private async Task StartDownloadAndInstall()
{
foreach (var item in StartupParams.Instance.LastVersionList)
{
_currentInstallVersionName = item.VersionName;
UpdateControlState(() =>
{
ChangeLog.Text = item.ChangeLog;
});
UpdateControlState(() =>
{
DownloadVersionText.Text = $"正在下载{_currentInstallVersionName}版本的更新包";
});
_webClient = new DownloadWebClient {
CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore)
};
_tempFile = Path.GetTempFileName();
var uri = new Uri(item.DownloadUrl);
_webClient.DownloadProgressChanged += _webClient_DownloadProgressChanged;;
_webClient.DownloadFileCompleted += WebClient_DownloadFileCompleted;
await _webClient.DownloadFileTaskAsync(uri, _tempFile);
SaveUpdateVersionInfo(item.Version, item.VersionName);
}
}
private void WebClient_DownloadFileCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
{
UpdateControlState(() =>
{
DownloadVersionText.Text = $"正在安装{_currentInstallVersionName}版本的更新包";
});
string fileName;
string contentDisposition = _webClient.ResponseHeaders["Content-Disposition"] ?? string.Empty;
if (string.IsNullOrEmpty(contentDisposition))
{
fileName = Path.GetFileName(_webClient.ResponseUri.LocalPath);
}
else
{
fileName = _tryToFindFileName(contentDisposition, "filename=");
if (string.IsNullOrEmpty(fileName))
{
fileName = _tryToFindFileName(contentDisposition, "filename*=UTF-8''");
}
}
var tempPath = Path.Combine(Path.GetTempPath(), fileName);
try
{
if (File.Exists(tempPath))
{
File.Delete(tempPath);
}
File.Move(_tempFile, tempPath);
}
catch (Exception ex)
{
UpdateControlState(() =>
{
DownloadVersionText.Text = $"安装{_currentInstallVersionName}版本的更新包失败," + ex.Message;
});
_webClient = null;
return;
}
var path = Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName);
ZipStorer zip = ZipStorer.Open(tempPath, FileAccess.Read);
List <ZipStorer.ZipFileEntry> dir = zip.ReadCentralDir();
for (var index = 0; index < dir.Count; index++)
{
ZipStorer.ZipFileEntry entry = dir[index];
zip.ExtractFile(entry, Path.Combine(path, entry.FilenameInZip));
int progress = (index + 1) * 100 / dir.Count;;
UpdateControlState(() =>
{
DownloadProgressBar.Value = progress;
});
UpdateControlState(() =>
{
DownloadProgressText.Text = progress + "%";
});
}
zip.Close();
UpdateControlState(() =>
{
DownloadVersionText.Text = $"版本{_currentInstallVersionName}安装成功";
});
UpdateControlState(() =>
{
DownloadProgressText.Text = string.Empty;
});
UpdateControlState(() =>
{
CurrentVersion.Content = _currentInstallVersionName;
});
}