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以下代码能不能写简单一些?另,以下红色字体代表啥意思?
具体请见附件点击下载此附件
Private Sub Form_BeforeUpdate(Cancel As Integer)
On Err GoTo TryNextC
Dim MyForm As Form
Dim ctl As Control
Dim strUser As String
Set MyForm = Screen.ActiveForm
strUser = fOSUserName
' Set date and current user if form has been updated.
MyForm!DiaryMemo = MyForm!DiaryMemo & Chr(13) & Chr(10) & "Changes made on " & Now & " by " & strUser & ";"
'------------------------------
' If new record
If MyForm.NewRecord = True Then
For Each ctl In MyForm.Controls
Select Case ctl.ControlType
Case acTextBox, acComboBox, acListBox, acOptionGroup, acCheckBox
If ctl.Name = "DiaryMemo" Then GoTo TryNextB ' Skip ADD field
MyForm!DiaryMemo = MyForm!DiaryMemo & Chr(13) & Chr(10) & " 睰:" & ctl.Name & ": " & ctl.Value
End Select
TryNextB:
Next ctl
Exit Sub
End If
'--------------------------------------------
' Check each data entry control for change and record old value of Control.
For Each ctl In MyForm.Controls
Select Case ctl.ControlType
Case acTextBox, acComboBox, acListBox, acOptionGroup, acCheckBox
If ctl.Name = "DiaryMemo" Or ctl.Name = "ID" Then GoTo TryNextC ' Skip Updates field.
If ctl.Value <> ctl.OldValue Then
MyForm!DiaryMemo = MyForm!DiaryMemo & Chr(13) & Chr(10) & " э :" & ctl.Name & ": " & ctl.OldValue & " to: " & ctl.Value
End If
End Select
TryNextC:
Next ctl
End Sub