ms-access - 单击保存按钮而不是覆盖 MS-Access 时创建新记录

Question

我有一个带有组合框和绑定到表格的文本框的表单，还有一个显示内容的表格和一个保存记录的按钮。

我想知道如何在单击保存按钮时让表单创建新记录而不是覆盖当前记录？

我目前正在使用具有 RunCommand SaveRecord 和 Refresh 的宏来更新表。

我需要使用 vba 代码来实现我想要的吗？

Answer 1

我认为最简单的答案是在 VBA 中构建一个快速宏 - 向表中添加新记录的代码非常简单：

Private Sub cmdAddRecord_Click()
  Dim db As Database
  Dim rs As DAO.Recordset

  Set dbVideoCollection = CurrentDb
  Set rs = db.OpenRecordset("TableName") //<- Or a specific query in the parentheses.

  rs.AddNew
  rs("Column1").Value = "Blah"
  rs("Column2").Value = "Blah"
  rs("Column3").Value = "Blah"
  rs("Column4").Value = "Blah"
  rs("Column5").Value = "Blah"
  rs.Update
End Sub

您可以通过添加变量并读取数据从表单上的文本框（或您正在使用的任何输入）中提取数据，例如：

strPnum = Me.txtPNum.Value

这是我用于类似程序的代码 - 它更复杂，但它根据数据库中的条件添加行并在表单上输入。

Private Sub Add()
''Add the Item to the Database

Dim Checker As Integer      ''Used to check if all of the essential information is present on the form
Dim strPNum As String       ''Hold's the Parent Item Value
Dim strSIM As String        ''Hold's the SIM number Value
Dim rs As DAO.Recordset     ''Used for the Routing table record set
Dim lrs As DAO.Recordset    ''Used for the Labor Code table record set
Dim db As Database          ''Database variable
Dim i As Integer
Dim OpDesc, LabCode, DBLRCodes(50), DBLRClong, DBLRDesc(50), a As String
Dim RoutSeq, LabHour, LabUnits, LRChecker, b, c As Integer

Set db = CurrentDb
Set rs = db.OpenRecordset("tblTestForRoutingInput")
Set lrs = db.OpenRecordset("tblLaborRateCodes")
Checker = 0
i = 1

''Debug.Print "For Cycling through manually."

''Verify that the essential fields have values.
If IsNull(Me.txtPNum.Value) Then
    Checker = MsgBox("Please enter a value for the Parent Item Number", vbOKOnly, "Blank Parent Item Number")
ElseIf IsNull(Me.txtSIM.Value) Then
    Checker = MsgBox("Please enter a value for the SIM number", vbOKOnly, "Blank SIM Number")
ElseIf Len(Me.txtSIM.Value) <> 11 Then
    Checker = MsgBox("The SIM # must be 11 characters.", vbOKOnly, "Invalid SIM Number")
ElseIf IsNull(Me.txtStep1.Value) Then
    Checker = MsgBox("Please enter at least ( 1 ) routing step.", vbOKOnly, "No Routing Steps")
End If



''If none of the essential fields are empty, proceed with the add.
If Checker = 0 Then

    ''Pull the Parent Item and SIM number values
    strPNum = Me.txtPNum.Value
    strSIM = Me.txtSIM.Value

    ''Search the table to see if the PNum or SIM already exists. If it does, end the function.
    Do While Not rs.EOF
        If rs("Parent_Item") = strPNum And Checker = 0 Then
            Checker = MsgBox("Parent Item#: " + strPNum + " already exists in the database. If you wish to edit the item, please use the [Edit] screen.", vbOKOnly, "Item Already Exists")
            i = 20
        ElseIf rs("SIM") = strSIM And Checker = 0 Then
            Checker = MsgBox("SIM#: " + strSIM + " already exists in the database. If you wish to edit the item, please use the [Edit] screen.", vbOKOnly, "Item Already Exists")
            i = 20
        End If
        rs.MoveNext
    Loop

    ''Determine the step to read in.
    Do Until i = 20
        If i = 1 Then
            OpDesc = Me.txtStep1.Value
            RoutSeq = Me.txtSeq1.Value
            LabCode = Me.txtCode1.Value
            LabHour = Me.txtHours1.Value
            LabUnits = Me.txtUnits1.Value
        ElseIf i = 2 Then ''I have a long string of If statement in the original code that are just used to get the data from the different text boxes but would take up another few hundred lines here.
        End If


        ''If the current step has no data, end the function
        If IsNull(OpDesc) Then
            Checker = MsgBox("Item: " + strPNum + " has been added with (" + Str(i - 1) + ") Routing Steps", vbOKOnly, "Item Added")
            i = 20
        Else
            ''Define the variables to use for the Labor Rate Checker
            LRChecker = 0
            DBLClong = ""
            b = 0
            c = 1
            ''Check the entered Labor Rate Code against what is in the database, and pull the data into parallel arrays
            Do While Not lrs.EOF
                b = b + 1
                If LabCode = lrs("Labor_Rate_Code") Then
                    LRChecker = 1
                End If
                DBLRCodes(b) = lrs("Labor_Rate_Code")
                DBLRDesc(b) = lrs("Labor_Rate_Description")
                lrs.MoveNext
            Loop ''While Loop

            ''Compile the LR array data into 1 string for the Message Box
            Do Until c > b
                If DBLClong = "" Then
                    DBLClong = DBLRCodes(c) + " - " + DBLRDesc(c)
                Else
                    DBLClong = DBLClong & vbNewLine & DBLRCodes(c) + " - " + DBLRDesc(c)
                End If
                c = c + 1
            Loop ''Until Loop

            lrs.MoveFirst

            ''If the Labor Rate code entered does not match one in the system, prompt the user to input a new code.
            If LRChecker = 0 Then
                LabCode = InputBox("The Labor Rate Code entered for Routing Step: " + Str(i) + " does not match any in the database. Please enter one of the following codes: " & vbNewLine & vbNewLine & DBLClong + ".", "Invalid Labor Rate Code", "Enter Code Here")
            End If

            ''Add the new record into the DB
            rs.AddNew
            rs("Parent_Item") = strPNum
            rs("Operation_Description") = OpDesc
            rs("Routing_Sequence") = RoutSeq
            rs("Labor_Code") = LabCode
            rs("Labor_Hours") = LabHour
            rs("Labor_Units") = LabUnits
            rs("Quantity") = 10000
            rs("SIM") = strSIM
            rs("Effective_Date") = Date
            rs.Update
            i = i + 1
        End If


    Loop
    ''Close the recordsets
    rs.Close
    lrs.Close

End If
End Sub