vb.net - 打开Excel文件并检查它是否是只读的

Question

在尝试写入之前，我需要检查 Excel 文件是否为只读。这是我的代码:

  Private Sub ButtonTest_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonTest.Click
    Dim UnapprovedAcctFile As String = "W:\TOM\ERIC\Award_Letters\Accounting Files\Unapproved\" & StatVar.xlApp.Sheets("New Calculator Input").Range("D30").Value & ".xlsx"
    Dim UnapprovedFileName = StatVar.xlApp.Sheets("New Calculator Input").Range("D30").Value & ".xlsx" 
    If Not IO.File.Exists(UnapprovedAcctFile) Then
        MessageBox.Show("Could not locate the accounting file for this school. Please contact an administrator for assistance.")
        Exit Sub
    Else
        StatVar.xlWBUnapprovedAcctFile = StatVar.xlApp.Workbooks.Open(UnapprovedAcctFile)
        If GetAttr(UnapprovedFileName) And vbReadOnly Then
            MessageBox.Show("File is read only.")
        End If
    End If
   End Sub

它在这里抛出异常:

If GetAttr(UnapprovedFileName) And vbReadOnly Then   

异常(exception)是“找不到文件“East.xlsx”。但是，该文件打开，因此它确实存在。我以为我需要在没有路径的情况下引用文件，但显然我在这里有点偏离。有什么建议吗？

Answer 1

解决方案:

If StatVar.xlApp.ActiveWorkbook.ReadOnly = True Then