/// <summary>
///
/// </summary>
/// <param name="savePath"></param>
/// <param name="url"></param>
/// <param name="overwrite"></param>
/// <returns></returns>
private bool DownloadFile(string savePath, string url, bool overwrite = true)
{
//打开上次下载的文件
long SPosition = 0;
var exist = File.Exists(savePath) && overwrite == false;
//实例化流对象
using (var FStream = exist ? File.OpenWrite(savePath) : new FileStream(savePath, FileMode.Create))
{
if (exist)
{
SPosition = FStream.Length;
FStream.Seek(SPosition, SeekOrigin.Current);
}
try
{
//打开网络连接
var myRequest = (HttpWebRequest)HttpWebRequest.Create(url);
if (SPosition > 0)
{
myRequest.AddRange((int)SPosition);
}
long totalSize = SPosition;
var args = new UpdateProgressChangedEventArgs {
CurrentProgress = _progressValue, TotalProgress = _totalProgress, Message = "下载文件中...", State = UpdateStateChangeStateEnum.InProgress
};
using (var myStream = myRequest.GetResponse().GetResponseStream())
{
//定义一个字节数据
var btContent = new byte[512];
var intSize = myStream.Read(btContent, 0, 512);
while (intSize > 0)
{
totalSize += intSize;
args.CurrentProgress = _progressValue + totalSize;
OnUpdateProgressChangedEvent(this, args);
if (args.NeedCancel)
{
_stopSignal = true;
return(false);
}
FStream.Write(btContent, 0, intSize);
intSize = myStream.Read(btContent, 0, 512);
}
}
return(true);
}
catch (Exception)
{
return(false);
}
}
}
private void UpdateProgress(UpdateProgressChangedEventArgs e)
{
if (lblMessage.InvokeRequired)
{
Invoke(new UpdateProgressDelegate(UpdateProgress), e);
}
else
{
if (lblMessage.Text != e.Message)
{
lblMessage.Text = e.Message;
}
var progress = (int)((double)e.CurrentProgress / e.TotalProgress * 100);
if (progress != progressBar1.Value && progress <= 100)
{
progressBar1.Value = progress;
}
if (_stopSignal)
{
e.NeedCancel = true;
}
if (e.State == UpdateStateChangeStateEnum.Done)
{
btnUpdate.Text = "开始更新";
btnUpdate.Enabled = false;
if (MessageBox.Show("更新完成，是否立即打开软件？", "完成", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
{
var startInfo = new ProcessStartInfo
{
UseShellExecute = true,
WorkingDirectory = Environment.CurrentDirectory,
FileName = "LoowooTech.Stock.exe",
};
try
{
Process.Start(startInfo);
Application.Exit();
}
catch
{
return;
}
}
}
else if (e.State == UpdateStateChangeStateEnum.Fail)
{
btnUpdate.Text = "开始更新";
btnUpdate.Enabled = true;
}
}
}
public void StartUpdate()
{
_stopSignal = false;
var localFiles = new List <string>();
_progressValue = 0;
_totalProgress = (long)(_totalProgress * 1.1);
OnUpdateProgressChangedEvent(this, new UpdateProgressChangedEventArgs {
CurrentProgress = _progressValue, TotalProgress = _totalProgress, Message = "开始更新", State = UpdateStateChangeStateEnum.InProgress
});
foreach (var file in RemoteVersion.Files)
{
for (var i = 0; i < 3; i++)
{
try
{
var localFile = DownloadFile(file);
if (string.IsNullOrEmpty(localFile))
{
throw new Exception("下载失败");
}
_progressValue += file.Size;
var args = new UpdateProgressChangedEventArgs {
CurrentProgress = _progressValue, TotalProgress = _totalProgress, Message = "下载文件中...", State = UpdateStateChangeStateEnum.InProgress
};
OnUpdateProgressChangedEvent(this, args);
if (args.NeedCancel)
{
return;
}
localFiles.Add(localFile);
break;
}
catch
{
if (_stopSignal == true)
{
return;
}
if (i == 2)
{
OnUpdateProgressChangedEvent(this, new UpdateProgressChangedEventArgs {
CurrentProgress = 0, TotalProgress = 100, Message = "下载远程文件失败", State = UpdateStateChangeStateEnum.Fail
});
return;
}
else
{
OnUpdateProgressChangedEvent(this, new UpdateProgressChangedEventArgs {
CurrentProgress = 0, TotalProgress = 100, Message = "下载失败正在重试", State = UpdateStateChangeStateEnum.InProgress
});
}
}
}
}
OnUpdateProgressChangedEvent(this, new UpdateProgressChangedEventArgs {
CurrentProgress = _progressValue, TotalProgress = _totalProgress, Message = "正在更新文件...", State = UpdateStateChangeStateEnum.InProgress
});
for (var i = 0; i < localFiles.Count; i++)
{
var file = RemoteVersion.Files[i];
if (file.Type == "Zip")
{
ExtractFile(file, localFiles[i]);
}
else
{
ReplaceFile(file, localFiles[i]);
}
}
using (var writer = new StreamWriter("local.json", false))
{
writer.WriteLine(JsonConvert.SerializeObject(RemoteVersion));
}
LocalVersion = RemoteVersion;
OnUpdateProgressChangedEvent(this, new UpdateProgressChangedEventArgs {
CurrentProgress = _totalProgress, TotalProgress = _totalProgress, Message = "自动更新完成", State = UpdateStateChangeStateEnum.Done
});
}
private void UpdateManager_OnUpdateProgressChangedEvent(object sender, UpdateProgressChangedEventArgs e)
{
UpdateProgress(e);
}