主题：[求助]把现有的docx文件savetopdf要怎么写？

Dim app As New MSWord.Application
try
    Dim fileName = "g:\test.docx"
    Dim doc = app.Documents.Open(fileName)
    app.Documents(fileName).ExportAsFixedFormat("g:\test.pdf", MSWord.WdExportFormat.wdExportFormatPDF)
    app.Quit
catch ex As exception
    msgbox(ex.message)
    app.Quit
End try