C# 自动升级

自动更新的软件的目的在于让客户不在为了寻找最新软件花费时间。也不用去到开发商的网站上查找。客户端的软件自动会在程序启动前查找服务器上最新的版本。和自己当前软件的版本比较，如果服务器的是最新版本。客户端则进行自动下载、解压、安装。当然了下载是要有网络的，并且用户可以根据提示去完成操作。再也不用为找不到最新版本的软件而头疼。下面是我的大体思路，已经得到了实现：

1、  写一个webservice，提供一个获取服务器xml中版本的数据的方法。|
<?xml version="1.0" encoding="utf-8" ?>
<Content>
  <Project id="程序名称" Edition="1.0"> </Project>
</Content>

2、 
在WinForm应用程序启动的时候，首先访问webservice获取服务器的xml中的版本号，然后获取客户端的xml中的版本号。将两个版本号比较，若服务器中的版本号大，则提示提示可以在线更新应用程序。

3、 
然后客户端自动下载网络上的zip压缩包到本机的指定位置，进行自动解压缩到安装的目录进行覆盖。解压缩完毕之后，用进程打开所解压过的exe文件进行软件安装。同时关闭客户端软件所在的进程。

4、注意：升级程序和应用程序都是单独的，应用程序在使用时不能对本身进行升级（覆盖会失败）。

具体代码如下：

第一部分 应用程序如口Program：

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using Medicine_ERP;
using DevExpress.XtraEditors;
using System.Xml;
using Anshield_AutoFutures.BaseClase;

namespace Anshield_AutoFutures
{
    static class Program
    {
        private static void LoadMath()
        {
            //服务器上的版本号
            string NewEdition = "1.0";
            //应用程序中的版本号
            string OldEdition = "1.0";

try
            {
                //服务器上的版本号
                NewEdition = webserverClase.getCopyRightCode();

//获取系统中xml里面存储的版本号              
                String fileName = Application.StartupPath + "\\XMLEdition.xml";
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.Load(fileName);
                XmlNode xn = xmlDoc.SelectSingleNode("Content");
                XmlNodeList xnl = xn.ChildNodes;
                foreach (XmlNode xnf in xnl)
                {
                    XmlElement xe = (XmlElement)xnf;
                    if (xe.GetAttribute("id") == "jigou_plz")
                    {
                        OldEdition = xe.GetAttribute("Edition");//动态数组
                    }
                    break;
                }
                double newE = double.Parse(NewEdition);
                double oldE = double.Parse(OldEdition);
                //比较两个版本号，判断应用程序是否要更新
                if (newE > oldE)
                {
                    //更新程序¨
                    DialogResult dr = XtraMessageBox.Show("发现新的版本是否要更新该软件", "平浪舟现货程序化交易--更新提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
                    if (dr == DialogResult.OK)
                    {
                        //打开下载窗口
                        // Application.Run(new DownUpdate());

//启动安装程序                       
                        System.Diagnostics.Process.Start(Application.StartupPath + @"\Upgrade_Form.exe");

Application.Exit();
                    }
                    else
                    {
                        //若用户取消，打开初始界面
                        anshield_Login login = new anshield_Login();
                        if (login.ShowDialog() == DialogResult.OK)
                        {
                            Application.Run(new Main_AutoFutures());
                        }
                    }
                }
                else
                {
                    //若服务器版本低于或相等客户端，打开初始界面
                    anshield_Login login = new anshield_Login();
                    if (login.ShowDialog() == DialogResult.OK)
                    {
                        Application.Run(new Main_AutoFutures());
                    }
                }
            }
            catch
            {
                XtraMessageBox.Show("网络链接失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);

}
        }

/// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
           
            //保证同时只有一个客户端在运行  
            System.Threading.Mutex mutexMyapplication = new System.Threading.Mutex(false, "jigou_plz.exe");
            if (!mutexMyapplication.WaitOne(100, false))
            {
                XtraMessageBox.Show("程序" + Application.ProductName + "已经在运行！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);              
                return;
            }
            else
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                //汉化
                hugengyong hu = new hugengyong();              
                DevExpress.UserSkins.OfficeSkins.Register();
                DevExpress.Skins.SkinManager.EnableFormSkins();
                DevExpress.UserSkins.BonusSkins.Register();

LoadMath();
                }
        }
    }
}

第二部分：升级程序代码如下：

//debug目录，用于存放压缩文件
        string path = Application.StartupPath;

private void btnDown_Click(object sender, EventArgs e)
        {
            string zipFile = path + @"\jigou_plz.zip";
            //关闭原有的应用程序 
            killProess();
           
            btnDown.Enabled = false;
            button2.Enabled = false;
            //自动下载压缩包,并且解压，最后关闭当前进程，进行安装
            try
            {
                //下载自动更新
                string downUrl = ConfigurationManager.ConnectionStrings["DownUrl"].ConnectionString.ToString().Trim();
                if (!string.IsNullOrEmpty(downUrl))
                {
                    DownloadFile(downUrl, zipFile, progressBar1, label1);
                }
                else
                {
                    MessageBox.Show("Config中的下载路径配置错误!", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
            catch
            {
                MessageBox.Show("当前没有网络或者文件地址不正确");
                return;
            }         
            //解a压1
            try
            {
                //关闭原有的应用程序 
                killProess();
                //unCompressRAR(path, path, "setup.rar", true);
                BaseClase.Zip.UnZip(zipFile, path, "", true,true);
              
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return;
            }
            if (MessageBox.Show("升级完成！，请重新登陆！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information) == DialogResult.OK)
            {
                FileInfo file = new FileInfo(path + @"\Anshield_AutoFutures.exe");//文件地址
                if (file.Exists)
                {
                    Process.Start(path + @"\Anshield_AutoFutures.exe");
                }            
                Application.Exit();
            }
          
        }
        /// <summary>       
        /// c#.net 下载文件       
        /// </summary>       
        /// <param name="URL">下载文件地址</param>      
        ///
        /// <param name="Filename">下载后的存放地址</param>       
        /// <param name="Prog">用于显示的进度条</param>       
        ///
        public void DownloadFile(string URL, string filename, System.Windows.Forms.ProgressBar prog, System.Windows.Forms.Label label1)
        {
            float percent = 0;
            try
            {
                System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(URL);
                System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse();
                long totalBytes = myrp.ContentLength;
                if (prog != null)
                {
                    prog.Maximum = (int)totalBytes;
                }
                System.IO.Stream st = myrp.GetResponseStream();
                System.IO.Stream so = new System.IO.FileStream(filename, System.IO.FileMode.Create);
                long totalDownloadedByte = 0;
                byte[] by = new byte[1024];
                int osize = st.Read(by, 0, (int)by.Length);
                while (osize > 0)
                {
                    totalDownloadedByte = osize + totalDownloadedByte;
                    System.Windows.Forms.Application.DoEvents();
                    so.Write(by, 0, osize);
                    if (prog != null)
                    {
                        prog.Value = (int)totalDownloadedByte;
                    }
                    osize = st.Read(by, 0, (int)by.Length);

percent = (float)totalDownloadedByte / (float)totalBytes * 100;
                    label1.Text = "下载进度" + percent.ToString() + "%";
                    System.Windows.Forms.Application.DoEvents(); //必须加注这句代码，否则label1将因为循环执行太快而来不及显示信息
                }
                label1.Text = "下载完成。安装中... ...";
                so.Flush();//将缓冲区内在写入到基础流中
                st.Flush();//将缓冲区内在写入到基础流中
                so.Close();
                st.Close();
            }
            catch (System.Exception)
            {
                throw;
            }
        }

/// <summary>
        /// 关闭原有的应用程序
        /// </summary>
        private void killProess()
        {
            this.label1.Text = "正在关闭程序....";
            System.Diagnostics.Process[] proc = System.Diagnostics.Process.GetProcessesByName("Anshield_AutoFutures");
            //关闭原有应用程序的所有进程
            foreach (System.Diagnostics.Process pro in proc)
            {
                pro.Kill();
            }
        }

zip压缩文件解压方法类

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.IO.Compression;
using ICSharpCode.SharpZipLib.Zip;

namespace Upgrade_Form.BaseClase
{
    class Zip
    {
    
        /// <summary>
        /// 解压缩一个 zip 文件。
        /// </summary>
        /// <param name="zipedFile">zip文件路径</param>
        /// <param name="strDirectory">解压路径</param>
        /// <param name="password">zip文件的密码</param>
        /// <param name="overWrite">是否覆盖已存在的文件。</param>
        /// <param name="delteFile">解压后是否删除文件</param>
        public static void UnZip(string zipedFile, string strDirectory, string password, bool overWrite,bool delteFile)
        {
            //路径不存在则创建
            if (Directory.Exists(strDirectory) == false)
            {
                Directory.CreateDirectory(strDirectory);
            }
            if (strDirectory == "")
                strDirectory = Directory.GetCurrentDirectory();
            if (!strDirectory.EndsWith("\\"))
                strDirectory = strDirectory + "\\";

using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipedFile)))
            {
                s.Password = password;
                ZipEntry theEntry;

while ((theEntry = s.GetNextEntry()) != null)
                {
                    string directoryName = "";
                    string pathToZip = "";
                    pathToZip = theEntry.Name;

if (pathToZip != "")
                        directoryName = Path.GetDirectoryName(pathToZip) + "\\";

string fileName = Path.GetFileName(pathToZip);

Directory.CreateDirectory(strDirectory + directoryName);

if (fileName != "")
                    {
                        if ((File.Exists(strDirectory + directoryName + fileName) && overWrite) || (!File.Exists(strDirectory + directoryName + fileName)))
                        {
                            using (FileStream streamWriter = File.Create(strDirectory + directoryName + 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;
                                }
                                streamWriter.Close();
                            }
                        }
                    }
                }

s.Close();
            }
            if (delteFile == true)
            {
                File.Delete(zipedFile);
            }
        }

}
}

出处：https://blog.csdn.net/lybwwp/article/details/8426022