一、引言

对于C/S架构来说，软件更新是一个很常用的功能，下面介绍一种非常实用的软件自动升级方案。

二、示意图

三、项目说明

3.1、项目创建

新建4个项目，如下所示：

3.2、项目关系

四、LinkTo.Toolkit

LinkTo.Toolkit主要是一些Utility及Helper类文件，实现转换扩展、文件读写、进程处理等功能。

    /// <summary>
    /// 转换扩展类
    /// </summary>
    public static class ConvertExtension
    {
        public static string ToString2(this object obj)
        {
            if (obj == null)
                return string.Empty;
            return obj.ToString();
        }

        public static DateTime? ToDateTime(this string str)
        {
            if (string.IsNullOrEmpty(str)) return null;
            if (DateTime.TryParse(str, out DateTime dateTime))
            {
                return dateTime;
            }
            return null;
        }

        public static bool ToBoolean(this string str)
        {
            if (string.IsNullOrEmpty(str)) return false;
            return str.ToLower() == bool.TrueString.ToLower();
        }

        public static bool IsNullOrEmpty(this string str)
        {
            return string.IsNullOrEmpty(str);
        }

        public static int ToInt(this string str)
        {
            if (int.TryParse(str, out int intValue))
            {
                return intValue;
            }
            return 0;
        }

        public static long ToLong(this string str)
        {
            if (long.TryParse(str, out long longValue))
            {
                return longValue;
            }
            return 0;
        }

        public static decimal ToDecimal(this string str)
        {
            if (decimal.TryParse(str, out decimal decimalValue))
            {
                return decimalValue;
            }
            return 0;
        }

        public static double ToDouble(this string str)
        {
            if (double.TryParse(str, out double doubleValue))
            {
                return doubleValue;
            }
            return 0;
        }

        public static float ToFloat(this string str)
        {
            if (float.TryParse(str, out float floatValue))
            {
                return floatValue;
            }
            return 0;
        }

        /// <summary>
        /// DataRow转换为实体类
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="dr"></param>
        /// <returns></returns>
        public static T ConvertToEntityByDataRow<T>(this DataRow dataRow) where T : new()
        {
            Type type = typeof(T);
            PropertyInfo[] properties = type.GetProperties();
            T t = new T();
            if (dataRow == null) return t;
            foreach (PropertyInfo property in properties)
            {
                foreach (DataColumn column in dataRow.Table.Columns)
                {
                    if (property.Name.Equals(column.ColumnName, StringComparison.OrdinalIgnoreCase))
                    {
                        object value = dataRow[column];
                        if (value != null && value != DBNull.Value)
                        {
                            if (value.GetType().Name != property.PropertyType.Name)
                            {
                                if (property.PropertyType.IsEnum)
                                {
                                    property.SetValue(t, Enum.Parse(property.PropertyType, value.ToString()), null);
                                }
                                else
                                {
                                    try
                                    {
                                        value = Convert.ChangeType(value, (Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType));
                                        property.SetValue(t, value, null);
                                    }
                                    catch { }
                                }
                            }
                            else
                            {
                                property.SetValue(t, value, null);
                            }
                        }
                        else
                        {
                            property.SetValue(t, null, null);
                        }
                        break;
                    }
                }
            }
            return t;
        }

        /// <summary>
        /// 通用简单实体类型互转
        /// </summary>
        public static T ConvertToEntity<T>(this object sourceEntity) where T : new()
        {
            T t = new T();
            Type sourceType = sourceEntity.GetType();
            if (sourceType.Equals(typeof(DataRow)))
            {
                //DataRow类型
                DataRow dataRow = sourceEntity as DataRow;
                t = dataRow.ConvertToEntityByDataRow<T>();
            }
            else
            {
                Type type = typeof(T);
                PropertyInfo[] properties = type.GetProperties();
                PropertyInfo[] sourceProperties = sourceType.GetProperties();
                foreach (PropertyInfo property in properties)
                {
                    foreach (var sourceProperty in sourceProperties)
                    {
                        if (sourceProperty.Name.Equals(property.Name, StringComparison.OrdinalIgnoreCase))
                        {
                            object value = sourceProperty.GetValue(sourceEntity, null);
                            if (value != null && value != DBNull.Value)
                            {
                                if (sourceProperty.PropertyType.Name != property.PropertyType.Name)
                                {
                                    if (property.PropertyType.IsEnum)
                                    {
                                        property.SetValue(t, Enum.Parse(property.PropertyType, value.ToString()), null);
                                    }
                                    else
                                    {
                                        try
                                        {
                                            value = Convert.ChangeType(value, (Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType));
                                            property.SetValue(t, value, null);
                                        }
                                        catch { }
                                    }
                                }
                                else
                                {
                                    property.SetValue(t, value, null);
                                }
                            }
                            else
                            {
                                property.SetValue(t, null, null);
                            }
                            break;
                        }
                    }
                }
            }
            return t;
        }

        /// <summary>
        /// 通用简单实体类型互转
        /// </summary>
        public static List<T> ConvertToEntityList<T>(this object list) where T : new()
        {
            List<T> t = new List<T>();
            if (list == null) return t;
            Type sourceObj = list.GetType();
            if (sourceObj.Equals(typeof(DataTable)))
            {
                var dataTable = list as DataTable;
                t = dataTable.Rows.Cast<DataRow>().Where(m => !(m.RowState == DataRowState.Deleted || m.RowState == DataRowState.Detached)).Select(m => m.ConvertToEntityByDataRow<T>()).ToList();
            }
            else if (list is IEnumerable)
            {
                t = ((IList)list).Cast<object>().Select(m => m.ConvertToEntity<T>()).ToList();
            }
            return t;
        }

        /// <summary>
        /// 转换为DataTable，如果是集合没有数据行的时候会抛异常。
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static DataTable ConvertToDataTable(this object list)
        {
            if (list == null) return null;
            DataTable dataTable = new DataTable();
            if (list is IEnumerable)
            {
                var li = (IList)list;
                //li[0]代表的是一个对象，list没有行时，会抛异常。
                PropertyInfo[] properties = li[0].GetType().GetProperties();
                dataTable.Columns.AddRange(properties.Where(m => !m.PropertyType.IsClass || !m.PropertyType.IsInterface).Select(m =>
                    new DataColumn(m.Name, Nullable.GetUnderlyingType(m.PropertyType) ?? m.PropertyType)).ToArray());
                foreach (var item in li)
                {
                    DataRow dataRow = dataTable.NewRow();
                    foreach (PropertyInfo property in properties.Where(m => m.PropertyType.GetProperty("Item") == null))    //过滤含有索引器的属性
                    {
                        object value = property.GetValue(item, null);
                        dataRow[property.Name] = value ?? DBNull.Value;
                    }
                    dataTable.Rows.Add(dataRow);
                }
            }
            else
            {
                PropertyInfo[] properties = list.GetType().GetProperties();
                properties = properties.Where(m => m.PropertyType.GetProperty("Item") == null).ToArray();   //过滤含有索引器的属性
                dataTable.Columns.AddRange(properties.Select(m => new DataColumn(m.Name, Nullable.GetUnderlyingType(m.PropertyType) ?? m.PropertyType)).ToArray());
                DataRow dataRow = dataTable.NewRow();
                foreach (PropertyInfo property in properties)
                {
                    object value = property.GetValue(list, null);
                    dataRow[property.Name] = value ?? DBNull.Value;
                }
                dataTable.Rows.Add(dataRow);
            }
            return dataTable;
        }

        /// <summary>
        /// 实体类公共属性值复制
        /// </summary>
        /// <param name="entity"></param>
        /// <param name="target"></param>
        public static void CopyTo(this object entity, object target)
        {
            if (target == null) return;
            if (entity.GetType() != target.GetType())
                return;
            PropertyInfo[] properties = target.GetType().GetProperties();
            foreach (PropertyInfo property in properties)
            {
                if (property.PropertyType.GetProperty("Item") != null)
                    continue;
                object value = property.GetValue(entity, null);
                if (value != null)
                {
                    if (value is ICloneable)
                    {
                        property.SetValue(target, (value as ICloneable).Clone(), null);
                    }
                    else
                    {
                        property.SetValue(target, value.Copy(), null);
                    }
                }
                else
                {
                    property.SetValue(target, null, null);
                }
            }
        }

        public static object Copy(this object obj)
        {
            if (obj == null) return null;
            object targetDeepCopyObj;
            Type targetType = obj.GetType();
            if (targetType.IsValueType == true)
            {
                targetDeepCopyObj = obj;
            }
            else
            {
                targetDeepCopyObj = Activator.CreateInstance(targetType);   //创建引用对象
                MemberInfo[] memberCollection = obj.GetType().GetMembers();

                foreach (MemberInfo member in memberCollection)
                {
                    if (member.GetType().GetProperty("Item") != null)
                        continue;
                    if (member.MemberType == MemberTypes.Field)
                    {
                        FieldInfo field = (FieldInfo)member;
                        object fieldValue = field.GetValue(obj);
                        if (fieldValue is ICloneable)
                        {
                            field.SetValue(targetDeepCopyObj, (fieldValue as ICloneable).Clone());
                        }
                        else
                        {
                            field.SetValue(targetDeepCopyObj, fieldValue.Copy());
                        }
                    }
                    else if (member.MemberType == MemberTypes.Property)
                    {
                        PropertyInfo property = (PropertyInfo)member;
                        MethodInfo method = property.GetSetMethod(false);
                        if (method != null)
                        {
                            object propertyValue = property.GetValue(obj, null);
                            if (propertyValue is ICloneable)
                            {
                                property.SetValue(targetDeepCopyObj, (propertyValue as ICloneable).Clone(), null);
                            }
                            else
                            {
                                property.SetValue(targetDeepCopyObj, propertyValue.Copy(), null);
                            }
                        }
                    }
                }
            }
            return targetDeepCopyObj;
        }
    }

    public class FileHelper
    {
        private readonly string strUpdateFilesPath;

        public FileHelper(string strDirector)
        {
            strUpdateFilesPath = strDirector;
        }

        //保存所有的文件信息
        private List<FileInfo> listFiles = new List<FileInfo>();

        public List<FileInfo> GetAllFilesInDirectory(string strDirector)
        {
            DirectoryInfo directory = new DirectoryInfo(strDirector);
            DirectoryInfo[] directoryArray = directory.GetDirectories();
            FileInfo[] fileInfoArray = directory.GetFiles();
            if (fileInfoArray.Length > 0) listFiles.AddRange(fileInfoArray);

            foreach (DirectoryInfo item in directoryArray)
            {
                DirectoryInfo directoryA = new DirectoryInfo(item.FullName);
                DirectoryInfo[] directoryArrayA = directoryA.GetDirectories();
                GetAllFilesInDirectory(item.FullName);
            }
            return listFiles;
        }

        public string[] GetUpdateList(List<FileInfo> listFileInfo)
        {
            var fileArrary = listFileInfo.Cast<FileInfo>().Select(s => s.FullName.Replace(strUpdateFilesPath, "")).ToArray();
            return fileArrary;
        }

        /// <summary>
        /// 删除文件夹下的所有文件但不删除目录
        /// </summary>
        /// <param name="dirRoot"></param>
        public static void DeleteDirAllFile(string dirRoot)
        {
            DirectoryInfo directoryInfo = new DirectoryInfo(Path.GetDirectoryName(dirRoot));
            FileInfo[] files = directoryInfo.GetFiles("*.*", SearchOption.AllDirectories);
            foreach (FileInfo item in files)
            {
                File.Delete(item.FullName);
            }
        }
    }

    public static class FileUtility
    {
        #region 读取文件
        /// <summary>
        /// 读取文件
        /// </summary>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        public static string ReadFile(string filePath)
        {
            string result = string.Empty;

            if (File.Exists(filePath) == false)
            {
                return result;
            }

            try
            {
                using (var streamReader = new StreamReader(filePath, Encoding.UTF8))
                {
                    result = streamReader.ReadToEnd();
                }
            }
            catch (Exception)
            {
                result = string.Empty;
            }

            return result;
        }

        #endregion 读文件

        #region 写入文件
        /// <summary>
        /// 写入文件
        /// </summary>
        /// <param name="filePath">文件路径</param>
        /// <param name="strValue">写入内容</param>
        /// <returns></returns>
        public static bool WriteFile(string filePath, string strValue)
        {
            try
            {
                if (File.Exists(filePath) == false)
                {
                    using (FileStream fileStream = File.Create(filePath)) { }
                }

                using (var streamWriter = new StreamWriter(filePath, true, Encoding.UTF8))
                {
                    streamWriter.WriteLine(strValue);
                }

                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }
        #endregion

        #region 删除文件
        /// <summary>
        /// 删除文件
        /// </summary>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        public static bool DeleteFile(string filePath)
        {
            try
            {
                File.Delete(filePath);
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }
        #endregion 删除文件

        #region 为文件添加用户组的完全控制权限
        /// <summary>
        /// 为文件添加用户组的完全控制权限
        /// </summary>
        /// <param name="userGroup">用户组</param>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        public static bool AddSecurityControll2File(string userGroup, string filePath)
        {
            try
            {
                //获取文件信息
                FileInfo fileInfo = new FileInfo(filePath);
                //获得该文件的访问权限
                FileSecurity fileSecurity = fileInfo.GetAccessControl();
                //添加用户组的访问权限规则--完全控制权限
                fileSecurity.AddAccessRule(new FileSystemAccessRule(userGroup, FileSystemRights.FullControl, AccessControlType.Allow));
                //设置访问权限
                fileInfo.SetAccessControl(fileSecurity);
                //返回结果
                return true;
            }
            catch (Exception)
            {
                //返回结果
                return false;
            }
        }
        #endregion

        #region 为文件夹添加用户组的完全控制权限
        /// <summary>
        /// 为文件夹添加用户组的完全控制权限
        /// </summary>
        /// <param name="userGroup">用户组</param>
        /// <param name="dirPath">文件夹路径</param>
        /// <returns></returns>
        public static bool AddSecurityControll2Folder(string userGroup,string dirPath)
        {
            try
            {
                //获取文件夹信息
                DirectoryInfo dir = new DirectoryInfo(dirPath);
                //获得该文件夹的所有访问权限
                DirectorySecurity dirSecurity = dir.GetAccessControl(AccessControlSections.All);
                //设定文件ACL继承
                InheritanceFlags inherits = InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit;
                //添加用户组的访问权限规则--完全控制权限
                FileSystemAccessRule usersFileSystemAccessRule = new FileSystemAccessRule(userGroup, FileSystemRights.FullControl, inherits, PropagationFlags.None, AccessControlType.Allow);
                dirSecurity.ModifyAccessRule(AccessControlModification.Add, usersFileSystemAccessRule, out bool isModified);
                //设置访问权限
                dir.SetAccessControl(dirSecurity);
                //返回结果
                return true;
            }
            catch (Exception)
            {
                //返回结果
                return false;
            }
        }
        #endregion
    }

    public static class ProcessUtility
    {
        #region 关闭进程
        /// <summary>
        /// 关闭进程
        /// </summary>
        /// <param name="processName">进程名</param>
        public static void KillProcess(string processName)
        {
            Process[] myproc = Process.GetProcesses();
            foreach (Process item in myproc)
            {
                if (item.ProcessName == processName)
                {
                    item.Kill();
                }
            }
        }
        #endregion
    }

    /// <summary>
    /// Xml序列化与反序列化
    /// </summary>
    public static class XmlUtility
    {
        #region 序列化

        /// <summary>
        /// 序列化
        /// </summary>
        /// <param name="type">类型</param>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static string Serializer(Type type, object obj)
        {
            MemoryStream Stream = new MemoryStream();
            XmlSerializer xml = new XmlSerializer(type);
            try
            {
                //序列化对象
                xml.Serialize(Stream, obj);
            }
            catch (InvalidOperationException)
            {
                throw;
            }
            Stream.Position = 0;
            StreamReader sr = new StreamReader(Stream);
            string str = sr.ReadToEnd();

            sr.Dispose();
            Stream.Dispose();

            return str;
        }

        #endregion 序列化

        #region 反序列化

        /// <summary>
        /// 反序列化
        /// </summary>
        /// <param name="type">类型</param>
        /// <param name="xml">XML字符串</param>
        /// <returns></returns>
        public static object Deserialize(Type type, string xml)
        {
            try
            {
                using (StringReader sr = new StringReader(xml))
                {
                    XmlSerializer xmldes = new XmlSerializer(type);
                    return xmldes.Deserialize(sr);
                }
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }

        /// <summary>
        /// 反序列化
        /// </summary>
        /// <param name="type"></param>
        /// <param name="xml"></param>
        /// <returns></returns>
        public static object Deserialize(Type type, Stream stream)
        {
            XmlSerializer xmldes = new XmlSerializer(type);
            return xmldes.Deserialize(stream);
        }

        #endregion 反序列化
    }

五、AutoUpdaterTest

5.1、实体类

作用：本地配置AutoUpdateConfig.xml文件的序列化及反序列化实体对象。

    public class AutoUpdateConfig
    {
        /// <summary>
        /// 自动升级模式：当前仅支持HTTP
        /// </summary>
        public string AutoUpdateMode { get; set; }

        /// <summary>
        /// HTTP自动升级模式时的URL地址
        /// </summary>
        public string AutoUpdateHttpUrl { get; set; }
    }

5.2、通用类

作用：应用程序全局静态常量。全局参数都在此设置，方便统一管理。注：客户端是否检测更新，也是在此设置默认值。

    /// <summary>
    /// 应用程序全局静态常量
    /// </summary>
    public static class GlobalParam
    {
        #region 自动更新参数
        /// <summary>
        /// 是否检查自动更新：默认是true
        /// </summary>
        public static string CheckAutoUpdate = "true";

        /// <summary>
        /// 本地自动更新配置XML文件名
        /// </summary>
        public const string AutoUpdateConfig_XmlFileName = "AutoUpdateConfig.xml";

        /// <summary>
        /// 本地自动更新下载临时存放目录
        /// </summary>
        public const string TempDir = "Temp";

        /// <summary>
        /// 远端自动更新信息XML文件名
        /// </summary>
        public const string AutoUpdateInfo_XmlFileName = "AutoUpdateInfo.xml";

        /// <summary>
        /// 远端自动更新文件存放目录
        /// </summary>
        public const string RemoteDir = "AutoUpdateFiles";

        /// <summary>
        /// 主线程名
        /// </summary>
        public const string MainProcess = "AutoUpdaterTest";
        #endregion
    }

作用：应用程序上下文。

    /// <summary>
    /// 应用程序上下文
    /// </summary>
    public class AppContext
    {
        /// <summary>
        /// 客户端配置文件
        /// </summary>
        public static AutoUpdateConfig AutoUpdateConfigData { get; set; }
    }

作用：应用程序配置。

    public class AppConfig
    {
        private static readonly object _lock = new object();
        private static AppConfig _instance = null;

        #region 自动更新配置
        /// <summary>
        /// 自动更新配置数据
        /// </summary>
        public AutoUpdateConfig AutoUpdateConfigData { get; set; }

        private AppConfig()
        {
            AutoUpdateConfigData = new AutoUpdateConfig();
        }

        public static AppConfig Instance
        {
            get
            {
                if (_instance == null)
                {
                    lock (_lock)
                    {
                        if (_instance == null)
                        {
                            _instance = new AppConfig();
                        }
                    }
                }
                return _instance;
            }
        }

        /// <summary>
        /// 本地自动更新下载临时文件夹路径
        /// </summary>
        public string TempPath
        {
            get
            {
                return string.Format("{0}\\{1}", Application.StartupPath, GlobalParam.TempDir);
            }
        }

        /// <summary>
        /// 初始化系统配置信息
        /// </summary>
        public void InitialSystemConfig()
        {
            AutoUpdateConfigData.AutoUpdateMode = AppContext.AutoUpdateConfigData.AutoUpdateMode;
            AutoUpdateConfigData.AutoUpdateHttpUrl = AppContext.AutoUpdateConfigData.AutoUpdateHttpUrl;
        }
        #endregion
    }

5.3、本地配置文件

作用：配置自动更新模式及相关。

注1：复制到输出目录选择始终复制。

注2：主程序运行时，先读取此配置更新文件，然后给AppContext上下文赋值，接着给AppConfig配置赋值。

<?xml version="1.0" encoding="utf-8" ?>
<AutoUpdateConfig>
  <!--自动升级模式：当前仅支持HTTP-->
  <AutoUpdateMode>HTTP</AutoUpdateMode>
  <!--HTTP自动升级模式时的URL地址-->
  <AutoUpdateHttpUrl>http://127.0.0.1:6600/AutoUpdateDir</AutoUpdateHttpUrl>
</AutoUpdateConfig>

5.4、主程序

新建一个Windows 窗体MainForm，此处理仅需要一个空白窗体即可，作测试用。

    public partial class MainForm : Form
    {
        private static MainForm _Instance;

        /// <summary>
        /// MainForm主窗体实例
        /// </summary>
        public static MainForm Instance
        {
            get
            {
                if (_Instance == null)
                {
                    _Instance = new MainForm();
                }
                return _Instance;
            }
        }

        public MainForm()
        {
            InitializeComponent();
        }
    }

5.5、应用程序主入口点

作用：检测应用程序是否需要自动更新，如里需要则检测远程服务端的版本号。假如远程服务端有新版本，则调用自动更新器AutoUpdater并向其传递4个参数。

    internal static class Program
    {
        /// <summary>
        /// 应用程序的主入口点
        /// </summary>
        [STAThread]
        private static void Main(string[] args)
        {
            //尝试设置访问权限
            FileUtility.AddSecurityControll2Folder("Users", Application.StartupPath);

            //未捕获的异常处理
            Application.ThreadException += Application_ThreadException;
            Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
            AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;

            //是否检查自动更新赋值
            if (args.Length > 0)
            {
                GlobalParam.CheckAutoUpdate = args[0];
            }

            //加载自动更新配置文件，给上下文AppServiceConfig对象赋值。
            var config = AutoUpdateHelper.Load();
            AppContext.AutoUpdateConfigData = config;

            //窗体互斥体
            var instance = new Mutex(true, GlobalParam.MainProcess, out bool isNewInstance);
            if (isNewInstance == true)
            {
                if (GlobalParam.CheckAutoUpdate.ToBoolean())
                {
                    if (CheckUpdater())
                        ProcessUtility.KillProcess(GlobalParam.MainProcess);
                }
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(MainForm.Instance);
                instance.ReleaseMutex();
            }
            else
            {
                MessageBox.Show("已经启动了一个程序，请先退出。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                Application.Exit();
            }
        }

        /// <summary>
        /// 自动更新检测
        /// </summary>
        /// <returns></returns>
        private static bool CheckUpdater()
        {
            if (GlobalParam.CheckAutoUpdate.ToBoolean() == false) return false;

            #region 检查版本更新
            Stopwatch stopwatch = new Stopwatch();
            stopwatch.Start();

            bool blFinish = false;
            AppConfig.Instance.InitialSystemConfig();
            var helper = new AutoUpdateHelper(AppConfig.Instance.AutoUpdateConfigData.AutoUpdateMode);
            string fileVersion = FileVersionInfo.GetVersionInfo(Application.ExecutablePath).FileVersion;

            long localVersion = 0;
            long remoteVersion = 0;
            try
            {
                localVersion = fileVersion.Replace(".", "").ToLong();
                remoteVersion = helper.GetRemoteAutoUpdateInfoVersion().Replace(".", "").ToLong();

                if ((localVersion > 0) && (localVersion < remoteVersion))
                {
                    blFinish = true;
                    string autoUpdateConfigXmlPath = helper.WriteLocalAutoUpdateInfoXml();
                    string autoUpdateInfoXmlPath = Path.Combine(AppConfig.Instance.TempPath, GlobalParam.AutoUpdateInfo_XmlFileName);
                    string argument1 = autoUpdateConfigXmlPath;
                    string argument2 = autoUpdateInfoXmlPath;
                    string argument3 = GlobalParam.MainProcess;
                    string argument4 = GlobalParam.RemoteDir;
                    string arguments = argument1 + " " + argument2 + " " + argument3 + " " + argument4;
                    Process.Start("AutoUpdater.exe", arguments);
                    Application.Exit();
                }
            }
            catch (TimeoutException)
            {
                blFinish = false;
            }
            catch (WebException)
            {
                blFinish = false;
            }
            catch (Exception)
            {
                blFinish = false;
            }
            
            return blFinish;
            #endregion
        }

        /// <summary>
        /// UI线程未捕获异常处理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
        {
            string strError = "", strLog = "", strDateInfo = DateTime.Now.ToString() + " 出现应用程序未处理的异常：\r\n";
            var error = e.Exception;

            if (error != null)
            {
                strError = strDateInfo + $"异常类型：{error.GetType().Name}\r\n异常消息：{error.Message}";
                strLog = strDateInfo + $"异常类型：{error.GetType().Name}\r\n异常消息：{error.Message}\r\n堆栈信息：{error.StackTrace}\r\n来源信息：{error.Source}\r\n";
            }
            else
            {
                strError = $"Application ThreadException：{e}";
            }

            WriteLog(strLog);
            MessageBox.Show(strError, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

        /// <summary>
        /// 非UI线程未捕获异常处理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            string strError = "", strLog = "", strDateInfo = DateTime.Now.ToString() + " 出现应用程序未处理的异常：\r\n";

            if (e.ExceptionObject is Exception error)
            {
                strError = strDateInfo + $"异常消息：{error.Message}";
                strLog = strDateInfo + $"异常消息：{error.Message}\r\n堆栈信息：{error.StackTrace}";
            }
            else
            {
                strError = $"Application UnhandledError：{e}";
            }

            WriteLog(strLog);
            MessageBox.Show(strError, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

        /// <summary>
        /// 写入日志
        /// </summary>
        /// <param name="strLog"></param>
        private static void WriteLog(string strLog)
        {
            string dirPath = @"Log\MainProcess", fileName = DateTime.Now.ToString("yyyy-MM-dd") + ".txt";
            string strLine = "----------------------------------------------------------------------------------------------------";

            FileUtility.WriteFile(Path.Combine(dirPath, fileName), strLog);
            FileUtility.WriteFile(Path.Combine(dirPath,fileName), strLine);
        }
    }

六、AutoUpdater

6.1、实体类

作用：配置自动更新模式及相关。

    /// <summary>
    /// 自动更新配置信息
    /// </summary>
    public class AutoUpdateConfig
    {
        /// <summary>
        /// 自动升级模式：当前仅支持HTTP
        /// </summary>
        public string AutoUpdateMode { get; set; }

        /// <summary>
        /// HTTP自动升级模式时的URL地址
        /// </summary>
        public string AutoUpdateHttpUrl { get; set; }
    }

作用：自动更新内容信息。

    /// <summary>
    /// 自动更新内容信息
    /// </summary>
    [Serializable]
    public class AutoUpdateInfo
    {
        /// <summary>
        /// 新版本号
        /// </summary>
        public string NewVersion { get; set; }

        /// <summary>
        /// 更新日期
        /// </summary>
        public string UpdateTime { get; set; }

        /// <summary>
        /// 更新内容说明
        /// </summary>
        public string UpdateContent { get; set; }

        /// <summary>
        /// 更新文件列表
        /// </summary>
        public List<string> FileList { get; set; }
    }

6.2、通用类

作用：应用程序全局静态常量。全局参数都在此设置，方便统一管理。

    /// <summary>
    /// 应用程序全局静态常量
    /// </summary>
    public static class GlobalParam
    {
        /// <summary>
        /// 调用程序主线程名称
        /// </summary>
        public static string MainProcess = string.Empty;

        /// <summary>
        /// 远程更新程序所在文件夹的名称
        /// </summary>
        public static string RemoteDir = string.Empty;
    }

6.3、Window 窗体

新建一个Windows 窗体HttpStartUp。

    public partial class HttpStartUp : Form
    {
        private bool _blSuccess = false;
        private string _autoUpdateHttpUrl = null;
        private AutoUpdateInfo _autoUpdateInfo = null;

        public HttpStartUp(string autoUpdateHttpUrl, AutoUpdateInfo autoUpdateInfo)
        {
            InitializeComponent();
            _autoUpdateHttpUrl = autoUpdateHttpUrl;
            _autoUpdateInfo = autoUpdateInfo;
            _blSuccess = false;
        }

        /// <summary>
        /// 窗体加载事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Main_Load(object sender, EventArgs e)
        {
            Text = GlobalParam.MainProcess + "-更新程序";
            lblUpdateTime.Text = _autoUpdateInfo.UpdateTime;
            lblNewVersion.Text = _autoUpdateInfo.NewVersion;
            txtUpdate.Text = _autoUpdateInfo.UpdateContent;
        }

        /// <summary>
        /// 立即更新
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnRun_Click(object sender, EventArgs e)
        {
            ProcessUtility.KillProcess(GlobalParam.MainProcess);
            btnRun.Enabled = false;
            btnLeave.Enabled = false;
            
            Thread thread = new Thread(() =>
            {
                try
                {
                    var downFileList = _autoUpdateInfo.FileList.OrderByDescending(s => s.IndexOf("\\"));
                    foreach (var fileName in downFileList)
                    {
                        string fileUrl = string.Empty, fileVaildPath = string.Empty;
                        if (fileName.StartsWith("\\"))
                        {
                            fileVaildPath = fileName.Substring(fileName.IndexOf("\\"));
                        }
                        else
                        {
                            fileVaildPath = fileName;
                        }
                        fileUrl = _autoUpdateHttpUrl.TrimEnd(new char[] { '/' }) + @"/" + GlobalParam.RemoteDir + @"/" + fileVaildPath.Replace("\\", "/");    //替换文件目录中的路径为网络路径
                        DownloadFileDetail(fileUrl, fileName);
                    }
                    _blSuccess = true;
                }
                catch (Exception ex)
                {
                    BeginInvoke(new MethodInvoker(() =>
                    {
                        throw ex;
                    }));
                }
                finally
                {
                    BeginInvoke(new MethodInvoker(delegate ()
                    {
                        btnRun.Enabled = true;
                        btnLeave.Enabled = true;
                    }));
                }
                if (_blSuccess)
                {
                    Process.Start(GlobalParam.MainProcess + ".exe");
                    BeginInvoke(new MethodInvoker(delegate ()
                    {
                        Close();
                        Application.Exit();
                    }));
                }
            })
            {
                IsBackground = true
            };
            thread.Start();
        }

        private void DownloadFileDetail(string httpUrl, string filename)
        {
            string fileName = Application.StartupPath + "\\" + filename;
            string dirPath = GetDirPath(fileName);
            if (!Directory.Exists(dirPath))
            {
                Directory.CreateDirectory(dirPath);
            }
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(httpUrl);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream httpStream = response.GetResponseStream();
            long totalBytes = response.ContentLength;
            if (progressBar != null)
            {
                BeginInvoke(new MethodInvoker(delegate ()
                {
                    lblDownInfo.Text = "开始下载...";
                    progressBar.Maximum = (int)totalBytes;
                    progressBar.Minimum = 0;
                }));
            }
            FileStream outputStream = new FileStream(fileName, FileMode.Create);
            int bufferSize = 2048;
            int readCount;
            byte[] buffer = new byte[bufferSize];
            readCount = httpStream.Read(buffer, 0, bufferSize);
            int allByte = (int)response.ContentLength;
            int startByte = 0;
            BeginInvoke(new MethodInvoker(delegate ()
            {
                progressBar.Maximum = allByte;
                progressBar.Minimum = 0;
            }));
            while (readCount > 0)
            {
                outputStream.Write(buffer, 0, readCount);
                readCount = httpStream.Read(buffer, 0, bufferSize);
                startByte += readCount;
                BeginInvoke(new MethodInvoker(delegate ()
                {
                    lblDownInfo.Text = "已下载：" + startByte / 1024 + "KB/" + "总长度："+ allByte / 1024 + "KB" + " " + " 文件名：" + filename;         
                    progressBar.Value = startByte;
                }));
                Application.DoEvents();
                Thread.Sleep(5);
            }
            BeginInvoke(new MethodInvoker(delegate ()
            {
                lblDownInfo.Text = "下载完成。";
            }));
            httpStream.Close();
            outputStream.Close();
            response.Close();
        }

        public static string GetDirPath(string filePath)
        {
            if (filePath.LastIndexOf("\\") > 0)
            {
                return filePath.Substring(0, filePath.LastIndexOf("\\"));
            }
            return filePath;
        }

        /// <summary>
        /// 暂不更新
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnLeave_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("确定要放弃此次更新吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                Process.Start(GlobalParam.MainProcess + ".exe", "false");
                Close();
                Application.Exit();
            }
        }      
    }

七、AutoUpdateXmlBuilder

7.1、实体类

作用：自动更新内容信息。

    /// <summary>
    /// 自动更新内容信息
    /// </summary>
    [Serializable]
    public class AutoUpdateInfo
    {
        /// <summary>
        /// 新版本号
        /// </summary>
        public string NewVersion { get; set; }

        /// <summary>
        /// 更新日期
        /// </summary>
        public string UpdateTime { get; set; }

        /// <summary>
        /// 更新内容说明
        /// </summary>
        public string UpdateContent { get; set; }

        /// <summary>
        /// 更新文件列表
        /// </summary>
        public List<string> FileList { get; set; }
    }

7.2、通用类

作用：应用程序全局静态常量。全局参数都在此设置，方便统一管理。

    /// <summary>
    /// 应用程序全局静态常量
    /// </summary>
    public static class GlobalParam
    {
        /// <summary>
        /// 远端自动更新信息XML文件名
        /// </summary>
        public const string AutoUpdateInfo_XmlFileName = "AutoUpdateInfo.xml";

        /// <summary>
        /// 远端自动更新目录
        /// </summary>
        public const string AutoUpdateDir = "AutoUpdateDir";

        /// <summary>
        /// 远端自动更新文件存放目录
        /// </summary>
        public const string RemoteDir = "AutoUpdateFiles";

        /// <summary>
        /// 主线程名
        /// </summary>
        public const string MainProcess = "AutoUpdaterTest";
    }

7.3、Window 窗体

1）新建一个Windows 窗体Main。

    public partial class Main : Form
    {
        //自动更新目录路径
        private static readonly string AutoUpdateDirPath = Application.StartupPath + @"\" + GlobalParam.AutoUpdateDir;
        //自动更新信息XML文件路径
        private static readonly string AutoUpdateInfoXmlPath = Path.Combine(AutoUpdateDirPath, GlobalParam.AutoUpdateInfo_XmlFileName);
        //自动更新文件目录路径
        private static readonly string RemoteDirPath = Application.StartupPath + @"\" + GlobalParam.AutoUpdateDir + @"\" + GlobalParam.RemoteDir;

        public Main()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 窗体加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Main_Load(object sender, EventArgs e)
        {
            if (!Directory.Exists(RemoteDirPath))
            {
                Directory.CreateDirectory(RemoteDirPath);
            }
            LoadBaseInfo();
            LoadDirectoryFileList();
        }

        /// <summary>
        /// 刷新
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnRefresh_Click(object sender, EventArgs e)
        {
            LoadBaseInfo();
            LoadDirectoryFileList();
        }

        /// <summary>
        /// 初始化
        /// </summary>
        private void LoadBaseInfo()
        {
            dtUpdateTime.Text = DateTime.Now.ToString("yyyy-MM-dd");
            txtNewVersion.Text = GetMainProcessFileVersion();
            CreateHeaderAndFillListView();
        }

        /// <summary>
        /// 获取主程序文件版本
        /// </summary>
        /// <returns></returns>
        private string GetMainProcessFileVersion()
        {
            string fileVersion = "";
            if (File.Exists(RemoteDirPath + "\\" + GlobalParam.MainProcess + ".exe"))   //如果更新中有主程序文件
            {
                FileVersionInfo info = FileVersionInfo.GetVersionInfo(RemoteDirPath + "\\" + GlobalParam.MainProcess + ".exe");
                fileVersion = info.FileVersion;
            }
            return fileVersion;
        }

        /// <summary>
        /// 添加ListView列名
        /// </summary>
        private void CreateHeaderAndFillListView()
        {
            lstFileList.Columns.Clear();
            int lvWithd = lstFileList.Width;
            ColumnHeader columnHeader;

            //First Header
            columnHeader = new ColumnHeader
            {
                Text = "#",
                Width = 38
            };
            lstFileList.Columns.Add(columnHeader);

            //Second Header
            columnHeader = new ColumnHeader
            {
                Text = "文件名",
                Width = (lvWithd - 38) / 2
            };
            lstFileList.Columns.Add(columnHeader);

            //Third Header
            columnHeader = new ColumnHeader
            {
                Text = "更新路径",
                Width = (lvWithd - 38) / 2
            };
            lstFileList.Columns.Add(columnHeader);
        }

        /// <summary>
        /// 加载目录文件列表
        /// </summary>
        private void LoadDirectoryFileList()
        {
            if (!Directory.Exists(RemoteDirPath))
            {
                Directory.CreateDirectory(RemoteDirPath);
            }
            FileHelper fileHelper = new FileHelper(RemoteDirPath);
            var fileArrary = fileHelper.GetUpdateList(fileHelper.GetAllFilesInDirectory(RemoteDirPath)).ToList();
            var lastFile = fileArrary.FirstOrDefault(s => s == GlobalParam.MainProcess + ".exe");
            //exe作为最后的文件更新，防止更新过程中出现网络错误，导致文件未全部更新。
            if (lastFile != null)
            {
                fileArrary.Remove(lastFile);
                fileArrary.Add(lastFile);
            }
            PopulateListViewWithArray(fileArrary.ToArray());
        }

        /// <summary>
        /// 使用路径字符数组填充列表
        /// </summary>
        /// <param name="strArray"></param>
        private void PopulateListViewWithArray(string[] strArray)
        {
            lstFileList.Items.Clear();
            if (strArray != null)
            {
                //只过滤根目录下的特殊文件
                strArray = strArray.Where(s => !new string[] { GlobalParam.AutoUpdateInfo_XmlFileName }.Contains(s.Substring(s.IndexOf('\\') + 1))).ToArray();
                for (int i = 0; i < strArray.Length; i++)
                {
                    ListViewItem lvi = new ListViewItem
                    {
                        Text = (i + 1).ToString()
                    };
                    int intStart = strArray[i].LastIndexOf('\\') + 1;
                    lvi.SubItems.Add(strArray[i].Substring(intStart, strArray[i].Length - intStart));
                    lvi.SubItems.Add(strArray[i]);
                    lstFileList.Items.Add(lvi);
                }
            }
        }

        /// <summary>
        /// 生成更新XML文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnBuild_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(txtNewVersion.Text))
            {
                MessageBox.Show("更新版本号不能为空。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                txtNewVersion.Focus();
                return;
            }

            if (string.IsNullOrEmpty(txtMainProcessName.Text))
            {
                MessageBox.Show("主进程名不能为空。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                txtMainProcessName.Focus();
                return;
            }

            AutoUpdateInfo info = new AutoUpdateInfo()
            {
                NewVersion = txtNewVersion.Text.Trim(),
                UpdateTime = dtUpdateTime.Value.ToString("yyyy-MM-dd"),
                UpdateContent = txtUpdateContent.Text,
                FileList = lstFileList.Items.Cast<ListViewItem>().Select(s => s.SubItems[2].Text).ToList()
            };

            string xmlValue = XmlUtility.Serializer(typeof(AutoUpdateInfo), info);
            using (StreamWriter sw = new StreamWriter(AutoUpdateInfoXmlPath))
            {
                sw.WriteLine(xmlValue);
                sw.Flush();
                sw.Close();
            }
            MessageBox.Show("生成成功。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        /// <summary>
        /// 打开本地目录
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnOpen_Click(object sender, EventArgs e)
        {
            ProcessStartInfo psi = new ProcessStartInfo("Explorer.exe")
            {
                Arguments = AutoUpdateDirPath
            };
            Process.Start(psi);
        }
    }

2）在bin\Debug\下新建一个AutoUpdateDir文件夹，然后再在AutoUpdateDir下新建一个AutoUpdateFiles文件夹。

3）在AutoUpdaterTest中，将程序集版本及文件版本都改成1.0.0.1并重新生成，接着将AutoUpdaterTest.exe拷贝到AutoUpdateFiles下，最后将程序集版本及文件版本都改回1.0.0.0。

4）此时运行AutoUpdateXmlBuilder，点击生成更新XML文件即打包成功。程序会自动在AutoUpdateDir下生成打包信息文件AutoUpdateInfo.xml。

八、远程服务端配置

注：此处为本机测试。

1）在某个盘符如E盘下新建一个AutoUpdate文件夹，将AutoUpdateXmlBuilder打包文件夹AutoUpdateDir拷贝到AutoUpdate文件夹下。

2）在IIS中新建一个网站，对应的虚拟目录为E:\AutoUpdate，同时将端口设置为6600。

3）运行AutoUpdaterTest，如出现自动更新器即代表成功。