VB.NET - Emedding Powerpoint对象时出错

Question

请温柔，我是新手！

我正在尝试将Powerpoint查看器嵌入到VB.NET表单中。当我运行以下代码时，它会抛出异常：

Imports PowerPoint = Microsoft.Office.Interop.PowerPoint

Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs)
        Handles Button1.Click

        Const PPTFile = "C:\Report.pptx"
        Dim oPPTApp As PowerPoint.Application
        Dim oPPTPres As PowerPoint.Presentation
        oPPTApp = New PowerPoint.Application()
        oPPTPres = oPPTApp.Presentations.Open(PPTFile)
    End Sub
End Class

  

System.Runtime.InteropServices.COMException未处理
  ErrorCode = -2147221164 HResult = -2147221164 Message =正在检索   具有CLSID的组件的COM类工厂   {91493441-5A91-11CF-8700-00AA0060263B}由于以下原因而失败   错误：80040154未注册类（HRESULT异常：   0x80040154（REGDB_E_CLASSNOTREG））。源= mscorlib程序

代码是否有问题，或者是“未注册的课程”中的线索？如果是，我怎么知道哪个班？

由于