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自動更新的軟件的目的在于讓客戶不在為了尋找最新軟件花費時間。也不用去到開發(fā)商的網站上查找。客戶端的軟件自動會在程序啟動前查找服務器上最新的版本。和自己當前軟件的版本比較，如果服務器的是最新版本?？蛻舳藙t進行自動下載、解壓、安裝。當然了下載是要有網絡的，并且用戶可以根據提示去完成操作。再也不用為找不到最新版本的軟件而頭疼。
轉自：http://blog.csdn.net/lybwwp/article/details/8426022

下面是我的大體思路，已經得到了實現(xiàn)： 1、寫一個webservice，提供一個獲取服務器xml中版本的數據的方法。|

<?xml version="1.0" encoding="utf-8" ?>
<Content>
  <Project id="程序名稱" Edition="1.0"> </Project>
</Content>

2、在WinForm應用程序啟動的時候，首先訪問webservice獲取服務器的xml中的版本號，然后獲取客戶端的xml中的版本號。將兩個版本號比較，若服務器中的版本號大，則提示提示可以在線更新應用程序。

3、然后客戶端自動下載網絡上的zip壓縮包到本機的指定位置，進行自動解壓縮到安裝的目錄進行覆蓋。解壓縮完畢之后，用進程打開所解壓過的exe文件進行軟件安裝。同時關閉客戶端軟件所在的進程。

4、注意：升級程序和應用程序都是單獨的，應用程序在使用時不能對本身進行升級（覆蓋會失敗）。

具體代碼如下：

第一部分應用程序如口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()
        {
            //服務器上的版本號
            string NewEdition = "1.0";
            //應用程序中的版本號
            string OldEdition = "1.0";
 
            try
            {
                //服務器上的版本號
                NewEdition = webserverClase.getCopyRightCode();
 
                //獲取系統(tǒng)中xml里面存儲的版本號               
                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");//動態(tài)數組
                    }
                    break;
                }
                double newE = double.Parse(NewEdition);
                double oldE = double.Parse(OldEdition);
                //比較兩個版本號，判斷應用程序是否要更新
                if (newE > oldE)
                {
                    //更新程序¨
                    DialogResult dr = XtraMessageBox.Show("發(fā)現(xiàn)新的版本是否要更新該軟件", "平浪舟現(xiàn)貨程序化交易--更新提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
                    if (dr == DialogResult.OK)
                    {
                        //打開下載窗口
                        // Application.Run(new DownUpdate());
 
                        //啟動安裝程序                        
                        System.Diagnostics.Process.Start(Application.StartupPath + @"\Upgrade_Form.exe");
 
                        Application.Exit();
                    }
                    else
                    {
                        //若用戶取消，打開初始界面
                        anshield_Login login = new anshield_Login();
                        if (login.ShowDialog() == DialogResult.OK)
                        {
                            Application.Run(new Main_AutoFutures());
                        }
                    }
                }
                else
                {
                    //若服務器版本低于或相等客戶端，打開初始界面
                    anshield_Login login = new anshield_Login();
                    if (login.ShowDialog() == DialogResult.OK)
                    {
                        Application.Run(new Main_AutoFutures());
                    }
                }
            }
            catch
            {
                XtraMessageBox.Show("網絡鏈接失??！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
 
            }
        }
 
       
        /// <summary>
        /// 應用程序的主入口點。
        /// </summary>
        [STAThread]
        static void Main()
        {
             
            //保證同時只有一個客戶端在運行   
            System.Threading.Mutex mutexMyapplication = new System.Threading.Mutex(false, "jigou_plz.exe");
            if (!mutexMyapplication.WaitOne(100, false))
            {
                XtraMessageBox.Show("程序" + Application.ProductName + "已經在運行！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);              
                return;
            }
            else
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                //漢化
                hugengyong hu = new hugengyong();               
                DevExpress.UserSkins.OfficeSkins.Register();
                DevExpress.Skins.SkinManager.EnableFormSkins();
                DevExpress.UserSkins.BonusSkins.Register();
 
                LoadMath();
                }
        }
    }
}
  
 
  
 
 
//該代碼片段來自于: http://www.sharejs.com/codes/csharp/6043

第二部分：升級程序代碼如下：

  //debug目錄，用于存放壓縮文件
        string path = Application.StartupPath;
 
 private void btnDown_Click(object sender, EventArgs e)
        {
            string zipFile = path + @"\jigou_plz.zip";
            //關閉原有的應用程序  
            killProess();
             
            btnDown.Enabled = false;
            button2.Enabled = false;
            //自動下載壓縮包,并且解壓，最后關閉當前進程，進行安裝
            try
            {
                //下載自動更新
                string downUrl = ConfigurationManager.ConnectionStrings["DownUrl"].ConnectionString.ToString().Trim();
                if (!string.IsNullOrEmpty(downUrl))
                {
                    DownloadFile(downUrl, zipFile, progressBar1, label1);
                }
                else
                {
                    MessageBox.Show("Config中的下載路徑配置錯誤!", "錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
            catch
            {
                MessageBox.Show("當前沒有網絡或者文件地址不正確");
                return;
            }          
            //解a壓1
            try
            {
                //關閉原有的應用程序  
                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("升級完成！，請重新登陸！", "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 下載文件        
        /// </summary>        
        /// <param name="URL">下載文件地址</param>       
        /// 
        /// <param name="Filename">下載后的存放地址</param>        
        /// <param name="Prog">用于顯示的進度條</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 = "下載進度" + percent.ToString() + "%";
                    System.Windows.Forms.Application.DoEvents(); //必須加注這句代碼，否則label1將因為循環(huán)執(zhí)行太快而來不及顯示信息
                }
                label1.Text = "下載完成。安裝中... ...";
                so.Flush();//將緩沖區(qū)內在寫入到基礎流中
                st.Flush();//將緩沖區(qū)內在寫入到基礎流中
                so.Close();
                st.Close();
            }
            catch (System.Exception)
            {
                throw;
            }
        }
 
  
 
 /// <summary>
        /// 關閉原有的應用程序 
        /// </summary>
        private void killProess()
        {
            this.label1.Text = "正在關閉程序....";
            System.Diagnostics.Process[] proc = System.Diagnostics.Process.GetProcessesByName("Anshield_AutoFutures");
            //關閉原有應用程序的所有進程
            foreach (System.Diagnostics.Process pro in proc)
            {
                pro.Kill();
            }
        }
 
  
 
 
//該代碼片段來自于: http://www.sharejs.com/codes/csharp/6043

zip壓縮文件解壓方法類

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>
        /// 解壓縮一個 zip 文件。
        /// </summary>
        /// <param name="zipedFile">zip文件路徑</param>
        /// <param name="strDirectory">解壓路徑</param>
        /// <param name="password">zip文件的密碼</param>
        /// <param name="overWrite">是否覆蓋已存在的文件。</param>
        /// <param name="delteFile">解壓后是否刪除文件</param>
        public static void UnZip(string zipedFile, string strDirectory, string password, bool overWrite,bool delteFile)
        {
            //路徑不存在則創(chuàng)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);
            }
        }
 
    }
}
//該代碼片段來自于: http://www.sharejs.com/codes/csharp/6043

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