openoffice 转化 文档至 pdf 执行失败
帮我看下下面这个程序， 关于 调用openoffice 将文档转化为 pdf的
namespace ConsoleApplication12
{
    class Program
    {
        private static Mutex _openOfficeLock = new Mutex(false, "OpenOfficeMutexLock-MiloradCavic");
        static void Main(string[] args)
        {
            bool obtained = _openOfficeLock.WaitOne(60 * 1000, false);
            try
            {


                if (!obtained)
                {
                    throw new System.Exception(string.Format("Request for using OpenOffice wasn't served after {0} seconds. Aborting...", 30));
                }



                string filename =PathConverter("E:/test.doc");

                PropertyValue[] propertyValues = new PropertyValue[1];
                propertyValues[0] = new unoidl.com.sun.star.beans.PropertyValue();
                propertyValues[0].Name = "Hidden";
                propertyValues[0].Value = new uno.Any(true);



                //我们打开并连接一个OOo程序，这需要创建一个XComponentContext对象：
                XComponentContext xContext = uno.util.Bootstrap.bootstrap();

                // 创建 xFactory
                XMultiServiceFactory xFactory = (XMultiServiceFactory)xContext.getServiceManager();


                //创建XComponentLoader对象：
                XComponentLoader xLoader = (XComponentLoader)xFactory.createInstance("com.sun.star.frame.Desktop");
                

                // 准备开始加载文档

                // Preparing properties for loading the document