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C# WinForm实现自动更新程序的方法详解

开发者 https://www.devze.com 2022-12-02 11:32 出处:网络 作者: Csharp小记
目录开发环境开发工具实现代码实现效果代码解析这一篇就着重写一下客户端的代码,客户端主要实现的有:启动后检测本地的XML文件,然后发送到服务器获取需要更新的文件以及版本列表。循环下载。下载成功后,备份原始文
目录
  • 开发环境
  • 开发工具
  • 实现代码
  • 实现效果
  • 代码解析

这一篇就着重写一下客户端的代码,客户端主要实现的有:启动后检测本地的XML文件,然后发送到服务器获取需要更新的文件以及版本列表。循环下载。下载成功后,备份原始文件->复制到主目录(若失败进行回滚)->修改本地xml文件,更新完成后打开主程序。

开发环境

.NET Core 3.1

开发工具

Visual Studio 2019

实现代码

/// <summary>
        /// 更新自己
        /// </summary>
        private void CopyRun() {

            string runPath = Process.GetCurrentProcess().MainModule.FileName;
            string runName = Path.GetFileName(runPath);

            if(!runName.StartsWith("_")) {
                string copyPath = runPath.Replace(runName, "_" + runName);
                byte[] bytes;
                using(FileStream fileStream = new FileStream(runPath, FileMode.Open, FileAccess.Read)) {
                    bytes = new byte[fileStream.Length];
                    fileStream.Read(bytes, 0, bytes.Length);
                }
                using(FileStream fileStream = new FileStream(copyPath, FileMode.Create, FileAccess.Write)) {
                    fileStream.Write(bytes);
                }

                ProcessStartInfo info = new ProcessStartInfo(copyPath, _runApp);
                Process.Start(info);
                Environment.Exit(0);
            }

        }

        /// <summary>
        /// 更新UI
        /// <http://www.devze.com;/summary>
        /// <param name="actoin"></param>
        private void UpdateUI(Action actoin) {
            if(this.InvokeRequired) {
                this.BeginInvoke(actoin);
            }
            else {
                actoin();
            }
        }

        /// <summary>
        /// 获取本地更新地址
        /// </summary>
        /// <returns></returns>
        private string GetUpdateUrl() {
            XElement xele = XElement.Load(updateXml);
            string url = xele.Element("url").Value;
            return url;
        }

        /// <summary>
        /// 获取本地更新文件
        /// </summary>
        /// <returns></returns>
        private string GetUpdateFiles() {
            XDocument xdoc = XDocument.Load(updateXml);
            var files = from f in xdoc.Root.Element("files").Elements() select new { name = f.Attribute("name").Value, vers开发者_开发入门ion = f.Attribute("version").Value };
            return jsonConvert.SerializeObject(files);
        }

        /// <summary>
        /// 更新完成后修改版本文件
        /// </summary>
        /// <param name="list"></param>
        private void UpdateXml(List<UpdateModel> list) {
            XDocument xdoc = XDocument.Load(updateXml);
            foreach(var model in list) {
                var ele_files = xdoc.Root.Element("files");

                XElement xele = ele_files.Elements().FirstOrDefault(s => s.Attribute("name").Value == model.name);
                if(xele != null) {
                    xele.SetAttributeValue("version", model.version);
                }
                else {
                    XElement addXele = new XElement("file");
                    addXele.SetAttributeValue("name", model.name);
                    addXele.SetAttributeValue("version", model.version);
                    ele_files.Add(addXele);
                }
            }
            xdoc.Save(updateXml);
        }
readonly string _runApp;
        public Form_update(string runApp) {
            InitializeComponent();
            _runApp = runApp;
            //CopyRun();
        }
        readonly string updateXml = Application.StartupPath + "UpdateList.xml";
        private void btn_update_Click(object sender, EventArgs e) {
            #region 设置ui
            btn_update.Enabled = false;
            label_status.Text = "正在更新";
            #endregion

            #region 初始化路径
            string savePath = Application.StartupPath + "temp_update\\";
            string backPath = Application.StartupPath + "temp_back\\";
            if(Directoandroidry.Exists(savePath)) {
                Directory.Delete(savePath, true);
            }
            Directory.CreateDirectory(savePath);

            if(Directory.Exists(backPath)) {
                Directory.Delete(backPath, true);
            }
            Directory.CreateDirectory(backPath);

            #endregion

            #region 图标旋转
            int angle = 0;
            Image img = pictureBox1.BackgroundImage;

            System.Threading.Timer timer = new System.Threading.Timer(s => {
                UpdateUI(() => {
                    angle = angle == 360 ? 0 : angle + 10;
                    pictureBox1.BackgroundImage = img.RotateImage(angle);
                });
            }, null, 0, 100);
            #endregion

            #region 下载更新
            string url = GetUpdateUrl();
            bool isSuccess = false;
            Task.Run(() => {
                try {
                    //获取下载列表
                    HttpResult httpResult = HttpUtil.HttpRequest(new HttpItem(url + "GetUpdateFiles", requestData: GetUpdateFiles()));
                    if(httpResult.Status) {
                        UpdateModel_Out output = JsonConvert.DeserializeObject<UpdateModel_Out>(httpResult.HttpStringData);

                        if(output.u编程pdateList.Count == 0) {
                            throw new Exception("当前已是最新版本");
                        }

                        UpdateUI(() => {
                            progressBar1.Maximum = output.updateList.Count + 1;
                        });
                        //循环下载文件
                        for(int i = 0; i < output.updateList.Count; i++) {

                            UpdateModel updateModel = output.updateList[i];
                            #region 进度条
                            UpdateUI(() => {
                                label_status.Text = $"正在更新第 {i + 1}/{output.updateList.Count} 个文件,文件名:{updateModel.name}";
                                progressBar1.Value = i + 1;
                            });
                            #endregion

                            #region 下载文件
                            httpResult = HttpUtil.HttpRequest(new HttpItem(url + "DownloadFile", requestData: JsonConvert.SerializeObject(updateModel)));
                            if(httpResult.Status) {
                                using(FileStream fileStream = new FileStream(savePath + updateModel.name, FileMode.Create)) {
                                    fileStream.Write(httpResult.HttpByteData, 0, httpResult.HttpByteData.Length);
                                }
                            }
                            else {
                                throw new Exception(updateModel.name + "下载失败,请重试");
                            }
                            #endregion

                            Task.Delay(1000).Wait();
                        }

                        #region 备份
                        UpdateUI(() => {
                            label_status.Text = "正在备份";
                        });
                        try {
                            File.Copy(updateXml, backPath + "UpdateList.xml");
                            foreach(var file in output.updateList) {
                                if(File.Exists(Application.StartupPath + file.name)) {
                                    File.Copy(Application.StartupPath + file.name, backPath + file.name, true);
                                }
                            }
                        }
                        catch { }
                        #endregion

                        #region 完成更新
                        UpdateUI(() => {
                            label_status.Text = "正在完成更新";
                        编程客栈    progressBar1.Value = progressBar1.Maximum;
                        });
                        string[] files = Directory.GetFiles(savePath);
                        try {
                            #region 更新成功
                            foreach(string file in files) {
                                File.Copy(file, Application.StartupPath + Path.GetFileName(file), true);
                            }
                            Directory.Delete(savePath, true);
                            #region 保存最新版本
                            UpdateXml(output.updateList);
                            isSuccess = true;
                            UpdateUI(() => {
                                label_status.Text = "更新完成";
                            });
                            #endregion
                            #endregion
                        }
                        catch {
                            #region 失败回滚
                            UpdateUI(() => {
                                label_status.Text = "更新失败,正在回滚";
                            });
                            string[] files_back = Directory.GetFiles(backPath);
                            foreach(string file in files_back) {
                                File.Copy(file, Application.StartupPath + Path.GetFileName(file), true);
                            }
                            File.Copy(backPath + "UpdateList.xml", updateXml, true);
                            UpdateUI(() => {
                                label_status.Text = "回滚完成";
                            });
                            return;
                            #endregion
                        }
                        #endregion
                    }
                    else {
                        throw new Exception("获取更新列表失败");
                    }
                }
                catch(Exception ex) {
                    UpdateUI(() => {
                        label_status.Text = "更新失败!" + ex.Message;
                        btn_update.Enabled = true;
                    });
                }
                finally {
                    UpdateUI(() => {
                        timer.Change(-1, -1);
                        pictureBox1.BackgroundImage = img;
                        if(isSuccess) {
                            if(File.Exists(_runApp)) {
                                if(MessageBox.Show("更新完成,是否打开程序", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes) {
                                    Process.Start(_runApp);
                                }
                                Environment.Exit(0);
                            }
                        }
                    });
                }
            });
            #endregion

        }

        private void btn_close_Click(object sender, EventArgs e) {
            Close();
        }

        private void panel1_Paint(objechttp://www.devze.comt sender, PaintEventArgs e) {
            Pen pen = new Pen(Color.LightGray);
            e.Graphics.DrawLine(pen, new Point(36, 36), new Point(panel1.Width - 36, 36));
        }

实现效果

C# WinForm实现自动更新程序的方法详解

代码解析

主要注释已经在代码中标注了,由于基本都是在线程中进行操作的,所以在更新UI的时候封装了UpdateUI方法,然后就是加了一个定时器实现图标的旋转。关于CopyRun(更新自己)方法,就是用来更新自动更新程序本身的,即运行之前复制一份本身,然后启动复制的程序,否则本身正在运行的时候是不能更新自己的。

以上就是C# WinForm实现自动更新程序的方法详解的详细内容,更多关于C# WinForm自动更新程序的资料请关注我们其它相关文章!

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