C# WinForm实现自动更新程序的案例分享

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

/// </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, version = 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(Directory.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.updateList.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";

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(object sender, PaintEventArgs e) {

Pen pen = new Pen(Color.LightGray);

e.Graphics.DrawLine(pen, new Point(36, 36), new Point(panel1.Width - 36, 36));

}