c#开发word批量转pdf源码分享

微软office word本身已经提供了另存为pdf文档功能，对于少量文档，手工使用该方式进行word转换为pdf尚可，一旦需要处理大量的文档，可能就显得有些捉襟见肘了。不过对于已经安装有office环境，借助一些简单的代码即可实现批量word转pdf了。

源码：

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.diagnostics;
using system.io;
using system.text;
using system.threading;
using microsoft.office.interop.word;

namespace word2pdf
{
    class program
    {
        public static microsoft.office.interop.word.document worddocument { get; set; }

        static void main(string[] args)
        {
            string strfolder_f = null;
            string strfolder_t = null;
            string strflag = null;
            system.console.writeline("请输入word文档所在目录");
            strfolder_f = system.console.readline();
            if (strfolder_f.substring(strfolder_f.length - 1, 1) != "\\")
            {
                strfolder_f += "\\";
            }
            strfolder_t = strfolder_f + @"pdf\";
            system.console.writeline("\n创建pdf文档，请确认！");
            system.console.write("y(yes) or n(no) ?  ");
            strflag = system.console.readline();
            if (strflag == "y")
            {
                system.console.writeline("\n开始创建pdf文档...");
                checkfolder(strfolder_t);
                string strpdffile = null;
                directoryinfo thefolder = new directoryinfo(strfolder_f);

                microsoft.office.interop.word.application appword = new microsoft.office.interop.word.application();
                object parammissing = type.missing;

                foreach (fileinfo nextfile in thefolder.getfiles())
                {
                    strpdffile = path.changeextension(strfolder_t + nextfile.name, ".pdf");
                    worddocument = appword.documents.open(nextfile.fullname);
                    if (worddocument != null)
                    {
                        worddocument.exportasfixedformat(strpdffile, wdexportformat.wdexportformatpdf);
                        worddocument.close(ref parammissing, ref parammissing, ref parammissing);
                        worddocument = null;
                    }
                    system.console.write(".. ");
                }

                if (appword != null)
                {
                    appword.quit(ref parammissing, ref parammissing, ref parammissing);
                    appword = null;
                }
            }

            //killprocessbyname("winword");
            gc.collect();
            gc.waitforpendingfinalizers();

            system.console.write("\n处理完毕，输入任意键退出");
            system.console.readkey();
        }

        static void checkfolder(string strfolderpath)
        {
            if (directory.exists(strfolderpath))
            {
                directory.delete(strfolderpath, true);
                directory.createdirectory(strfolderpath);
            }
            else
            {
                directory.createdirectory(strfolderpath);
            }
        }

        static void killprocessbyname(string name)
        {
            process[] ps = process.getprocessesbyname(name);
            foreach (process p in ps)
            {
                if (p.processname == name)
                    p.kill();
            }
        }
    }
}

需要注意的两个问题：①及时关闭代码中所打开的文档，见49行，否则会产生临时文件；②及时关闭“winword”线程，否则所处理的word文档会一直处于被该线程占用的情况。