一个自动更新的简单实现(通过反射解耦) - -==NoWay.==- - 博客园

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-==NoWay.==- · 2011-02-15 · via 博客园 - -==NoWay.==-

更新模块的代码:

代码

更新模块的UI:

代码

    public partial class FrmMain : Form
    {
        public FrmMain()
        {
            InitializeComponent();
        }

XmlDocument doc

= new XmlDocument();#region "Disable the 'X'"
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                const int CS_NOCLOSE = 0x200;
                cp.ClassStyle = cp.ClassStyle | CS_NOCLOSE;
                return cp;
            }
        }
        #endregionprivate void FrmMain_Load(object sender, EventArgs e)
        {
            string config = Path.Combine(Path.GetTempPath(),"Updater.xml");
            doc.Load(config);
            this.lblProduct.Text = doc.SelectSingleNode("/Updater/ProductName").InnerText;
            this.lblNewVer.Text = "new version:" + doc.SelectSingleNode("/Updater/Version").InnerText;
            this.lblOriginVer.Text = "old version:" + UpdaterModule.Version;
            MethodInvoker mi = new MethodInvoker(UpdateSys);
            mi.BeginInvoke(new AsyncCallback(Finished),null);
        }private void Finished(IAsyncResult result)
        {
            if (result.IsCompleted)
            {
                Process.Start(Path.Combine(Application.StartupPath,doc.SelectSingleNode("/Updater/MainExe").InnerText));
                this.Close();
            }
        }private delegate void StringDelegate(string info);
        private delegate void IntDelegate(int value);private void SetInfo(string info)
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new StringDelegate(SetInfo), info);
                return;
            }
            else
            {
                this.lblInfo.Text = info;
            }
        }private void SetTotalValue()
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new MethodInvoker(SetTotalValue));
                return;
            }
            else
            {
                this.pbTotal.Value++;
            }
        }private void SetTotalMax(int value)
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new IntDelegate(SetTotalMax), value);
                return;
            }
            else
            {
                this.pbTotal.Maximum = value;
            }
        }private void UpdateSys()
        {
            if (UpdaterModule.Debug)
            {
                System.Diagnostics.Debugger.Break();
            }
            //根据临时文件夹中的文件进行下载
            WebClient wc = new WebClient();
            string updatePath = doc.SelectSingleNode("/Updater/UpdatePath").InnerText;
            XmlNodeList xnl = doc.SelectNodes("/Updater/Files/File");
            SetTotalMax(xnl.Count);
            foreach (XmlNode xn in xnl)
            {
                try
                {
                    string localFile = Path.Combine(Application.StartupPath, xn.Attributes["Name"].Value);
                    string dir = Path.GetDirectoryName(localFile);
                    if (!Directory.Exists(dir))
                        Directory.CreateDirectory(dir);
                    SetInfo("processing:" + localFile);
                    wc.DownloadFile(GetUri(updatePath, xn.Attributes["Name"].Value), localFile);
                }
                catch (Exception)
                {
                    if (UpdaterModule.Debug)
                    {
                        Debugger.Break();
                    }
                }
                SetTotalValue();
            }
        }static string GetUri(string uri, string filename)
        {
            return (uri.Trim('/') + "/" + filename.Trim('/')).Replace('\\','/');
        }

        string GetTempDir()
        {
            string dir = Path.GetTempPath();
            if (!Directory.Exists(dir))
                Directory.CreateDirectory(dir);
            return dir;
        }

}

配置文件:

代码

调用方:

代码

    static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            bool flag = false;
            Assembly assm = typeof(Program).Assembly;
            Mutex mutex = new Mutex(true, ((GuidAttribute)(assm.GetCustomAttributes(typeof(GuidAttribute), false)[0])).Value, out flag);
            if (!flag)
            {
                MessageBox.Show("已经存在一个数据化病案系统，无法再启动！");
            }
            else
            {//自动更新
                SyscUpdateModule();
                if (IsServerActive())
                {
                    if (IsVersionAvailable() == DialogResult.Yes)
                    {
                        Update();
                    }
                    else
                    {
                        StartApp();
                    }
                }
                else
                {
                    StartApp();
                }
            }
        }static void StartApp()
        {

Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(

false);
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
            FrmLogin frmLogin = new FrmLogin();
            if (frmLogin.ShowDialog() == DialogResult.OK)
            {
                WinFormsHelper.FindContentOrCreate<FrmMRViewer>().Hide();
                Application.Run(FrmMain.Instance);
                //Application.Run(new FrmSpecialMR());
            }
        }static bool IsServerActive()
        {
            string assemFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Updater.exe");
            Assembly assem = Assembly.LoadFrom(assemFile);
            Type type = assem.GetType("Updater.UpdaterModule");
            Object instant = Activator.CreateInstance(type);
            MethodInfo miCheck = type.GetMethod("IsServerActive");
            return (bool)miCheck.Invoke(instant, null);
        }static DialogResult IsVersionAvailable()
        {
            string assemFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Updater.exe");
            Assembly assem = Assembly.LoadFrom(assemFile);
            Type type = assem.GetType("Updater.UpdaterModule");
            Object instant = Activator.CreateInstance(type);
            MethodInfo miUpdate = type.GetMethod("IsVersionAvailable");
            return (DialogResult)miUpdate.Invoke(instant, null);
        }static void Update()
        {
            Process.Start(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Updater.exe"));
            Application.Exit();
        }/// <summary>
        /// 更新更新文件
        /// </summary>
        static void SyscUpdateModule()
        {
            try
            {
                string localFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Updater.exe");
                FileInfo localFI = new FileInfo(localFile);
                XPathDocument doc = new XPathDocument(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Updater.xml"));
                XPathNavigator nav = doc.CreateNavigator();
                string updatePath = nav.SelectSingleNode("/Updater/UpdatePath").Value;
                string remoteFile = GetUri(updatePath, "Updater.exe");
                FileInfo remoteFI = DownloadHttpFile(remoteFile);
                if (remoteFI.LastWriteTime > localFI.LastWriteTime || localFI.Length != remoteFI.Length)
                {
                    File.Copy(remoteFI.FullName, localFile, true);
                }
            }
            catch (Exception)
            {
            }
        }static FileInfo DownloadHttpFile(string url)
        {
            Uri uri = new Uri(url);
            string localFile = Path.Combine(GetTempDir(), Path.GetFileName(uri.AbsolutePath));

WebClient wc

= new WebClient();
            wc.DownloadFile(url, localFile);
            return new FileInfo(localFile);
        }static string GetUri(string uri, string filename)
        {
            return uri.Trim('/') + "/" + filename.Trim('/');
        }static string GetTempDir()
        {
            string dir = Path.GetTempPath();
            if (!Directory.Exists(dir))
                Directory.CreateDirectory(dir);
            return dir;
        }static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            Form currentForm = null;
            if (null != Application.OpenForms && 0 != Application.OpenForms.Count)
            {
                currentForm = Application.OpenForms[0];
            }
            Exception ae = e.ExceptionObject as Exception;
            if (null != ae)
            {
                if (null == currentForm)
                {

MessageBox.Show(ae.Message,

"错误", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
                }
                else
                {
                    MessageBox.Show(currentForm, ae.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
                }
            }
        }

}

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