PPT转PDF方法

using Microsoft.Office.Interop.PowerPoint;

///<summary>        
        /// PPT转PDF       
        ///</summary>        
        ///<param name="sourcePath">源文件路径</param>     
        ///<param name="targetPath">目标文件路径</param> 
        ///<returns>成功返回true,失败返回false</returns> 
        public static bool PPTToPDF(string sourcePath, string targetPath)
        {
            bool result;
            PpSaveAsFileType ppSaveAsFileType = PpSaveAsFileType.ppSaveAsPDF;//转换成pdf
            object missing = Type.Missing;
            Microsoft.Office.Interop.PowerPoint.ApplicationClass application = null;
            Presentation persentation = null;
            try
            {
                application = new Microsoft.Office.Interop.PowerPoint.ApplicationClass();
                persentation = application.Presentations.Open(sourcePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse);
                if (persentation != null)
                {
                    persentation.SaveAs(targetPath, ppSaveAsFileType, MsoTriState.msoTrue);
                }
                result = true;
            }
            catch
            {
                result = false;
            }
            finally
            {
                if (persentation != null)
                {
                    persentation.Close();
                    persentation = null;
                }
                if (application != null)
                {
                    application.Quit();
                    application = null;
                }
            }
            return result;
        }