winform异步系统升级—BackgroundWorker

BackgroundWorker用法实例

自己的代码，就是要执行的代码写到dowork里，ProgressChanged事件是控制进度时用的，最后的Completed事件进度完成，也就是dowork里的代码执行完成了

public BackgroundWorker bgWork;

bgWork = new BackgroundWorker();
bgWork.WorkerReportsProgress = true;
bgWork.DoWork += new DoWorkEventHandler(bgWork_DoWork);
bgWork.ProgressChanged += new ProgressChangedEventHandler(bgWork_ProgressChanged);
bgWork.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bgWork_RunWorkerCompleted);
dp = new DownLoadProgress();
dp.progressBar1.Maximum = 1000;
dp.Show();

void bgWork_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

{

try

{

dp.lb_dw.Visible = true;

dp.Close();

if (e.Error != null)

{

MessageBox.Show("升级失败" + e.Error.Message);

}

else if (e.Result != null && e.Result.Equals(false))

{

}

else

{

if (TZSys.Common.SysUpdate.Update.SysUpdate.PerUpdate(AppDomain.CurrentDomain.BaseDirectory + "update\\"))

{

#region 升级数据库

List<string> sqlstr = new List<string>();

string[] files = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory + "update\\");

foreach (string file in files)

{

if (file == AppDomain.CurrentDomain.BaseDirectory + "update\\"+"sql.txt")

{

using (FileStream fs = new FileStream(AppDomain.CurrentDomain.BaseDirectory + "update\\sql.txt", FileMode.Open, FileAccess.Read))                                 {

StreamReader sr = new StreamReader(fs);

while (sr.Peek()>=0)

{

sqlstr.Add(sr.ReadLine());

}

sr.Close();

fs.Close();

}

}

}

if (sqlstr.Count > 0)

{

string datapath = AppDomain.CurrentDomain.BaseDirectory + "Data";

string[] directorys = Directory.GetDirectories(datapath);

if (directorys.Length > 0)

{

foreach (string database in directorys)

{

string[] str = database.Split('\\');

string path = database + "\\" + str[str.Length-1]+".DB";

SqlOper sql = new SqlOper();

sql.DealSql(path, sqlstr);

}

}

File.Delete(AppDomain.CurrentDomain.BaseDirectory + "update\\" + "sql.txt");

}

#endregion

if (TZSys.Common.SysUpdate.Update.SysUpdate.StartUpdate(AppDomain.CurrentDomain.BaseDirectory + "update\\"))

{

//保存升级后的版本号

XmlDocument xml = new XmlDocument();

xml.Load(BlackBoard.DirectoryCurrent + "XML\\update.XML");

if (upcmid != "" && upmainid!="")

{

xml.GetElementsByTagName("cmpid")[0].InnerText = upcmid;

xml.GetElementsByTagName("mainid")[0].InnerText = upmainid;

xml.Save(BlackBoard.DirectoryCurrent + "XML\\update.XML");

}

if (MessageBox.Show("升级成功，是否重新启动", "提示", MessageBoxButtons.YesNo) == DialogResult.Yes)

{

if (File.Exists(BlackBoard.DirectoryCurrent + "SysUpdate.dll"))

File.Delete(BlackBoard.DirectoryCurrent + "SysUpdate.dll");

Application.Exit();

Process myProcess = new Process();

//string fileName = "ServiceClientIMForm.exe";startexe

string fileName = startexe;

ProcessStartInfo myProcessStartInfo = new ProcessStartInfo(fileName);

myProcess.StartInfo = myProcessStartInfo;

myProcess.Start();

//Environment.Exit(0);

}

}

}

}

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

}

　　　//基本不用动

void bgWork_ProgressChanged(object sender, ProgressChangedEventArgs e)

{

dp.progressBar1.Value = e.ProgressPercentage;

}

void bgWork_DoWork(object sender, DoWorkEventArgs e)

{

BackgroundWorker bw = (BackgroundWorker)sender;

try

{

if (!e.Argument.ToString().Contains(".zip"))

{

MessageBox.Show("更新包不是.zip文件，无法下载");

e.Result = false;

}

else if (!AppendDownLoad(e.Argument.ToString().Split('@')[0], e.Argument.ToString().Split('@')[1], bw))

{

MessageBox.Show("下载失败");

e.Result = false;

}

}

catch (Exception ex)

{

MessageBox.Show("下载失败" + ex.Message);

}

}

//BackgroundWorker的调用方法

public void DownloadFile(string url, string fileName)

{

fileName = DirPath + "\\" + fileName;

DFileName = fileName;

bgWork.RunWorkerAsync(url + "@" + fileName);//里面是参数是bgWork_DoWork事件的e.Argument

}