中调用isarrayEmpty函数（在底部）以测试该函数是否返回某些内容。

Public Function getDataFromClosedExcelFile(parExcelFileName As String, parSheetName As String) As Variant
'see http://www.ozgrid.com/forum/showthread.php?t=19559
'returns an array (1 to nRows, 1 to nCols) which should be tested with isArrayEmpty in the calling function

  Dim locConnection As New ADODB.Connection
  Dim locRst As New ADODB.Recordset
  Dim locConnectionString As String
  Dim locQuery As String
  Dim locCols As Variant
  Dim locResult As Variant
  Dim i As Long
  Dim j As Long

  On Error GoTo error_handler

  locConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" _
  & "Data Source=" & parExcelFileName & ";" _
  & "Extended Properties=""Excel 8.0;HDR=YES"";"

  locQuery = "SELECT * FROM [" & parSheetName & "$]"

  locConnection.Open ConnectionString:=locConnectionString
  locRst.Open Source:=locQuery, ActiveConnection:=locConnection
  If locRst.EOF Then 'Empty sheet or only one row
    '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
    ''''''         FIX: an empty sheet returns "F1"
    ''''''         http://support.microsoft.com/kb/318373
    '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
    If locRst.Fields.Count = 1 And locRst.Fields(0).Name = "F1" Then Exit Function 'Empty sheet
    ReDim locResult(1 To 1, 1 To locRst.Fields.Count) As Variant
    For i = 1 To locRst.Fields.Count
      locResult(1, i) = locRst.Fields(i - 1).Name
    Next i
  Else
    locCols = locRst.GetRows
    '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
    ''''''         FIX: an empty sheet returns "F1"
    ''''''         http://support.microsoft.com/kb/318373
    '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
    If locRst.Fields.Count = 1 And locRst.Fields(0).Name = "F1" And UBound(locCols, 2) = 0 And locCols(0, 0) = "" Then Exit Function 'Empty sheet

    ReDim locResult(1 To UBound(locCols, 2) + 2, 1 To UBound(locCols, 1) + 1) As Variant

    If locRst.Fields.Count <> UBound(locCols, 1) + 1 Then Exit Function 'Not supposed to happen

    For j = 1 To UBound(locResult, 2)
      locResult(1, j) = locRst.Fields(j - 1).Name
    Next j
    For i = 2 To UBound(locResult, 1)
      For j = 1 To UBound(locResult, 2)
        locResult(i, j) = locCols(j - 1, i - 2)
      Next j
    Next i
  End If

  locRst.Close
  locConnection.Close
  Set locRst = Nothing
  Set locConnection = Nothing

  getDataFromClosedExcelFile = locResult

  Exit Function
error_handler:
  'Wrong file name, sheet name, or other errors...
  'Errors (#N/A, etc) on the sheet should be replaced by Null but should not raise an error
  If locRst.State = ADODB.adStateOpen Then locRst.Close
  If locConnection.State = ADODB.adStateOpen Then locConnection.Close
  Set locRst = Nothing
  Set locConnection = Nothing

End Function

Public Function isArrayEmpty(parArray As Variant) As Boolean
'Returns false if not an array or dynamic array that has not been initialised (ReDim) or has been erased (Erase)

  If IsArray(parArray) = False Then isArrayEmpty = True
  On Error Resume Next
  If UBound(parArray) < LBound(parArray) Then isArrayEmpty = True: Exit Function Else: isArrayEmpty = False

End Function

样品使用：

Sub test()

  Dim data As Variant

  data = getDataFromClosedExcelFile("myFile.xls", "Sheet1")
  If Not isArrayEmpty(data) Then
    'Copies content on active sheet
    ActiveSheet.Cells(1,1).Resize(UBound(data,1), UBound(data,2)) = data
  End If

End Sub