Csharp使用FTP实现客户端程序自动更新C#使用FTP实现客户端程序自动更新最近做的一个项目中需要用到客户端自动更新功能，最初的想法是利用ClickOnce技术来完成，但在实践中发现根本行不能，原因如下:1)项目应用到了DevExpress控件包，用ClickOnce发布的自动更新程序，客户在安装时报在GAC中找不到控件dll的错。
2)ClickOnce安装无法实现根据用户安装时录入的参数(比如数据库服务器名、数据库用户名和密码等)来动态修改配置文件的功能。
3)最后一下其实不重要了，就是ClickOnce无法实现用户自定义安装文件夹。
最后决定放弃使用ClickOnce,使用ftp方式进行，实现思路如下:用户启动程序时，先运行update.exe，该文件会自动比较本地配置文件和ftp服务器上配置文件的异同，会自动下载上次更新后变化的文件以及新加入的文件。
(因为都是基本配置文件，所以开发了一个配置文件生成工具，用户只需要选择根目录后，就会自动生成配置文件。
)文件下载结束后，再启动实际的客户端程序。
1using System;2using System.Collections.Generic; 3using System.Diagnostics;4using System.IO;5using ;6using System.Threading;7using System.Windows.Forms;89namespace Update10{11 /**//// <summary>12 /// Description:13 /// Author: ZhangRongHua14 /// Create DateTime: 2009-6-21 12:25 15 /// UpdateHistory:16 /// </summary>17 public partial class frmUpdate : Form 18 {19 Fields#region Fields2021 private const string CONFIGFILE = "update.xml";22 private const string UPDATEDIR = "PMS"; 23 private string appPath = Application.StartupPath;24 private List<ErrorInfo> errorList = new List<ErrorInfo>();25 private string locFile = String.Concat(Application.StartupPath, "\\", CONFIGFILE);26 private string tmpUpdateFile = "TmpUpdate.xml"; 27 privateList<string> updateList;28 private string updateTmpPath = string.Concat(Path.GetTempPath(), "\\",UPDATEDIR);29 private string url = String.Empty; 3031 private FTP ftp = null;3233 #endregion3435 Delegates#region Delegates3637 public delegate void AsycDownLoadFile(string srcFile, string destFile, int i);3839 public delegate void ExecuteUpdateFiles(string srcPath, string destPath);4041 public delegate void UpdateComplete(); 4243 public delegate void UpdateUI(int i, string message); 4445 #endregion4647 public event UpdateComplete OnUpdateComplete; 4849 Constructor#region Constructor5051 public frmUpdate()52 {53 InitializeComponent();54 OnUpdateComplete += newUpdateComplete(frmUpdate_OnUpdateComplete);55 }5657 #endregion5859 Event Handler#region Event Handler 6061 private void frmUpdate_Load(object sender, EventArgs e) 62 {63 if(Directory.Exists(updateTmpPath)) 64 {65 Directory.Delete(updateTmpPath, true); 66 }6768 // 如果有主程序启动，则关闭69 Process[] ps = Process.GetProcesses(); 70 foreach (Process p in ps)71 {72 //MessageBox.Show(p.ProcessName); 73 if (p.ProcessName.ToLower() == "wat.pms.winform")74 {75 p.Kill();76 break;77 }78 }7980 GetUpdateFiles();81 }8283 private void frmUpdate_OnUpdateComplete() 84 {85 ExecuteUpdateFiles dExecuteUpdateFiles = newExecuteUpdateFiles(ExecuteUpdate);86 Invoke(dExecuteUpdateFiles, new object[] {updateTmpPath, appPath});87 }8889 private void frmUpdate_Shown(object sender, EventArgs e)90 {91 Thread updateThread = new Thread(newThreadStart(DownLoadUpdateFiles));92 updateThread.SetApartmentState(ApartmentState.STA);93 updateThread.IsBackground = true; 94 Thread.Sleep(500);95 updateThread.Start();969798 }99100 #endregion101102 Private Methods#region Private Methods 103104 /**//// <summary>105 /// 将目标文件替换为本地文件106 /// <remark>107 /// Author:ZhangRongHua108 /// Create DateTime: 2009-6-21 10:28 109 /// Update History: 110 /// </remark>111 /// </summary>112 /// <param name="srcFile">The SRC file.</param> 113 /// <param name="destFile">The dest file.</param> 114 private voidDownLoadFile(string srcFile, string destFile)115 {116 if(ftp == null )117 {118 ftp = new FTP(Updater.URL, "", er, Updater.Password);119 }120121122123 if(!ftp.Connected)124 {125 MessageBox.Show("无法连接远程服务器，无法更新程序", "提示", MessageBoxButtons.OK, rmation); 126Process.Start(Updater.MainProgram); 127 Close();128129 }130131 // 得到服务器端的配置文件132 ftp.Get(srcFile, updateTmpPath, destFile); 133134135136 }137138 /**//// <summary>139 /// 得到需要更新的文件清单140 /// <remark>141 /// Author:ZhangRongHua142 /// Create DateTime: 2009-6-21 10:29 143 /// Update History: 144 /// </remark>145 /// </summary>146 private void GetUpdateFiles() 147 {148 Updater.GetBaseInfo(locFile); 149 url = Updater.URL;150 string svrFile = String.Concat(url, CONFIGFILE);151152 if (String.IsNullOrEmpty(svrFile)) 153 {154 BroadCastOnUpdateComplete();155 return;156 }157158 Directory.CreateDirectory(updateTmpPath); 159 try160 {161 DownLoadFile(CONFIGFILE, tmpUpdateFile); 162 }163 catch (Exception ex)164 {165 MessageBox.Show("无法连接远程服务器，无法更新程序", "提示",MessageBoxButtons.OK, rmation); 166Process.Start(Updater.MainProgram); 167 Close();168 }169170 updateList = Updater.GetUpdateFileList(locFile, tmpUpdateFile);171 if (updateList == null || updateList.Count < 1) 172 {173 BroadCastOnUpdateComplete(); 174 return;175 }176177 pbUpdate.Maximum = updateList.Count; 178 pbUpdate.Minimum = 0;179 lblInfo.Text = String.Concat(updateList.Count, "个文件需要更新!");180 lblInfo.BringToFront();181 lblState.BringToFront();182 lblInfo.Update();183184 pbUpdate.Maximum = updateList.Count; 185 pbUpdate.Minimum = 0;186187 for (int i = 0; i < updateList.Count; i++) 188 {189 string file = updateList;190 ListViewItem lvItem = new ListViewItem(); 191 lvItem.Text = file;192 lvItem.SubItems.Add(Updater.MainProgramVersion); 193lvUpdateList.Items.Add(lvItem); 194 }195 }196197 private void UpdateUIInfo(int i, string message) 198 { 199 pbUpdate.Value = i + 1;200 lblState.Text = message;201 lblState.Update();202 }203204 private void BroadCastOnUpdateComplete() 205 {206 if (OnUpdateComplete != null)207 {208 OnUpdateComplete();209 }210 }211212 private void DownLoadUpdateFiles()213 {214 if (updateList == null || updateList.Count < 1) 215 { 216 BroadCastOnUpdateComplete();217 return;218 }219220 try221 {222 UpdateUI dUpdateUI = new UpdateUI(UpdateUIInfo); 223 AsycDownLoadFile dAsycDownLoadFile = new AsycDownLoadFile(DownLoadFile);224 for (int i = 0; i < updateList.Count; i++) 225 {226 string file = updateList;227 string destFile = String.Concat(updateTmpPath, "\\", file);228 string destFileName =destFile.Substring(stIndexOf("/") +1);229 string srcFile = String.Concat(url, file); 230 var srcFileName = file.Trim('/'); 231 destFile = destFile.Replace("/", "\\"); 232 Directory.CreateDirectory(destFile.Substring(0,stIndexOf("\\")));233 string curentFile = String.Concat("正在更新第", i + 1, "/",updateList.Count, "个", file);234235 Invoke(dAsycDownLoadFile, new object[] { srcFileName,srcFileName, i });236 Thread.Sleep(50);237 Invoke(dUpdateUI, new object[] {i, curentFile});238 }239 }240 catch (Exception ex)241 {242 Debug.WriteLine(ex.Message); 243 }244245 BroadCastOnUpdateComplete();246 }247248249250 private void CopyUpdateFiles(string srcPath, string destPath) 251 {252 string[] files = Directory.GetFiles(srcPath); 253 for (int i = 0;i < files.Length; i++) 254 {255 string srcFile = files;256 string destFile = string.Concat(destPath, "\\",Path.GetFileName(srcFile));257 try258 {259 File.Copy(srcFile, destFile, true); 260 }261 catch (System.IO.IOException ex) 262 {263264265 }266267 }268269 string[] dirs = Directory.GetDirectories(srcPath); 270 for (int i = 0; i < dirs.Length; i++) 271 {272 srcPath = dirs;273 string tmpDestPath = String.Concat(destPath, "\\",Path.GetFileName(srcPath));274 Directory.CreateDirectory(tmpDestPath); 275CopyUpdateFiles(srcPath, tmpDestPath); 276 }277 }278279280281 /**//// <summary>282 /// 更新完成后，要执行的动作(将下载的文件从临时目录复制到主目录，重启主程序)283 /// <remark>284 /// Author:ZhangRongHua285 /// Create DateTime: 2009-6-21 12:25 286 /// Update History: 287 /// </remark>288 /// </summary>289 /// <param name="srcPath">The SRC path.</param> 290 /// <param name="destPath">The dest path.</param> 291 private void ExecuteUpdate(string srcPath, string destPath)292 {293 if (errorList != null && errorList.Count < 1) 294 {295 lblInfo.Text = "正在执行更新";296 lblInfo.Update();297 CopyUpdateFiles(srcPath, destPath); 298 File.Copy(tmpUpdateFile, locFile, true); 299 }300 Process.Start(Updater.MainProgram); 301302 Close();303 }304305 private void DownLoadFile(string srcFile, string destFile, ListViewItem lvItem)306 {307 try308 {309 DownLoadFile(srcFile, destFile); 310 lvItem.SubItems.Add("Ok");311 }312 catch (Exception ex)313 {314 Debug.WriteLine(ex.Message); 315 lvItem.SubItems.Add("fail");316 ErrorInfo errorInfo = new ErrorInfo(); 317 errorInfo.File = srcFile;318 errorInfo.ErrorLevel = ErrorLevel.Serious; 319 errorInfo.Message = ex.Message; 320 errorList.Add(errorInfo);321 }322 }323324 private void DownLoadFile(string srcFile, string destFile, int i) 325 {326 ListViewItem lvItem = lvUpdateList.Items; 327328 lvUpdateList.Items.EnsureVisible(); 329 try330 {331 DownLoadFile(srcFile, destFile); 332 lvItem.SubItems.Add("Ok"); 333 }334 catch (Exception ex)335 {336 Debug.WriteLine(ex.Message); 337 lvItem.SubItems.Add("fail");338 ErrorInfo errorInfo = new ErrorInfo(); 339 errorInfo.File = srcFile; 340 errorInfo.ErrorLevel = ErrorLevel.Serious; 341 errorInfo.Message = ex.Message; 342 errorList.Add(errorInfo); 343 MessageBox.Show(destFile); 344 }345 }346347 #endregion348 }349}。
