Question

我有两个Excel文件需要根据主键合并到一个Excel文件中。我需要在vb.net中执行此操作，并且不知道从哪里开始。一个文件是数据列表，另一个是矩阵。我需要将矩阵字段添加到数据列表中，并且根据主键，数据列表中的数据行将由相应的矩阵行填充。我有以下但我不确定我是否朝着正确的方向前进。如果是，那么如何将其另存为新的Excel文件？

Dim DT1 As DataTable
DT1.Rows.Add(DtSet)

Dim DT2 As DataTable
DT2.Rows.Add(DtSet2)

DT1.PrimaryKey = New DataColumn() {DT1.Columns(ComboBox1.SelectedItem)}
DT2.PrimaryKey = New DataColumn() {DT1.Columns(ComboBox2.SelectedItem)}

DT1.Merge(DT2)

Answer 1

如果我是你，我会使用Excel合并功能。

https://www.ablebits.com/office-addins-blog/2015/09/01/consolidate-excel-merge-sheets/#consolidate-data-excel

如果您真的必须使用VB，可以尝试下面的脚本。

Sub Merge2Workbooks()
    Dim SummarySheet As Worksheet
    Dim FolderPath As String
    Dim NRow As Long
    Dim FileName As String
    Dim WorkBk As Workbook
    Dim SourceRange As Range
    Dim DestRange As Range

    ' Create a new workbook and set a variable to the first sheet. 
    Set SummarySheet = Workbooks.Add(xlWBATWorksheet).Worksheets(1)

    ' Modify this folder path to point to the files you want to use.
    FolderPath = "C:\Users\Peter\invoices\"

    ' NRow keeps track of where to insert new rows in the destination workbook.
    NRow = 1

    ' Call Dir the first time, pointing it to all Excel files in the folder path.
    FileName = Dir(FolderPath & "*.xl*")

    ' Loop until Dir returns an empty string.
    Do While FileName <> ""
        ' Open a workbook in the folder
        Set WorkBk = Workbooks.Open(FolderPath & FileName)

        ' Set the cell in column A to be the file name.
        SummarySheet.Range("A" & NRow).Value = FileName

        ' Set the source range to be A9 through C9.
        ' Modify this range for your workbooks. 
        ' It can span multiple rows.
        Set SourceRange = WorkBk.Worksheets(1).Range("A9:C9")

        ' Set the destination range to start at column B and 
        ' be the same size as the source range.
        Set DestRange = SummarySheet.Range("B" & NRow)
        Set DestRange = DestRange.Resize(SourceRange.Rows.Count, _
           SourceRange.Columns.Count)

        ' Copy over the values from the source to the destination.
        DestRange.Value = SourceRange.Value

        ' Increase NRow so that we know where to copy data next.
        NRow = NRow + DestRange.Rows.Count

        ' Close the source workbook without saving changes.
        WorkBk.Close savechanges:=False

        ' Use Dir to get the next file name.
        FileName = Dir()
    Loop

    ' Call AutoFit on the destination sheet so that all 
    ' data is readable.
    SummarySheet.Columns.AutoFit
End Sub

你也可能觉得这很有趣。

https://siddharthrout.wordpress.com/2012/06/05/vb-netvba-copy-rows-from-multiple-tabs-into-one-sheet-in-excel/

在vb.net中将两个excel文件与主键合并

1 个答案: