C# winfrom桌面应用实现自动更新

实现方式/思路：FTP文件(应用程序包)下载，解压

帮助类：

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;

namespace AutoUpdate.Helper
{
    public class ProcessHelper
    {
        private static ProcessHelper instance;
        public static ProcessHelper Instance
        {
            get
            {
                if (instance == null) instance = new ProcessHelper();
                return ProcessHelper.instance;
            }
        }

        /// <summary>
        /// 关闭进程
        /// </summary>
        /// <param name="processName">进程名</param>
        public void KillProcessByName(string processName)
        {
            try
            {
                Process[] myproc = Process.GetProcesses();
                foreach (Process item in myproc)
                {
                    if (item.ProcessName == processName)
                    {
                        item.CloseMainWindow();
                        item.Kill();
                    }
                }
            }
            catch { return; }
        }

        /// <summary>
        /// 启动进程
        /// </summary>
        /// <param name="processName">进程名,完全限定名</param>
        public void StartProcessByName(string processName)
        {
            System.Diagnostics.Process.Start(processName);
            //Process process = new Process();//声明一个进程类对象
            //process.StartInfo.FileName = processName;//Application.StartupPath + "\AutoUpdate.exe";
            //process.Start();
        }

        public void StartProcessByName(string processName,string param)
        {
            //System.Diagnostics.Process.Start(processName);
            Process p = new Process();//声明一个进程类对象
            p.StartInfo.FileName = processName;// Application.StartupPath + "\AutoUpdate.exe";
            p.StartInfo.UseShellExecute = true;
            p.StartInfo.Arguments = param;
            p.Start();
        }


    }
}

using System;
using System.IO;
using System.Diagnostics;
using Microsoft.Win32;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;

namespace AutoUpdate.Helper
{
    public class SharpZip
    {
        public SharpZip()
        { }

        /// <summary>
        /// 压缩
        /// </summary> 
        /// <param name="filename"> 压缩后的文件名(包含物理路径)</param>
        /// <param name="directory">待压缩的文件夹(包含物理路径)</param>
        public static void PackFiles(string filename, string directory)
        {
            try
            {
                FastZip fz = new FastZip();
                fz.CreateEmptyDirectories = true;
                fz.CreateZip(filename, directory, true, "");
                fz = null;
            }
            catch (Exception)
            {
                throw;
            }
        }

        /// <summary>
        /// 解压缩
        /// </summary>
        /// <param name="file">待解压文件名(包含物理路径)</param>
        /// <param name="targetdir"> 解压到哪个目录中(包含物理路径)</param>
        public static bool UnpackFiles(string file, string targetdir)
        {
            try
            {
                if (!Directory.Exists(targetdir))
                {
                    Directory.CreateDirectory(targetdir);
                }
                ZipInputStream s = new ZipInputStream(File.OpenRead(file));
                ZipEntry theEntry;
                while ((theEntry = s.GetNextEntry()) != null)
                {
                    string directoryName = Path.GetDirectoryName(theEntry.Name);
                    string fileName = Path.GetFileName(theEntry.Name);
                    if (directoryName != String.Empty)
                    {
                        Directory.CreateDirectory(targetdir + directoryName);
                    }
                    if (fileName != String.Empty)
                    {
                        //FileStream streamWriter = File.Create(targetdir + theEntry.Name);
                        FileStream streamWriter = File.Create(theEntry.Name);
                        int size = 2048;
                        byte[] data = new byte[2048];
                        while (true)
                        {
                            size = s.Read(data, 0, data.Length);
                            if (size > 0)
                            {
                                streamWriter.Write(data, 0, size);
                            }
                            else
                            {
                                break;
                            }
                        }
                        streamWriter.Close();
                    }
                }
                s.Close();
                return true;
            }
            catch (Exception)
            {
                throw;
            }
        }
    }

    public class ClassZip
    {
        #region 私有方法
        /// <summary>
        /// 递归压缩文件夹方法
        /// </summary>
        private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
        {
            bool res = true;
            string[] folders, filenames;
            ZipEntry entry = null;
            FileStream fs = null;
            Crc32 crc = new Crc32();
            try
            {
                entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/"));
                s.PutNextEntry(entry);
                s.Flush();
                filenames = Directory.GetFiles(FolderToZip);
                foreach (string file in filenames)
                {
                    fs = File.OpenRead(file);
                    byte[] buffer = new byte[fs.Length];
                    fs.Read(buffer, 0, buffer.Length);
                    entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
                    entry.DateTime = DateTime.Now;
                    entry.Size = fs.Length;
                    fs.Close();
                    crc.Reset();
                    crc.Update(buffer);
                    entry.Crc = crc.Value;
                    s.PutNextEntry(entry);
                    s.Write(buffer, 0, buffer.Length);
                }
            }
            catch
            {
                res = false;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                    fs = null;
                }
                if (entry != null)
                {
                    entry = null;
                }
                GC.Collect();
                GC.Collect(1);
            }
            folders = Directory.GetDirectories(FolderToZip);
            foreach (string folder in folders)
            {
                if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
                {
                    return false;
                }
            }
            return res;
        }

        /// <summary>
        /// 压缩目录
        /// </summary>
        /// <param name="FolderToZip">待压缩的文件夹，全路径格式</param>
        /// <param name="ZipedFile">压缩后的文件名，全路径格式</param>
        private static bool ZipFileDictory(string FolderToZip, string ZipedFile, int level)
        {
            bool res;
            if (!Directory.Exists(FolderToZip))
            {
                return false;
            }
            ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
            s.SetLevel(level);
            res = ZipFileDictory(FolderToZip, s, "");
            s.Finish();
            s.Close();
            return res;
        }

        /// <summary>
        /// 压缩文件
        /// </summary>
        /// <param name="FileToZip">要进行压缩的文件名</param>
        /// <param name="ZipedFile">压缩后生成的压缩文件名</param>
        private static bool ZipFile(string FileToZip, string ZipedFile, int level)
        {
            if (!File.Exists(FileToZip))
            {
                throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
            }
            FileStream ZipFile = null;
            ZipOutputStream ZipStream = null;
            ZipEntry ZipEntry = null;
            bool res = true;
            try
            {
                ZipFile = File.OpenRead(FileToZip);
                byte[] buffer = new byte[ZipFile.Length];
                ZipFile.Read(buffer, 0, buffer.Length);
                ZipFile.Close();

                ZipFile = File.Create(ZipedFile);
                ZipStream = new ZipOutputStream(ZipFile);
                ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
                ZipStream.PutNextEntry(ZipEntry);
                ZipStream.SetLevel(level);

                ZipStream.Write(buffer, 0, buffer.Length);
            }
            catch
            {
                res = false;
            }
            finally
            {
                if (ZipEntry != null)
                {
                    ZipEntry = null;
                }
                if (ZipStream != null)
                {
                    ZipStream.Finish();
                    ZipStream.Close();
                }
                if (ZipFile != null)
                {
                    ZipFile.Close();
                    ZipFile = null;
                }
                GC.Collect();
                GC.Collect(1);
            }
            return res;
        }
        #endregion

        /// <summary>
        /// 压缩
        /// </summary>
        /// <param name="FileToZip">待压缩的文件目录</param>
        /// <param name="ZipedFile">生成的目标文件</param>
        /// <param name="level">6</param>
        public static bool Zip(String FileToZip, String ZipedFile, int level)
        {
            if (Directory.Exists(FileToZip))
            {
                return ZipFileDictory(FileToZip, ZipedFile, level);
            }
            else if (File.Exists(FileToZip))
            {
                return ZipFile(FileToZip, ZipedFile, level);
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// 解压
        /// </summary>
        /// <param name="FileToUpZip">待解压的文件</param>
        /// <param name="ZipedFolder">解压目标存放目录</param>
        public static void UnZip(string FileToUpZip, string ZipedFolder)
        {
            if (!File.Exists(FileToUpZip))
            {
                return;
            }
            if (!Directory.Exists(ZipedFolder))
            {
                Directory.CreateDirectory(ZipedFolder);
            }
            ZipInputStream s = null;
            ZipEntry theEntry = null;
            string fileName;
            FileStream streamWriter = null;
            try
            {
                s = new ZipInputStream(File.OpenRead(FileToUpZip));
                while ((theEntry = s.GetNextEntry()) != null)
                {
                    if (theEntry.Name != String.Empty)
                    {
                        fileName = Path.Combine(ZipedFolder, theEntry.Name);
                        if (fileName.EndsWith("/") || fileName.EndsWith("\"))
                        {
                            Directory.CreateDirectory(fileName);
                            continue;
                        }
                        streamWriter = File.Create(fileName);
                        int size = 2048;
                        byte[] data = new byte[2048];
                        while (true)
                        {
                            size = s.Read(data, 0, data.Length);
                            if (size > 0)
                            {
                                streamWriter.Write(data, 0, size);
                            }
                            else
                            {
                                break;
                            }
                        }
                    }
                }
            }
            finally
            {
                if (streamWriter != null)
                {
                    streamWriter.Close();
                    streamWriter = null;
                }
                if (theEntry != null)
                {
                    theEntry = null;
                }
                if (s != null)
                {
                    s.Close();
                    s = null;
                }
                GC.Collect();
                GC.Collect(1);
            }
        }
    }

    public class ZipHelper
    {
        #region 私有变量
        String the_rar;
        RegistryKey the_Reg;
        Object the_Obj;
        String the_Info;
        ProcessStartInfo the_StartInfo;
        Process the_Process;
        #endregion

        /// <summary>
        /// 压缩
        /// </summary>
        /// <param name="zipname">要解压的文件名</param>
        /// <param name="zippath">要压缩的文件目录</param>
        /// <param name="dirpath">初始目录</param>
        public void EnZip(string zipname, string zippath, string dirpath)
        {
            try
            {
                the_Reg = Registry.ClassesRoot.OpenSubKey(@"ApplicationsWinRAR.exeShellOpenCommand");
                the_Obj = the_Reg.GetValue("");
                the_rar = the_Obj.ToString();
                the_Reg.Close();
                the_rar = the_rar.Substring(1, the_rar.Length - 7);
                the_Info = " a    " + zipname + "  " + zippath;
                the_StartInfo = new ProcessStartInfo();
                the_StartInfo.FileName = the_rar;
                the_StartInfo.Arguments = the_Info;
                the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                the_StartInfo.WorkingDirectory = dirpath;
                the_Process = new Process();
                the_Process.StartInfo = the_StartInfo;
                the_Process.Start();
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        /// <summary>
        /// 解压缩
        /// </summary>
        /// <param name="zipname">要解压的文件名</param>
        /// <param name="zippath">要解压的文件路径</param>
        public void DeZip(string zipname, string zippath)
        {
            try
            {
                the_Reg = Registry.ClassesRoot.OpenSubKey(@"ApplicationsWinRar.exeShellOpenCommand");
                the_Obj = the_Reg.GetValue("");
                the_rar = the_Obj.ToString();
                the_Reg.Close();
                the_rar = the_rar.Substring(1, the_rar.Length - 7);
                the_Info = " X " + zipname + " " + zippath;
                the_StartInfo = new ProcessStartInfo();
                the_StartInfo.FileName = the_rar;
                the_StartInfo.Arguments = the_Info;
                the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                the_Process = new Process();
                the_Process.StartInfo = the_StartInfo;
                the_Process.Start();
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }
    }

}


using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Net;
using System.Text;
using System.Windows.Forms;

namespace AutoUpdate.Helper
{
    public class UpdateHelper
    {
        private static UpdateHelper instance;
        public static UpdateHelper Instance
        {
            get
            {
                if (instance == null) instance = new UpdateHelper();
                return UpdateHelper.instance;
            }
        }

        //基本设置
        private string FTPFilePath = @"ftp://" + ConfigurationManager.AppSettings["FTPFilePath"];    //目标路径
        private string FtpServerPort = ConfigurationManager.AppSettings["FtpServerPort"];    //ftp IP地址
        private string FtpServerIP = ConfigurationManager.AppSettings["FtpServerIP"];    //ftp IP地址
        private string FtpServerUserName = ConfigurationManager.AppSettings["FtpServerUserName"];   //ftp用户名
        private string FtpServerPassword = ConfigurationManager.AppSettings["FtpServerPassword"];   //ftp密码

        //获取ftp上面的文件和文件夹
        public string[] GetFileList(string dir)
        {
            string[] downloadFiles;
            StringBuilder result = new StringBuilder();
            FtpWebRequest request;
            try
            {
                request = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPFilePath));
                request.UseBinary = true;
                request.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);//设置用户名和密码
                request.Method = WebRequestMethods.Ftp.ListDirectory;
                request.UseBinary = true;

                WebResponse response = request.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());
                string line = reader.ReadLine();
                while (line != null)
                {
                    result.Append(line);
                    result.Append("
");
                    Console.WriteLine(line);
                    line = reader.ReadLine();
                }
                // to remove the trailing '
'
                result.Remove(result.ToString().LastIndexOf('
'), 1);
                reader.Close();
                response.Close();
                return result.ToString().Split('
');
            }
            catch (Exception ex)
            {
                Console.WriteLine("获取ftp上面的文件和文件夹：" + ex.Message);
                downloadFiles = null;
                return downloadFiles;
            }
        }

        /// <summary>
        /// 获取文件大小
        /// </summary>
        /// <param name="file">ip服务器下的相对路径</param>
        /// <returns>文件大小</returns>
        public int GetFileSize(string file)
        {
            StringBuilder result = new StringBuilder();
            FtpWebRequest request;
            try
            {
                request = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPFilePath + file));
                request.UseBinary = true;
                request.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);//设置用户名和密码
                request.Method = WebRequestMethods.Ftp.GetFileSize;

                return (int)request.GetResponse().ContentLength;
            }
            catch (Exception ex)
            {
                Console.WriteLine("获取文件大小出错：" + ex.Message);
                return -1;
            }
        }

        /// <summary>
        /// 文件上传
        /// </summary>
        /// <param name="filePath">原路径（绝对路径）包括文件名</param>
        /// <param name="objPath">目标文件夹：服务器下的相对路径 不填为根目录</param>
        public void FileUpLoad(string filePath, string objPath = "")
        {
            try
            {
                string url = FTPFilePath;
                if (objPath != "") url += objPath + "/";
                try
                {

                    FtpWebRequest reqFTP = null;
                    //待上传的文件 （全路径）
                    try
                    {
                        FileInfo fileInfo = new FileInfo(filePath);
                        using (FileStream fs = fileInfo.OpenRead())
                        {
                            long length = fs.Length;
                            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url + fileInfo.Name));
                            //设置连接到FTP的帐号密码
                            reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                            //设置请求完成后是否保持连接
                            reqFTP.KeepAlive = false;
                            //指定执行命令
                            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
                            //指定数据传输类型
                            reqFTP.UseBinary = true;

                            using (Stream stream = reqFTP.GetRequestStream())
                            {
                                //设置缓冲大小
                                int BufferLength = 5120;
                                byte[] b = new byte[BufferLength];
                                int i;
                                while ((i = fs.Read(b, 0, BufferLength)) > 0)
                                {
                                    stream.Write(b, 0, i);
                                }
                                Console.WriteLine("上传文件成功");
                            }
                        }
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine("上传文件失败错误为" + ex.Message);
                    }
                    finally
                    {

                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine("上传文件失败错误为" + ex.Message);
                }
                finally
                {
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("上传文件失败错误为" + ex.Message);
            }
        }

        /// <summary>
        /// 删除文件
        /// </summary>
        /// <param name="fileName">服务器下的相对路径 包括文件名</param>
        public void DeleteFileName(string fileName)
        {
            try
            {
                FileInfo fileInf = new FileInfo(FtpServerIP + "" + fileName);
                string uri = FTPFilePath + fileName;
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
                // 指定数据传输类型
                reqFTP.UseBinary = true;
                // ftp用户名和密码
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                // 默认为true，连接不会被关闭
                // 在一个命令之后被执行
                reqFTP.KeepAlive = false;
                // 指定执行什么命令
                reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                response.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine("删除文件出错：" + ex.Message);
            }
        }

        /// <summary>
        /// 新建目录 上一级必须先存在
        /// </summary>
        /// <param name="dirName">服务器下的相对路径</param>
        public void MakeDir(string dirName)
        {
            try
            {
                string uri = FTPFilePath + dirName;
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
                // 指定数据传输类型
                reqFTP.UseBinary = true;
                // ftp用户名和密码
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                response.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine("创建目录出错：" + ex.Message);
            }
        }

        /// <summary>
        /// 删除目录 上一级必须先存在
        /// </summary>
        /// <param name="dirName">服务器下的相对路径</param>
        public void DelDir(string dirName)
        {
            try
            {
                string uri = FTPFilePath + dirName;
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
                // ftp用户名和密码
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;
                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                response.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine("删除目录出错：" + ex.Message);
            }
        }

        /// <summary>
        /// 从ftp服务器上获得文件夹列表
        /// </summary>
        /// <param name="RequedstPath">服务器下的相对路径</param>
        /// <returns></returns>
        public List<string> GetDirctory(string RequedstPath)
        {
            List<string> strs = new List<string>();
            try
            {
                string uri = FTPFilePath + RequedstPath;   //目标路径 path为服务器地址
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
                // ftp用户名和密码
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
                WebResponse response = reqFTP.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名

                string line = reader.ReadLine();
                while (line != null)
                {
                    if (line.Contains("<DIR>"))
                    {
                        string msg = line.Substring(line.LastIndexOf("<DIR>") + 5).Trim();
                        strs.Add(msg);
                    }
                    line = reader.ReadLine();
                }
                reader.Close();
                response.Close();
                return strs;
            }
            catch (Exception ex)
            {
                Console.WriteLine("获取目录出错：" + ex.Message);
            }
            return strs;
        }

        /// <summary>
        /// 从ftp服务器上获得文件列表
        /// </summary>
        /// <param name="RequedstPath">服务器下的相对路径</param>
        /// <returns></returns>
        public List<string> GetFile(string RequedstPath)
        {
            List<string> strs = new List<string>();
            try
            {
                string uri = FTPFilePath + RequedstPath;   //目标路径 path为服务器地址
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
                // ftp用户名和密码
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
                WebResponse response = reqFTP.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名

                string line = reader.ReadLine();
                while (line != null)
                {
                    if (!line.Contains("<DIR>"))
                    {
                        string msg = line.Substring(39).Trim();
                        strs.Add(msg);
                    }
                    line = reader.ReadLine();
                }
                reader.Close();
                response.Close();
                return strs;
            }
            catch (Exception ex)
            {
                Console.WriteLine("获取文件出错：" + ex.Message);
            }
            return strs;
        }

        /// <summary>
        /// 从ftp服务器上下载文件的功能  
        /// </summary>
        /// <param name="fileName">文件名称</param>
        public void Download(string fileName)
        {
            FtpWebRequest reqFTP;
            try
            {
                string filePath = Application.StartupPath;
                FileStream outputStream = new FileStream(filePath + "\" + fileName, FileMode.Create);
                string str = FTPFilePath + ":" + FtpServerPort + "/" + fileName;
                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(str));
                reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
                reqFTP.UseBinary = true;
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                reqFTP.UsePassive = false;
                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                Stream ftpStream = response.GetResponseStream();
                long cl = response.ContentLength;
                int bufferSize = 2048;
                int readCount;
                byte[] buffer = new byte[bufferSize];
                readCount = ftpStream.Read(buffer, 0, bufferSize);
                while (readCount > 0)
                {
                    outputStream.Write(buffer, 0, readCount);
                    readCount = ftpStream.Read(buffer, 0, bufferSize);
                }
                ftpStream.Close();
                outputStream.Close();
                response.Close();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 解压文件
        /// </summary>
        /// <param name="fileName">文件名</param>
        /// <param name="initPath">路径(不含文件名)</param>
        public void DownloadDir(string fileName,string initPath)
        {
            FtpWebRequest reqFTP;
            try
            {
                string filePath = initPath;// Application.StartupPath;
                FileStream outputStream = new FileStream(filePath + "\" + fileName, FileMode.Create);
                string str = FTPFilePath + ":" + FtpServerPort + "/" + fileName;
                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(str));
                reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
                reqFTP.UseBinary = true;
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                reqFTP.UsePassive = false;
                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                Stream ftpStream = response.GetResponseStream();
                long cl = response.ContentLength;
                int bufferSize = 2048;
                int readCount;
                byte[] buffer = new byte[bufferSize];
                readCount = ftpStream.Read(buffer, 0, bufferSize);
                while (readCount > 0)
                {
                    outputStream.Write(buffer, 0, readCount);
                    readCount = ftpStream.Read(buffer, 0, bufferSize);
                }
                ftpStream.Close();
                outputStream.Close();
                response.Close();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 从ftp服务器上下载文件的功能  
        /// </summary>
        /// <param name="fileName">文件名称</param>
        /// <param name="targetPath">存放目标位置+文件名称</param>
        public void Download(string fileName, string targetPath)
        {
            FtpWebRequest reqFTP;
            try
            {
                string filePath = Application.StartupPath;
                //FileStream outputStream = new FileStream(filePath + "\" + fileName, FileMode.Create);
                FileStream outputStream = new FileStream(targetPath, FileMode.Create);
                string str = FTPFilePath + ":" + FtpServerPort + "/" + fileName;
                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(str));
                reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
                reqFTP.UseBinary = true;
                reqFTP.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                reqFTP.UsePassive = false;
                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                Stream ftpStream = response.GetResponseStream();
                long cl = response.ContentLength;
                int bufferSize = 2048;
                int readCount;
                byte[] buffer = new byte[bufferSize];
                readCount = ftpStream.Read(buffer, 0, bufferSize);
                while (readCount > 0)
                {
                    outputStream.Write(buffer, 0, readCount);
                    readCount = ftpStream.Read(buffer, 0, bufferSize);
                }
                ftpStream.Close();
                outputStream.Close();
                response.Close();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 用FTP方式上传文件
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="uploadUrl"></param>
        /// <param name="msg"></param>
        public void Upload(string fileName, string uploadUrl)
        {
            Stream requestStream = null;
            FileStream fileStream = null;
            FtpWebResponse response = null; try
            {
                FtpWebRequest request = (FtpWebRequest)WebRequest.Create(uploadUrl);
                request.Method = WebRequestMethods.Ftp.UploadFile;
                request.Credentials = new NetworkCredential(FtpServerUserName, FtpServerPassword);
                request.Proxy = null;
                requestStream = request.GetRequestStream();
                fileStream = File.Open(fileName, FileMode.Open);
                byte[] buffer = new byte[1024];
                int bytesRead;
                while (true)
                {
                    bytesRead = fileStream.Read(buffer, 0, buffer.Length);
                    if (bytesRead == 0) break;

                    requestStream.Write(buffer, 0, bytesRead);
                }
                requestStream.Close();
                response = (FtpWebResponse)request.GetResponse();
            }
            catch (UriFormatException ex)
            {

            }
            catch (IOException ex)
            {

            }
            catch (WebException ex)
            {

            }
            finally
            {
                if (response != null) response.Close();
                if (fileStream != null) fileStream.Close();
                if (requestStream != null) requestStream.Close();
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace AutoUpdate.Helper
{
    public class VarHelper
    {
        private static VarHelper instance;
        public static VarHelper Instance
        {
            get
            {
                if (instance == null) instance = new VarHelper();
                return VarHelper.instance;
            }
        }

        //初始路径 + 自动更新程序名称 + 主程序名称 
        //string param = fullPath + ","
        //    + "AutoUpdate\AutoUpdate.exe," //自动更新程序
        //    + "Debug\AutoUpdateApp.exe,"//主程序
        //    + "Debug";//下载包
        /// <summary>
        /// 需要更新的文件夹  初始路径 
        /// </summary>
        public string InitPath = "";
        /// <summary>
        /// 自动更新程序名称 
        /// </summary>
        public string AutoUpdateExe = "";
        /// <summary>
        /// 主程序名称
        /// </summary>
        public string MainExe = "";
        /// <summary>
        /// 下载包
        /// </summary>
        public string DownDir = "";
    }
}

自动更新程序：

using AutoUpdate.Helper;
using System;
using System.Collections.Generic;
using System.IO;
using System.Windows.Forms;
using ZB.QueueSys.Common;

namespace AutoUpdate
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            UpdateApp();
        }

        private void UpdateApp()
        {
            this.probarWatting.Style = ProgressBarStyle.Marquee;
            this.probarWatting.Show();

            try
            {
                #region 注释代码
                //NewMethod();

                //    DirectoryInfo di = new DirectoryInfo(string.Format(@"{0}....", Application.StartupPath));
                //    string fullPath = di.FullName;
                //    string param = fullPath + ","
                //+ "AutoUpdate\AutoUpdate.exe," //自动更新程序
                //+ "Debug\AutoUpdateApp.exe,"//主程序
                //+ "Debug";//下载包

                //    VarHelper.Instance.InitPath = param[0];
                //    VarHelper.Instance.AutoUpdateExe = param[1];
                //    VarHelper.Instance.MainExe = param[2];
                //    VarHelper.Instance.DownDir = param[3];
                #endregion

                string fileZip = VarHelper.Instance.InitPath + VarHelper.Instance.DownDir;//+ "\QueueSys.zip";
                string target = VarHelper.Instance.InitPath + "\" + VarHelper.Instance.DownDir;

                UpdateHelper.Instance.DownloadDir(VarHelper.Instance.DownDir + ".zip", VarHelper.Instance.InitPath);//需要下载的压缩文件名称
                //从那解压到哪
                SharpZip.UnpackFiles(fileZip + ".zip", target);//MessageBox.Show("解压target==" + target);  //ClassZip.UnZip(fileZip + ".zip", target);
                DialogResult result = MessageBox.Show("更新已完成,是否启动预约程序？", "提示",
                    MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
                if (result.Equals(DialogResult.OK))
                {
                    File.Delete(fileZip + ".zip");//MessageBox.Show("开始删除临时压缩文件" + fileZip + ".zip");

                    string mainExe = VarHelper.Instance.InitPath + VarHelper.Instance.MainExe;//"\QueueSys";
                    ProcessHelper.Instance.StartProcessByName(mainExe);                    //MessageBox.Show("启动==" + mainExe);
                    ProcessHelper.Instance.KillProcessByName("AutoUpdate");
                    //System.GC.Collect();//垃圾回收
                }

            }
            catch (Exception ex)
            {
                //MessageBox.Show("删除压缩文件==" + ex.Message + ex.StackTrace);
                MessageBox.Show("更新失败，请联系管理员");
                LogHelper.Instance.SaveText("" + ex.Message + ex.StackTrace);
                return;
            }
        }

        private void NewMethod()
        {
            // 第一步下载需要更新的配置文件
            string filepath = "UpdateList.xml";
            UpdateHelper.Instance.Download(filepath);
            // 第二步 提供并解析配置文件(获取需要更新的文件名称、文件更新后的路径)
            string path = Application.StartupPath + "\UpdateList.xml";
            List<UpdateList> list = AutoUpdate.Helper.XmlHelper.Instance.GetUpdateList(path, "Root");
            //第三步 循环下载文件到指定路径
            foreach (UpdateList item in list)
            {
                if (string.IsNullOrEmpty(item.PATH)) UpdateHelper.Instance.Download(item.NAME);//下载至根目录
                else //下载至指定目录
                {
                    string targetPath = Application.StartupPath + "\" + item.PATH + "\" + item.NAME;
                    UpdateHelper.Instance.Download(item.NAME, targetPath);
                }
            }
        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            DialogResult result = MessageBox.Show("程序正在更新，退出将导致异常", "是否确认退出",
                MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
            if (result.Equals(DialogResult.OK))
            {
                Application.Exit();
            }
        }

        private void buttonTest_Click(object sender, EventArgs e)
        {
            UpdateApp();
        }


    }
}

　

主程序：

　

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AutoUpdateApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            DirectoryInfo info = new DirectoryInfo(Application.StartupPath);
            string path = info.Parent.Parent.FullName;

            DirectoryInfo di = new DirectoryInfo(string.Format(@"{0}....", Application.StartupPath));
            string fullPath = di.FullName;

            //初始路径 + 自动更新程序名称 + 主程序名称 
            string param = fullPath + "," 
                + "AutoUpdate\AutoUpdate.exe," //自动更新程序
                + "Debug\AutoUpdateApp.exe,"//主程序
                + "Debug";//下载包

            //AutoUpdate
            Process p = new Process();//声明一个进程类对象
            p.StartInfo.FileName = fullPath + "AutoUpdate\AutoUpdate.exe";
            p.StartInfo.UseShellExecute = true;
            p.StartInfo.Arguments = param;//第一个参数为需要下载的压缩文件，第二个为需要启动的程序
            p.Start();

            //关闭当期
            //Process[] p_arry = Process.GetProcesses();//得到系统所有进程
            //for (int i = 0; i < p_arry.Length; i++)//遍历每个进程
            //{
            //    if (p_arry[i].ProcessName == "AutoUpdateApp")//发现有名为QQ的进程
            //    {
            //        p_arry[i].Kill();//就结束它。
            //        return;
            //    }
            //}
          
            KillProcessByName("AutoUpdateApp");
            System.GC.Collect();//垃圾回收
        }

        /// <summary>
        /// 关闭进程
        /// </summary>
        /// <param name="processName">进程名</param>
        public void KillProcessByName(string processName)
        {
            try
            {
                Process[] myproc = Process.GetProcesses();
                foreach (Process item in myproc)
                {
                    if (item.ProcessName == processName)
                    {
                        item.CloseMainWindow();
                        item.Kill();
                    }
                }
            }
            catch { return; }
        }

    }
}