显然打开一个工作簿不会自动使其成为活动的工作簿，至少在此事件处理程序启动时。尝试这样：

  Private Sub App_WorkbookOpen（ByVal Wb As Workbook）
如果不是Wb是没有，然后
如果InStr（Wb.Name，New Quote）然后
 quoteCheck = MsgBox（你想运行报价生成器？，vbYesNoQuote Generator）
如果quoteCheck = vbYes然后
准备
 Else 
结束
结束如果
结束如果
结束如果
结束Sub 
 / pre> 
I've created an Excel add-in that attempts to run upon the opening of any and all workbooks that are opened during this session.  It works sometimes - but not always, and I don't know why.

I created a file, addin.xlam, and in this file, in ThisWorkbook, I have:
Private XLApp As CExcelEvents

Private Sub Workbook_Open()
    Set XLApp = New CExcelEvents
End Sub
I then created a class module based off the code here:  http://www.cpearson.com/Excel/AppEvent.aspx
Private WithEvents App As Application

Private Sub Class_Initialize()
    Set App = Application
End Sub

Private Sub App_WorkbookOpen(ByVal Wb As Workbook)
    If Not ActiveWorkbook Is Nothing Then
        If InStr(ActiveWorkbook.Name, "New Quote") Then
            quoteCheck = MsgBox("Do you want to run the Quote Generator?", vbYesNo, "Quote Generator")
            If quoteCheck = vbYes Then
                prepare
            Else
                End
            End If
        End If
    End If
End Sub
If I close out of Excel and open a file from Windows Explorer, this line hits:
Private Sub App_WorkbookOpen(ByVal Wb As Workbook)
And starts the code - if the workbook in question has "new quote" in its name, the macro runs.  Boom.  Perfect.

However, after this runs ONCE, if I open another workbook with the words "new quote", this private sub doesn't trigger. Why?

How do I get this to trigger each time I open any workbook?
Apparently opening a workbook doesn't automatically make it the active workbook, at least in time for this event handler to fire. Try this:
Private Sub App_WorkbookOpen(ByVal Wb As Workbook)
    If Not Wb Is Nothing Then
    If InStr(Wb.Name, "New Quote") Then
        quoteCheck = MsgBox("Do you want to run the Quote Generator?", vbYesNo, "Quote Generator")
        If quoteCheck = vbYes Then
            prepare
        Else
            End
        End If
    End If
End If
End Sub