打包好的应用程序进行实时更新

在应用程序的下载更新下载问题上，往往很难让版本得到统一，下面我就用些简单的方法实现版本对比，并确定是否更新的功能!

首先在解决方案下加个类库（update）用以添加并引用到winform应用程序登录页面中进行比较版本。

SoftUpdate.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Xml;
using System.Reflection;

namespace Update
{
    /// <summary>
    /// 更新完成触发的事件
    /// </summary>
    public delegate void UpdateState();


    /// <summary>
    /// 程序更新
    /// </summary>
    public class SoftUpdate
    {
        private string download;
        private const string updateUrl = "http://192.168.100.45/update.xml"; //升级配置的XML文件地址  

        #region 构造函数
        public SoftUpdate() { }
        public SoftUpdate(string file, string softName)
        {
            this.LoadFile = file;
            this.SoftName = softName;
        }
        #endregion

        #region 属性
        private string loadFile;
        private string newVerson;
        private string softName;
        private bool isUpdate;
        /// <summary>   
        /// 或取是否需要更新   
        /// </summary>
        public bool IsUpdate
        {
            get
            {
                checkUpdate();
                return isUpdate;
            }
        }

        /// <summary>   
        /// 要检查更新的文件   
        /// </summary>
        public string LoadFile
        {
            get { return loadFile; }
            set { loadFile = value; }
        }

        /// <summary>   
        /// 程序集新版本   
        /// </summary>
        public string NewVerson
        {
            get { return newVerson; }
        }

        /// <summary>   
        /// 升级的名称   
        /// </summary>
        public string SoftName
        {
            get { return softName; }
            set { softName = value; }
        }


        #endregion

        /// <summary>   
        /// 更新完成时触发的事件   
        /// </summary>
        public event UpdateState UpdateFinish;
        private void isFinish()
        {
            if (UpdateFinish != null)
                UpdateFinish();
        }

        /// <summary>   
        /// 下载更新   
        /// </summary>
        public void Update()
        {
            try
            {
                if (!isUpdate)
                    return;
                WebClient wc = new WebClient();
                string filename = "WMSSetup";
                string exten = download.Substring(download.LastIndexOf("."));
                if (loadFile.IndexOf(@"\") == -1)
                    filename = "Update_" + Path.GetFileNameWithoutExtension(loadFile) + exten;
                else
                    filename = Path.GetDirectoryName(loadFile) + "\\Update_" + Path.GetFileNameWithoutExtension(loadFile) + exten;
                wc.DownloadFile(download, filename);
                wc.Dispose();
                isFinish();
            }
            catch
            {
                throw new Exception("更新出现错误，网络连接失败！");
            }
        }

        /// <summary>   
        /// 检查是否需要更新   
        /// </summary>
        public void checkUpdate()
        {
            try
            {
                WebClient wc = new WebClient();
                Stream stream = wc.OpenRead(updateUrl);
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.Load(stream);
                XmlNode list = xmlDoc.SelectSingleNode("Update");
                foreach (XmlNode node in list)
                {
                    if (node.Name == "Soft" && node.Attributes["Name"].Value.ToLower() == SoftName.ToLower())
                    {
                        foreach (XmlNode xml in node)
                        {
                            if (xml.Name == "Verson")
                                newVerson = xml.InnerText;
                            else
                                download = xml.InnerText;
                        }
                    }
                }

                Version ver = new Version(newVerson);
                Version verson = Assembly.LoadFrom(loadFile).GetName().Version;
                int tm = verson.CompareTo(ver);

                if (tm >= 0)
                    isUpdate = false;
                else
                    isUpdate = true;
            }
            catch (Exception ex)
            {
                throw new Exception("更新出现错误，请确认网络连接无误后重试！");
            }
        }

        /// <summary>   
        /// 获取要更新的文件   
        /// </summary>   
        /// <returns></returns>
        public override string ToString()
        {
            return this.loadFile;
        }



    }
}

然后在服务器端有个xml文件进行版本的实时记录

 

<?xml version="1.0" encoding="utf-8" ?>
<Update>
  <Soft Name="WMSSetup">
    <Verson>1.0.1.2</Verson>
    <DownLoad>http://192.168.100.45/WMSSetup.rar</DownLoad>
  </Soft>
</Update>

然后在已有的登录界面加上

Login.CS

 

public login()
        {
            InitializeComponent();
            checkUpdate();  
        }

        public void checkUpdate()
        {
            SoftUpdate app = new SoftUpdate(Application.ExecutablePath, "WMSSetup");
            app.UpdateFinish += new UpdateState(app_UpdateFinish);
            try
            {
                if (app.IsUpdate && MessageBox.Show("检查到新版本，是否更新？", "Update", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                {

                    Thread update = new Thread(new ThreadStart(app.Update));
                    update.Start();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        void app_UpdateFinish()
        {
            MessageBox.Show("更新完成，请重新启动程序！", "Update", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }