C# WinForm实现自动更新程序之客户端的示例代码

//更新程序
namespace AutoUpdate {
    static class Program {
        /// <summary>
        ///  The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main(string[] args) {
            if(args.Length != 1) {
                return;
            }
            var arg = args[0].Split("|*|");
            if(arg.Length == 0) {
                return;
            }
            string runPath = arg[0];
            string procesName = arg[1];
            Process[] processes = Process.GetProcesses();
            foreach(Process process in processes) {
                if(process.ProcessName == procesName) {
                    process.Kill(true);
                }
            }
            Application.SetHighDpiMode(HighDpiMode.SystemAware);
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form_update(runPath));
        }
    }
}

//主程序
namespace AutoUpdate.Test {
    static class Program {
        /// <summary>
        ///  The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() {

            Update();

            Application.SetHighDpiMode(HighDpiMode.SystemAware);
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }


        readonly static string updateXml = Application.StartupPath + "UpdateList.xml";
        /// <summary>
        /// 获取本地更新地址
        /// </summary>
        /// <returns></returns>
        static 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>
        static 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>
        /// 检查是否需要更新
        /// </summary>
        /// <returns></returns>
        static bool CheckUpdate() {
            string url = GetUpdateUrl();
            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)
                    return true;
            }
            return false;
        }

        static void Update() {
            if(CheckUpdate()) {
                string processName = Assembly.GetExecutingAssembly().GetName().Name;

                ProcessStartInfo info = new ProcessStartInfo(Application.StartupPath + "AutoUpdate.exe", Process.GetCurrentProcess().MainModule.FileName + "|*|" + processName);
                Process.Start(info);
                Environment.Exit(0);
            }
        }
    }
}

public static class ImageEx {
        /// <summary>
        /// 旋转图片
        /// </summary>
        /// <param name="image"></param>
        /// <param name="angle"></param>
        /// <returns></returns>
        public static Image RotateImage(this Image image, float angle) {
            if(image == null)
                throw new ArgumentNullException("image");
            float dx = image.Width / 2.0f;
            float dy = image.Height / 2.0f;

            Bitmap rotatedBmp = new Bitmap(image.Width, image.Height);
            rotatedBmp.SetResolution(image.HorizontalResolution, image.VerticalResolution);

            Graphics g = Graphics.FromImage(rotatedBmp);
            g.TranslateTransform(dx, dy);
            g.RotateTransform(angle);
            g.TranslateTransform(-dx, -dy);
            g.DrawImage(image, new PointF(0, 0));

            g.Dispose();
            return rotatedBmp;
        }
    }