C#实现word和pdf格式互转

//using spire.doc;
//using spire.pdf;
using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.threading.tasks;
//using aspose.words;
using microsoft.office.interop.word;
using system.windows.forms;
using application = microsoft.office.interop.word.application;
 
namespace file_operations
{
    public partial class word转pdf : form
    {
        public word转pdf()
        {
            initializecomponent();
            //窗体居中
            this.startposition = formstartposition.centerscreen;
            //无边框
            this.formborderstyle = formborderstyle.none;
            //放大无效
            this.maximizebox = false;
            //版权
            label4.text = "该应用由昔舍版权所有，如修改源码请联系15574296763@163.com，侵权后果自负!!!";
        }
 
        private void button1_click(object sender, eventargs e)
        {
            openfiledialog openfiledialog = new openfiledialog();
            if(openfiledialog.showdialog() == dialogresult.ok)
            {
                string file = openfiledialog.filename.tolower();
                //获取文件扩展名
                string extension = system.io.path.getextension(file);
                if(extension != ".doc" && extension != ".docx")
                {
                    messagebox.show("请选择word文件", "错误提示");
                }
                else {
                    textbox1.text = file;
 
                }
            }
        }
 
        private void button2_click(object sender, eventargs e)
        {
           folderbrowserdialog folderbrowserdialog = new folderbrowserdialog();
            if(folderbrowserdialog.showdialog() == dialogresult.ok)
            {
                textbox2.text = folderbrowserdialog.selectedpath+"\\";
            }
        }
 
        //保存为pdf
        private void button3_click(object sender, eventargs e)
        {
            if (textbox1.text.length == 0 && textbox2.text.length == 0 && textbox3.text.length ==0)
            {
                messagebox.show("请选择要转换的原文件和要保存的路径", "错误提示");
            }
            else
            {
                try
                {
                    //创建一个word实例
                    application wordapp = new application();
                //创建一个word文档对象，并打开word文件
                document worddoc = wordapp.documents.open(textbox1.text);
                    //获取文件扩展名
                    string extension = system.io.path.getextension(textbox2.text);
                    //设置保存路径，保存文件名称和文件格式
                    if (extension !=".pdf")
                    {
                        try
                        {
                            string savepath = textbox2.text + textbox3.text + ".pdf";
                            worddoc.saveas2(savepath, wdsaveformat.wdformatpdf);
                        }
                        catch
                        {
                            messagebox.show("请检查选择的文件是否有效，保存的路径是否存在", "错误提示");
                        }
                    }
                    else
                    {
                        try
                        {
                            string savepath = textbox2.text + textbox3.text;
                            worddoc.saveas2(savepath, wdsaveformat.wdformatpdf);
                        }
                        catch
                        {
                            messagebox.show("请检查选择的文件是否有效，保存的路径是否存在", "错误提示");
                        }
 
                    }
                    //保存以后打开文件路径
                    string openfilepath = textbox2.text;
                    system.diagnostics.process.start(openfilepath);
                }
                catch (exception ex)
                {
                    messagebox.show("请检查选择的文件是否有效，保存的路径是否存在", "错误提示");
                }
 
            }
        }
 
            private void linklabel1_linkclicked(object sender, linklabellinkclickedeventargs e)
        {
            pdf转word pdf = new pdf转word();
            //隐藏本窗体
            this.hide();
            //打开pdf转word
            pdf.show();
        }
 
        private void linklabel2_linkclicked(object sender, linklabellinkclickedeventargs e)
        {
            this.close();
            pdf转word pdf = new pdf转word();
            pdf.close();
        }
    }
}

using spire.pdf;
using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.threading.tasks;
using system.windows.forms;
using microsoft.office.interop.word;
using application = microsoft.office.interop.word.application;
using system.threading;
 
namespace file_operations
{
    public partial class pdf转word : form
    {
        public pdf转word()
        {
            initializecomponent();
            //窗体居中
            this.startposition = formstartposition.centerscreen;
            //无边框
            this.formborderstyle = formborderstyle.none;
            //放大无效
            this.maximizebox = false;
            //版权
            label4.text = "该应用由昔舍版权所有，如修改源码请联系15574296763@163.com，侵权后果自负!!!";
        }
 
        private void button1_click(object sender, eventargs e)
        {
            //获取pdf文件
            openfiledialog openfiledialog = new openfiledialog();
            if(openfiledialog.showdialog() == dialogresult.ok)
            {
                //获取文件名
                string files = openfiledialog.filename.tolower();
                //获取文件扩展名
                string extension = system.io.path.getextension(files);
                if(extension != ".pdf")
                {
                    messagebox.show("请选择pdf文件", "错误提示");
                }
                else
                {
                    pdftext.text = files;
                }
 
            }
        }
 
        private void button2_click(object sender, eventargs e)
        {
            folderbrowserdialog openfiledialog = new folderbrowserdialog();
            if(openfiledialog.showdialog() == dialogresult.ok) {
                wordpath.text = openfiledialog.selectedpath + "\\";
            }
        }
 
        private void button3_click(object sender, eventargs e)
        {
 
           //初始化pdfdocument实例
           pdfdocument doc = new pdfdocument();
            try
            {
                //加载pdf文档
                doc.loadfromfile(pdftext.text);
                //保存为doc格式文档
                string savepath = wordpath.text + wordname.text + ".doc";
                doc.savetofile(savepath, fileformat.doc);
                thread.sleep(3000);
                //保存以后打开文件路径
                string openfilepath = wordpath.text;
                system.diagnostics.process.start(openfilepath);
            }
            catch
            {
                messagebox.show("请确定文件选择正确", "错误提示");
            }
        }
 
        private void linklabel1_linkclicked(object sender, linklabellinkclickedeventargs e)
        {
            this.close();
            word转pdf word = new word转pdf();
            word.close();
        }
 
        private void linklabel2_linkclicked(object sender, linklabellinkclickedeventargs e)
        {
            word转pdf word = new word转pdf();
            //隐藏本窗体
            this.hide();
            word.show();
        }
    }
}