下面的代码在 InStr 调用中返回错误 5:
Option Explicit
Sub Test()
Dim wb As Workbook
Dim wbs As Workbooks
Dim str As String
Dim LPosition As Integer
Set wbs = Application.Workbooks
For Each wb In wbs
str = wb.Name
LPosition = InStr(0, str, "_", vbTextCompare)
MsgBox LPosition
Next wb
End Sub
有人可以解释为什么吗?