C#实现MS-Office文档转Pdf（Word、Execel、PowerPoint、Visio、Project）

直接奉上源代码，运行环境：Office2010，Project2010（如果需要），Visio2010（如果需要），.net framework2.0

using System;
using Microsoft.Office.Core;

namespace Office
{
    class Util
    {
        private Util() { }
        /// <summary>
        /// 把Word文件转换成为PDF格式文件
        /// </summary>
        /// <param name="sourcePath">源文件路径</param>
        /// <param name="targetPath">目标文件路径</param> 
        /// <returns>true=转换成功</returns>
        public static bool WordToPDF(string sourcePath, string targetPath)
        {
            bool result = false;
            Microsoft.Office.Interop.Word.WdExportFormat exportFormat = Microsoft.Office.Interop.Word.WdExportFormat.wdExportFormatPDF;
            Microsoft.Office.Interop.Word.ApplicationClass application = null;

            Microsoft.Office.Interop.Word.Document document = null;
            try
            {
                application = new Microsoft.Office.Interop.Word.ApplicationClass();
                application.Visible = false;
                document = application.Documents.Open(sourcePath);
                document.SaveAs2();
                document.ExportAsFixedFormat(targetPath, exportFormat);
                result = true;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                result = false;
            }
            finally
            {
                if (document != null)
                {
                    document.Close();
                    document = null;
                }
                if (application != null)
                {
                    application.Quit();
                    application = null;
                }
                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();
                GC.WaitForPendingFinalizers();
            }
            return result;
        }

        /// <summary>
        /// 把Microsoft.Office.Interop.Excel文件转换成PDF格式文件
        /// </summary>
        /// <param name="sourcePath">源文件路径</param>
        /// <param name="targetPath">目标文件路径</param> 
        /// <returns>true=转换成功</returns>
        public static bool ExcelToPDF(string sourcePath, string targetPath)
        {
            bool result = false;
            Microsoft.Office.Interop.Excel.XlFixedFormatType targetType = Microsoft.Office.Interop.Excel.XlFixedFormatType.xlTypePDF;
            object missing = Type.Missing;
            Microsoft.Office.Interop.Excel.ApplicationClass application = null;
            Microsoft.Office.Interop.Excel.Workbook workBook = null;
            try
            {
                application = new Microsoft.Office.Interop.Excel.ApplicationClass();
                application.Visible = false;
                workBook = application.Workbooks.Open(sourcePath);
                workBook.SaveAs();
                workBook.ExportAsFixedFormat(targetType, targetPath);
                result = true;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                result = false;
            }
            finally
            {
                if (workBook != null)
                {
                    workBook.Close(true, missing, missing);
                    workBook = null;
                }
                if (application != null)
                {
                    application.Quit();
                    application = null;
                }
                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();
                GC.WaitForPendingFinalizers();
            }
            return result;
        }
        /// <summary>
        /// 把PowerPoint文件转换成PDF格式文件
        /// </summary>
        /// <param name="sourcePath">源文件路径</param>
        /// <param name="targetPath">目标文件路径</param> 
        /// <returns>true=转换成功</returns>
        public static bool PowerPointToPDF(string sourcePath, string targetPath)
        {
            bool result;
            Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType targetFileType = Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType.ppSaveAsPDF;
            object missing = Type.Missing;
            Microsoft.Office.Interop.PowerPoint.ApplicationClass application = null;
            Microsoft.Office.Interop.PowerPoint.Presentation persentation = null;
            try
            {
                application = new Microsoft.Office.Interop.PowerPoint.ApplicationClass();
                //application.Visible = MsoTriState.msoFalse;
                persentation = application.Presentations.Open(sourcePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse);
                persentation.SaveAs(targetPath, targetFileType, Microsoft.Office.Core.MsoTriState.msoTrue);

                result = true;
            }
            catch(Exception e)
            {
                Console.WriteLine(e.Message);
                result = false;
            }
            finally
            {
                if (persentation != null)
                {
                    persentation.Close();
                    persentation = null;
                }
                if (application != null)
                {
                    application.Quit();
                    application = null;
                }
                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();
                GC.WaitForPendingFinalizers();
            }
            return result;
        }

        /// <summary>
        /// 把Visio文件转换成PDF格式文件
        /// </summary>
        /// <param name="sourcePath">源文件路径</param>
        /// <param name="targetPath">目标文件路径</param> 
        /// <returns>true=转换成功</returns>
        public static bool VisioToPDF(string sourcePath, string targetPath)
        {
            bool result;
            Microsoft.Office.Interop.Visio.VisFixedFormatTypes targetType = Microsoft.Office.Interop.Visio.VisFixedFormatTypes.visFixedFormatPDF;
            object missing = Type.Missing;
            Microsoft.Office.Interop.Visio.ApplicationClass application = null;
            Microsoft.Office.Interop.Visio.Document document = null;
            try
            {
                application = new Microsoft.Office.Interop.Visio.ApplicationClass();
                application.Visible = false;
                document = application.Documents.Open(sourcePath);
                document.Save();
                document.ExportAsFixedFormat(targetType, targetPath, Microsoft.Office.Interop.Visio.VisDocExIntent.visDocExIntentScreen, Microsoft.Office.Interop.Visio.VisPrintOutRange.visPrintAll);
                result = true;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                result = false;
            }
            finally
            {
                if (application != null)
                {
                    application.Quit();
                    application = null;
                }
                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();
                GC.WaitForPendingFinalizers();
            }
            return result;
        }

        /// <summary>
        /// 把Project文件转换成PDF格式文件
        /// </summary>
        /// <param name="sourcePath">源文件路径</param>
        /// <param name="targetPath">目标文件路径</param> 
        /// <returns>true=转换成功</returns>
        public static bool ProjectToPDF(string sourcePath, string targetPath)
        {
            bool result;
            object missing = Type.Missing;
            Microsoft.Office.Interop.MSProject.ApplicationClass application = null;
            try
            {
                application = new Microsoft.Office.Interop.MSProject.ApplicationClass();
                application.Visible = false;
                application.FileOpenEx(sourcePath);
                application.DocumentExport(targetPath,Microsoft.Office.Interop.MSProject.PjDocExportType.pjPDF);
                result = true;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                result = false;
            }
            finally
            {
                if (application != null)
                {
                    application.DocClose();
                    application.Quit();
                    application = null;
                }
                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();
                GC.WaitForPendingFinalizers();
            }
            return result;
        }
    }
}

如果需要将Publish等其他文档进行转码，或者将文档转为其他格式（如xps），参照以上代码就可以了。原理其实很简单，比如说word2010，只要点击另存为，就会出现很多格式供你选择，这里正是调用了此接口。

尝试过使用Apache的OpenOffice进行转码，Word、Execel、Ppt勉强还可以转换（没有复杂图形），但效果也不好，其他的文档类型，OpenOffice根本无能为力，后来为了简单起见，就使用了原生态的Office接口。

转码的用途（好处）：可以在浏览器直接预览文档（由于项目组文档共享的需要，于是就开发了这么个玩意，配合WebServer，在文件上传后就立即进行转码，以后点击该文档，就返回转码后的文档，浏览器就可以直接浏览，很方便~）

本文地址

小小总结一下

采用C#的好处：100%完美转码，Perfect！不足：只能部署在windows服务器~

采用OpenOffice的好处：跨平台。不足：转码效果不理想~

提醒

以上是核心代码，在调用过程中，可能会出现以下问题导致转码失败：

1.文档被占用，解决方法：在转码前先复制一份，然后对副本进行转码~

2.文档损坏，解决方法：修复后再转~

3.文档带有密码，解决方法：未尝试~

4.……

要保证转码的成功率，还需要大量的调试和改进~

下载可执行文件