Vb.net 无法访问此文件的原因和解决方案是什么？

试图让一个基本的VB.NET Excel文件创建应用程序正常工作，从中的一些示例代码开始，我得到以下代码的错误msgs：

Private Sub ButtonCreateExcelFile_Click( sender As Object,  e As EventArgs) Handles ButtonCreateExcelFile.Click
    Dim xlApp As New Excel.Application
    Dim xlWorkBook As Excel.Workbook
    Dim xlWorkSheet As Excel.Worksheet
    Dim misValue As Object = System.Reflection.Missing.Value

    xlWorkBook = xlApp.Workbooks.Add(misValue)
    xlWorkBook.Application.Visible = True
    xlWorkBook.Application.ScreenUpdating = False
    xlWorkSheet = xlWorkBook.Sheets("sheet1")
    'xlWorkSheet.SaveAs("C:\vbexcel.xlsx")
    xlWorkSheet.SaveAs("C:\\misc\\vbexcel.xls")
    . . .

我首先试过这个：

xlWorkSheet.SaveAs("C:\vbexcel.xlsx")

（未能逃脱反攻），而这个（“vbexcel.xlsx”）不知何故被误认为是“52587100”，正如您在这里看到的：

System.Runtime.InteropServices.COMException was unhandled
  ErrorCode=-2146827284
  HelpLink=C:\Program Files (x86)\Microsoft Office\Office12\1033\XLMAIN11.CHM
  HResult=-2146827284
  Message=Microsoft Office Excel cannot access the file 'C:\52587100'. There are several possible reasons:

• The file name or path does not exist.
• The file is being used by another program.
• The workbook you are trying to save has the same name as a currently open workbook.
  Source=Microsoft Office Excel. . .

通过向路径添加子文件夹和转义字符，如下所示：

xlWorkSheet.SaveAs("C:\\misc\\vbexcel.xlsx")

…我得到了一个类似的错误，但这次它只是说它无法访问该文件（没有声明文件名为“52587100”）：

---

这段代码有什么问题，导致无法访问该文件？

一些可能的解决方案：C的根目录现在甚至连管理员（也称超级用户）都无法访问。您需要提升权限才能访问它。

System.Runtime.InteropServices.COMException was unhandled
  ErrorCode=-2146827284
  HelpLink=C:\Program Files (x86)\Microsoft Office\Office12\1033\XLMAIN11.CHM
  HResult=-2146827284
  Message=The file could not be accessed. Try one of the following: