winform、C# 自动更新

用IIS或者是Tomcat搭建一个Web服务器，因为没有涉及到动态页面，所以用什么服务器无所谓，网上有太多资料，这里不再赘述。

废话不多说，直接上代码。

HttpHelper, 访问网页，下载文件等

using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.IO;

namespace AutoUpdate

{

    class HttpHelper

    {

        //以GET方式抓取远程页面内容

        public static string Get_Http(string tUrl)

        {

            string strResult;

            try

            {

                HttpWebRequest hwr = (HttpWebRequest)HttpWebRequest.Create(tUrl);

                hwr.Timeout = ;

                HttpWebResponse hwrs = (HttpWebResponse)hwr.GetResponse();

                Stream myStream = hwrs.GetResponseStream();

                StreamReader sr = new StreamReader(myStream, Encoding.Default);

                StringBuilder sb = new StringBuilder();

                while (- != sr.Peek())

                {

                    sb.Append(sr.ReadLine() + "\r\n");

                }

                strResult = sb.ToString();

                hwrs.Close();

            }

            catch (Exception ee)

            {

                strResult = ee.Message;

            }

            return strResult;

        }

        //以POST方式抓取远程页面内容

        //postData为参数列表

        public static string Post_Http(string url, string postData, string encodeType)

        {

            string strResult = null;

            try

            {

                Encoding encoding = Encoding.GetEncoding(encodeType);

                byte[] POST = encoding.GetBytes(postData);

                HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);

                myRequest.Method = "POST";

                myRequest.ContentType = "application/x-www-form-urlencoded";

                myRequest.ContentLength = POST.Length;

                Stream newStream = myRequest.GetRequestStream();

                newStream.Write(POST, , POST.Length); //设置POST

                newStream.Close();

                // 获取结果数据

                HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

                StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.Default);

                strResult = reader.ReadToEnd();

            }

            catch (Exception ex)

            {

                strResult = ex.Message;

            }

            return strResult;

        }

        /// <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 static void DownloadFile(string URL, string filename, System.Windows.Forms.ProgressBar prog, System.Windows.Forms.Label label1,string description)

        {

            float percent = ;

            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 = ;

                byte[] by = new byte[];

                int osize = st.Read(by, , (int)by.Length);

                while (osize > )

                {

                    totalDownloadedByte = osize + totalDownloadedByte;

                    System.Windows.Forms.Application.DoEvents();

                    so.Write(by, , osize);

                    if (prog != null)

                    {

                        prog.Value = (int)totalDownloadedByte;

                    }

                    osize = st.Read(by, , (int)by.Length);

                    percent = (float)totalDownloadedByte / (float)totalBytes * ;

                    label1.Text = description + "下载进度" + percent.ToString() + "%";

                    label1.Refresh();

                    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

                    System.Threading.Thread.Sleep();

                }

                so.Close();

                st.Close();

            }

            catch (System.Exception)

            {

                throw;

            }

        }

/// <summary>

/// 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>

//public static void DownloadFile(string URL, string filename)

//        {

//        DownloadFile(URL, filename, null,null);

//        }

    }

}

update.txt (JSON格式的文件，版本号，更新的文件等，网络和本地比对)

{

"Version":"",

"Server":"http://192.168.242.12:9001/",

"Description":"修正一些Bug",

"File":"Checkup.exe",

"UpdateTime":"2016-06-20 12:02:05",

"UpdateFiles":[

{"File":"xx.txt"},

{"File":"Checkup.exe"}

]

}

AutoUpdate.cs （界面、自动更新程序。需加入Newtonsoft.Json引用，网上下载直接加入引用就可以了）

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using System;

using System.ComponentModel;

using System.Configuration;

using System.Diagnostics;

using System.Threading;

using System.Windows.Forms;

namespace AutoUpdate

{

    public partial class AutoUpdate : Form

    {

        private String UpdateServer ;

        SynchronizationContext _syncContext = null;

        public AutoUpdate()

        {

            InitializeComponent();

            _syncContext = SynchronizationContext.Current;

        }

        private void dowm() {

            _syncContext.Post(downFile,new object());

        }

        private void AutoUpdate_Load(object sender, EventArgs e)

        {

            UpdateServer = ConfigurationManager.AppSettings["UpdateServer"];

            int vs = isUpdate();

            if (vs == )

            {

                label1.Text = "正在下载更新文件，请稍候。。。";

                try

                {

                    new Thread(new ThreadStart(dowm)).Start();

                }

                catch (Exception ee)

                {

                    MessageBox.Show("下载异常：" + ee.Message);

                }

            }

            else if (vs > )

            {

                label1.Text = "正在下载更新文件，请稍候。。。";

                try

                {

                    new Thread(new ThreadStart(dowm)).Start();

                    //Thread.Sleep(500);

                    //downFile();

                }

                catch (Exception ee)

                {

                    MessageBox.Show("下载异常：" + ee.Message);

                }

            }

            else {

                Console.WriteLine("小于或等于0");

                this.Close();

                Process.Start("Checkup.exe");

            }

        }

        private int isUpdate()

        {

            //Version ApplicationVersion = new Version(Application.ProductVersion);

            //int version = ApplicationVersion.Major;

            string[] lines = System.IO.File.ReadAllLines("update.txt");

            String updateFile = "";

            foreach (string line in lines)

            {

                updateFile = updateFile+"\t" + line;

            }

            JObject updateJson =JObject.Parse(updateFile);

            int version = Int32.Parse(updateJson["Version"].ToString());

            JObject udJson;

            try

            {

                udJson = JObject.Parse(HttpHelper.Get_Http(UpdateServer));

            }

            catch (Exception ee) {

                Console.WriteLine(ee.Message);

                return -;

            }

            if (udJson != null)

            {

                int serverVersion = Int32.Parse(udJson["Version"].ToString());

                return serverVersion - version;

                //    if (serverVersion-version)

                //    {

                //        Console.WriteLine("版本号不一致");

                //        return true;

                //    }

                //    else {

                //        Console.WriteLine("版本一致");

                //        return false;

                //    }

            }

            else {

                return -;

            }

        }

        private void downFile1(object state) {

            JObject udJson = JObject.Parse(HttpHelper.Get_Http(UpdateServer));

            JArray ja = (JArray)JsonConvert.DeserializeObject(udJson["UpdateFiles"].ToString());

            HttpHelper.DownloadFile(udJson["Server"].ToString() + ja[ja.Count-]["File"].ToString(), ja[ja.Count - ]["File"].ToString(),progressBar1,label1, udJson["Description"].ToString());

            HttpHelper.DownloadFile(UpdateServer, "update.txt", progressBar1, label1, udJson["Description"].ToString());

            Start();

        }

        private void downFile(object state)

        {

            JObject udJson = JObject.Parse(HttpHelper.Get_Http(UpdateServer));

            JArray ja = (JArray)JsonConvert.DeserializeObject(udJson["UpdateFiles"].ToString());

            for (int i = ; i < ja.Count; i++)

            {

                HttpHelper.DownloadFile(udJson["Server"].ToString() + ja[i]["File"].ToString(), ja[i]["File"].ToString(), progressBar1, label1, udJson["Description"].ToString());

            }

            HttpHelper.DownloadFile(UpdateServer, "update.txt", progressBar1, label1, udJson["Description"].ToString());

            Start();

        }

        private void Start() {

            Process.Start("Checkup.exe");

            this.Hide();

            this.Close();

        }

    }

}

app.config（更新地址配置文件）

<?xml version="1.0" encoding="utf-8"?>

<configuration>

  <appSettings>

    <add key="UpdateServer" value="http://192.168.242.12:9001/update.txt"></add>

  </appSettings>

</configuration>

需在相应的web服务器下放入版本号大于本地文件的update.txt。还有需要更新的文件。以及修改update.txt中UpdateFiles.

至此大功搞成。
源代码：http://download.csdn.net/detail/zuxuguang/9567453

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winform、C# 自动更新

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