C# 将word文档转换为pdf

    /// <summary>
    /// 将word转换为pdf
    /// </summary>
    public void DOCConvertPDF()
    {
        Microsoft.Office.Interop.Word.Application appClass = new Microsoft.Office.Interop.Word.Application();
        appClass.Visible = false;

        Object missing = System.Reflection.Missing.Value;
        Document wordDoc = new Document();
        object fileName = @"D:\\pdf\\wcf.docx";
        wordDoc = appClass.Documents.Open(ref fileName, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);


        object format = WdSaveFormat.wdFormatPDF;
        object savePath = @"D:\\pdf\\wcf.pdf";
        wordDoc.SaveAs(ref savePath, ref format, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);
        wordDoc.Close();
    }