将 Excel Sheet 表中的最后 1 行数据添加到 Access 数据库表中

Question

我这里有一个简单的表单，它使用 VBA Excel 中的代码连接到导出到 SharePoint 列表的 MS Access 数据库。由于我刚刚学习 Excel to Access，因此我只是从互联网上复制了以下代码并将其粘贴到 Excel VBA 模块中。该模块由表单的命令按钮调用。 该模块的目的是将Excel Sheet表中的数据添加到Access Database表中。该代码达到了其目的。

我的问题是，每次我点击按钮时，代码都会将数据从第1行保存到最后一行。当我点击按钮时，它会滞后。如果您可以看到下图，则表明行已成功保存，但它堆积在数据库中，这反映在 SharePoint 中。它已经达到 110 个条目，而在表中只有 19 个条目。

表格

基于导出的 MS Access 数据库表的 SharePoint 列表

每次点击按钮时我的预期结果是，它应该只保存我所做的最后一个条目或最后一行数据，而不是整个工作表。

这是命令按钮代码：

Option Explicit
Private Sub CommandButton1_Click()
    Dim sh As Worksheet
    Set sh = ThisWorkbook.Sheets("Trial TRC")
    Dim n As Long
    n = sh.Range("A" & Application.Rows.Count).End(xlUp).Row
    sh.Range("A" & n + 1).Value = TextBox1.Value
    sh.Range("B" & n + 1).Value = TextBox2.Value
    sh.Range("C" & n + 1).Value = TextBox3.Value
    
    Call AddRecordsIntoAccessTable
End Sub

这是模块：

Option Explicit

Sub AddRecordsIntoAccessTable()
 'Declaring the necessary variables.
    Dim accessFile  As String
    Dim accessTable As String
    Dim sht         As Worksheet
    Dim lastRow     As Long
    Dim lastColumn  As Integer
    Dim con         As Object
    Dim rs          As Object
    Dim sql         As String
    Dim i           As Long
    Dim j           As Integer
            
    'Disable the screen flickering.
    Application.ScreenUpdating = False
    
    'Specify the file path of the accdb file. You can also use the full path of the file like this:
    'AccessFile = "C:\Users\Christos\Desktop\Sample.accdb"
    accessFile = ThisWorkbook.Path & "\" & "trialpower1.accdb"
         
    'Ensure that the Access file exists.
    If FileExists(accessFile) = False Then
        MsgBox "The Access file doesn't exist!", vbCritical, "Invalid Access file path"
        Exit Sub
    End If
    
    'Set the name of the table you want to add the data.
    accessTable = "Trial_TRC"
                
    'Set the worksheet that contains the data.
    On Error Resume Next
    Set sht = ThisWorkbook.Sheets("Trial TRC")
    If Err.Number <> 0 Then
        MsgBox "The given worksheet does not exist!", vbExclamation, "Invalid Sheet Name"
        Exit Sub
    End If
    Err.Clear
        
    'Find the last row and last column in the given worksheet.
    With sht
        lastRow = .Cells(.Rows.Count, "A").End(xlUp).Row
        lastColumn = .Cells(1, .Columns.Count).End(xlToLeft).Column
    End With
    
    'Check if there are data in the worksheet.
    If lastRow < 2 Or lastColumn < 1 Then
        MsgBox "There are no data in the given worksheet!", vbCritical, "Empty Data"
        Exit Sub
    End If
        
    'Create the ADODB connection object.
    Set con = CreateObject("ADODB.connection")
    
    'Check if the object was created.
    If Err.Number <> 0 Then
        MsgBox "The connection was not created!", vbCritical, "Connection Error"
        Exit Sub
    End If
    Err.Clear
    
    'Open the connection.
    con.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & accessFile
    
    'Create the SQL statement to retrieve the table data (the entire table).
    sql = "SELECT * FROM " & accessTable
    
    'Create the ADODB recordset object.
    Set rs = CreateObject("ADODB.Recordset")
    
    'Check if the object was created.
    If Err.Number <> 0 Then
        Set rs = Nothing
        Set con = Nothing
        MsgBox "The recordset was not created!", vbCritical, "Recordset Error"
        Exit Sub
    End If
    Err.Clear
             
    'Set the necessary recordset properties.
    rs.CursorType = 1   'adOpenKeyset on early binding
    rs.LockType = 3     'adLockOptimistic on early binding
        
    'Open the recordset.
    rs.Open sql, con
    
    'Add the records from Excel to Access by looping through the rows and columns of the given worksheet.
    'Here the headers are in the row 1 and they are identical to the Access table headers.
    'This is the reason why, for example, there are no spaces in the headers of the sample worksheet.
    For i = 2 To lastRow
        rs.AddNew
        For j = 1 To lastColumn
            'This is how it will look like the first time (i = 2, j = 1):
            'rs("FirstName") = "Bob"
            rs(sht.Cells(1, j).Value) = sht.Cells(i, j).Value
        Next j
        rs.Update
    Next i
        
    'Close the recordet and the connection.
    rs.Close
    con.Close
    
    'Release the objects.
    Set rs = Nothing
    Set con = Nothing
    
    'Re-enable the screen.
    Application.ScreenUpdating = True

    'Inform the user that the macro was executed successfully.
    MsgBox lastRow - 1 & " rows were successfully added into the '" & accessTable & "' table!", vbInformation, "Done"
    
End Sub

Function FileExists(FilePath As String) As Boolean
 
    '--------------------------------------------------
    'Checks if a file exists (using the Dir function).
    '--------------------------------------------------
 
    On Error Resume Next
    If Len(FilePath) > 0 Then
        If Not Dir(FilePath, vbDirectory) = vbNullString Then FileExists = True
    End If
    On Error GoTo 0
 
End Function

请指教。谢谢你。

Answer 1

我更改了您可以看到的代码：

For i = 2 to lastRow
down to 
Next i

这段代码：

 i = sht.Range("A" & Application.Rows.Count).End(xlUp).Row
    'x = 0
    Do While Len(Range("A" & i).Formula) > 0
' repeat until first empty cell in column A
        With rs
            .AddNew ' create a new record
            .Fields("Year") = Range("A" & i).Value
            .Fields("MSID") = Range("B" & i).Value
            .Fields("Date") = Range("C" & i).Value
            .Update
          'stores the new record
    End With
    i = i + 1
    Loop

并且成功将Excel表中的1行数据添加到Access表中。