程序动态升级版本

C#实现程序动态升级版本。通过反射获取本地版本，然后跟服务器中的版本进行对比，从而实现版本更新。(参考别人的，供自己记忆和参看)

 

 

1.把代码编译为一个类库文件，通过程序引用

namespace SoftUpdate
{

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

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

        #region 构造函数
        public Update() { }

        /// <summary>   
        /// 程序更新   
        /// </summary>   
        /// <param name="file">要更新的文件</param>   
        public Update(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 UpdateMethod()
        {
            try
            {
                if (!isUpdate)
                    return;
                WebClient wc = new WebClient();
                string filename = "";
                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;
        }
    }
}

 

 

2.XML文件类容

<?xml version="1.0" encoding="utf-8" ?>    
<Update>  
   <Soft Name="BlogWriter">  
     <Verson>1.0.1.2</Verson>    
     <DownLoad>D:\ilyin\Socket.rar</DownLoad>    
  </Soft>  
</Update> 

 

 

3.单击事件里面调用下面的方法:

  public void checkUpdate()   
        {   
            SoftUpdate app = new SoftUpdate(Application.ExecutablePath, "BlogWriter");   
            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);   
        }