知识大全 c#在线升级

Posted 2022-07-18 文件

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　　面介绍一种用Web Services制作的升级程序通过Web Services 升级程序就象读写本机文件一样简单所以我就直接给出代码

　　Web Services部分代码 using System; using System Web; using System Web Services; using System Web Services Protocols; using System IO;

　　[WebService(Namespace = )] [WebServiceBinding(ConformsTo = WsiProfiles BasicProfile _ )] public class Service : System Web Services WebService public Service() //如果使用设计的组件请取消注释以下行 //InitializeComponent(); /// <summary> /// 需要升级文件的服务器路径 /// </summary> private const string UpdateServerPath = d:\\\\Debug ; [WebMethod(Description = 返回服务器上程序的版本号 )] public string ServerVer() return ; [WebMethod(Description = 返回需更新的文件 )] public string[] NewFiles() DirectoryInfo di = new DirectoryInfo(UpdateServerPath); FileInfo[] fi = di GetFiles(); int intFiles= fi Length; string[] myNewFiles = new string[intFiles]; int i = ; foreach (FileInfo fiTemp in fi) myNewFiles[i] = fiTemp Name; System Diagnostics Debug WriteLine(fiTemp Name); i++;

　　return myNewFiles; [WebMethod(Description = 返回需更新的文件的大小 )] public int AllFileSize() int filesize = ; string[] files = Directory GetFiles(UpdateServerPath); foreach (string file in files) FileInfo myInfo = new FileInfo(file); filesize += (int)myInfo Length / ; return filesize;

　　[WebMethod(Description = 返回给定文件的字节数组 )] public byte[] GetNewFile(string requestFileName) ///得到服务器端的一个文件 if (requestFileName != null || requestFileName != ) return getBinaryFile(UpdateServerPath + \\\\ +requestFileName); else return null;

　　/// <summary> /// 返回所给文件路径的字节数组 /// </summary> /// <param name= filename ></param> /// <returns></returns> private byte[] getBinaryFile(string filename) if (File Exists(filename)) try //打开现有文件以进行读取 FileStream s = File OpenRead(filename); return ConvertStreamToByteBuffer(s); catch return new byte[ ]; else return new byte[ ]; /// <summary> /// 把给定的文件流转换为二进制字节数组 /// </summary> /// <param name= theStream ></param> /// <returns></returns> private byte[] ConvertStreamToByteBuffer(System IO Stream theStream) int b ; System IO MemoryStream tempStream = new System IO MemoryStream(); while ((b = theStream ReadByte()) != ) tempStream WriteByte(((byte)b )); return tempStream ToArray();

　　升级程序代码 using System; using System Collections Generic; using System ComponentModel; using System Data; using System Drawing; using System Text; using System Windows Forms; using System Threading; using System Xml; using System IO; using System Diagnostics;

　　namespace AutoUpdate public partial class frmAutoUpdate : Form public frmAutoUpdate() InitializeComponent(); /// <summary> /// 当前版本 /// </summary> private string m_strLocalVer; /// <summary> /// 服务器版本 /// </summary> private string m_strServerVer; /// <summary> /// 需要更新的文件总数 /// </summary> private int m_intFilesCount = ; /// <summary> /// 需要更新的文件大小 /// </summary> private int m_AllFileSize; /// <summary> /// 正在下载的文件大小 /// </summary> private int m_downingFileSize; /// <summary> /// 已经下载的文件大小 /// </summary> private int m_downedFileSize; /// <summary> ///数组需要更新的文件 /// </summary> private string[] m_Files = null; /// <summary> /// 定义文件对象 /// </summary> WebReference Service ws; /// <summary> /// 连接WebServeces并下载文件线程 /// </summary> private Thread DownThread; private void frmAutoUpdata_Load(object sender EventArgs e) DownThread = new Thread(new ThreadStart(StartUpdate)); DownThread Start(); /// <summary> /// 连接服务器开始升级 /// </summary> private void StartUpdate() ws = new WebReference Service(); m_AllFileSize = ws AllFileSize(); try m_strLocalVer =Config Ver; //从配置文件中读取当前版本号 m_strServerVer = ws ServerVer();//保存服务器版本号

　　BeginInvoke(new System EventHandler(UpdateUI) lblLink); //当前版本低于服务器版本开始更新 if (double Parse(m_strLocalVer) < double Parse(m_strServerVer)) BeginInvoke(new System EventHandler(UpdateUI) lblDownLoad); m_Files = ws NewFiles();//需要更新的文件 if (m_Files != null) m_intFilesCount = m_Files Length; for (int i = ; i <= m_intFilesCount ; i++) DownFile(m_Files[i]); Debug WriteLine(m_Files[i]); // Config VER = strServerVer;//将版本号记录到配置文件中 else BeginInvoke(new EventHandler(OnShowMessage) 你计算机上安装的已经是最新版本了不需要升级 ); return; catch (Exception ex) BeginInvoke(new EventHandler(OnShowMessage) ex Message); return; //UI线程设置label属性 BeginInvoke(new System EventHandler(UpdateUI) lblStartExe); //安装文件 MethodInvoker miSetup = new MethodInvoker(this StartSetup); this BeginInvoke(miSetup); /// <summary> /// 下载文件 /// </summary> /// <param name= fileName >文件名</param> private void DownFile(string fileName) //得到二进制文件字节数组 byte[] bt = ws GetNewFile(fileName); m_downingFileSize = bt Length / ; string strPath = Application StartupPath + \\\\Update\\\\ + fileName; if (File Exists(strPath)) File Delete(strPath); FileStream fs = new FileStream(strPath FileMode CreateNew); fs Write(bt bt Length); fs Close(); /// <summary> /// 开始安装下载的文件 /// </summary> private void StartSetup() // 结束当前运行的主程序 Process[] pros = Process GetProcesses(); for (int i = ; i < pros Length; i++) if (pros[i] ProcessName == 教师考勤系统 ) pros[i] Kill(); // 开始复制文件 for (int i = ; i <= m_intFilesCount ; i++) string sourceFileName = Application StartupPath + \\\\Update\\\\ + m_Files[i]; string destFileName = Application StartupPath + \\\\ + m_Files[i]; if (File Exists(destFileName)) File Delete(destFileName); File Copy(sourceFileName destFileName false); // 升级完成启动主程序 string StrExe = Application StartupPath + \\\\教师考勤系统 exe ;

　　if (File Exists(StrExe)) System Diagnostics Process Start(StrExe);

　　//关闭升级程序 Application Exit();

　　#region 辅助方法确保线程安全

　　/// <summary> /// Label上显示信息 /// </summary> private void UpdateUI(object sender EventArgs e) Label lbl = (Label)sender; lbl ForeColor = SystemColors Desktop; lblLocalVer Text = m_strLocalVer; lblServerVer Text = m_strServerVer;

　　/// <summary> /// 显示对话框 /// </summary> private void OnShowMessage(object sender EventArgs e) MessageBox Show(this sender ToString() this Text MessageBoxButtons OK MessageBoxIcon Information); Thread Sleep( ); this Close(); /// <summary> /// 显示进度条 /// </summary> private void InvokePrgBar() if (prgBar Value < ) prgBar Value = * (int)m_downedFileSize / m_AllFileSize; prgBar Update(); System Diagnostics Debug WriteLine( prgBar Value: + prgBar Value); /// <summary> /// 计算文件已下载的百分比 /// </summary> private void subPrgBar() m_downedFileSize += m_downingFileSize; System Diagnostics Debug WriteLine( AllFileSize + m_AllFileSize); System Diagnostics Debug WriteLine( downingFileSize + m_downingFileSize); do Thread Sleep( ); MethodInvoker mi = new MethodInvoker(this InvokePrgBar); this BeginInvoke(mi); while (m_AllFileSize <= m_downedFileSize); #endregion

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