public bool OnCheckForUpdateFinished(DownloadedVersionInfo versionInfo)
{
if ((versionInfo.error) || (versionInfo.installerUrl.Length == 0) || (versionInfo.latestVersion == null))
{
MessageBox.Show(this, "Error while looking for the newest version", "Check for updates", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
Version curVer = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
if (curVer.CompareTo(versionInfo.latestVersion) >= 0)
{
lblupdatestatus.Text = "No new version detected, Try again later";
return(false);
}
string str = String.Format("New version found!\nYour version: {0}.\nNewest version: {1}.", curVer, versionInfo.latestVersion);
return(DialogResult.Yes == MessageBox.Show(this, str, "Check for updates", MessageBoxButtons.YesNo, MessageBoxIcon.Question));
}
private void CheckForUpdateFunction()
{
DownloadedVersionInfo i = new DownloadedVersionInfo();
i.error = true;
i.installerUrl = "";
i.homeUrl = "";
try
{
XmlTextReader reader = new XmlTextReader(xmlFileUrl);
reader.MoveToContent();
string elementName = "";
Version newVer = null;
string url = "";
string msiUrl = "";
if (StopWorkerThread())
{
return;
}
if ((reader.NodeType == XmlNodeType.Element) && (reader.Name == "appinfo"))
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
elementName = reader.Name;
}
else
{
if ((reader.NodeType == XmlNodeType.Text) && (reader.HasValue))
{
switch (elementName)
{
case "version":
newVer = new Version(reader.Value);
break;
case "url":
url = reader.Value;
break;
case "installer":
msiUrl = reader.Value;
break;
case "date":
//elementName = elementName;
break;
}
}
}
}
}
reader.Close();
i.error = false;
i.latestVersion = newVer;
i.homeUrl = url;
i.installerUrl = msiUrl;
}
catch (Exception)
{
}
if (StopWorkerThread())
{
return;
}
bool download = (bool)this.mainApp.Invoke(new DelegateCheckForUpdateFinished(mainApp.OnCheckForUpdateFinished), new Object[] { i });
if (!download)
{
return;
}
// download and let the main thread know
DownloadInstallerInfo i2 = new DownloadInstallerInfo();
i2.error = true;
string filepath = "";
try
{
///DOWNLOADING...
WebRequest request = WebRequest.Create(i.installerUrl);
WebResponse response = request.GetResponse();
string filename = "";
int contentLength = 0;
for (int a = 0; a < response.Headers.Count; a++)
{
try
{
string val = response.Headers.Get(a);
switch (response.Headers.GetKey(a).ToLower())
{
case "content-length":
contentLength = Convert.ToInt32(val);
break;
case "content-disposition":
string[] v2 = val.Split(';');
foreach (string s2 in v2)
{
string[] v3 = s2.Split('=');
if (v3.Length == 2)
{
if (v3[0].Trim().ToLower() == "filename")
{
char[] sss = { ' ', '"' };
filename = v3[1].Trim(sss);
}
}
}
break;
}
}
catch (Exception) { };
}
if (StopWorkerThread())
{
return;
}
if (filename.Length == 0)
{
filename = "installer.msi";
}
filepath = Path.Combine(Path.GetTempPath(), filename);
if (File.Exists(filepath))
{
try
{
File.Delete(filepath);
} catch
{
}
if (File.Exists(filepath))
{
string rname = Path.GetRandomFileName();
rname.Replace('.', '_');
rname += ".msi";
filepath = Path.Combine(Path.GetTempPath(), rname);
}
}
update_check st_dow = new update_check();
st_dow.lblupdatestatus.Text = "Downloading is in Progress, Please wait..";
st_dow.lblupdatestatus.Update();
Stream stream = response.GetResponseStream();
int pos = 0;
byte[] buf2 = new byte[8192];
FileStream fs = new FileStream(filepath, FileMode.CreateNew);
while ((0 == contentLength) || (pos < contentLength))
{
int maxBytes = 8192;
if ((0 != contentLength) && ((pos + maxBytes) > contentLength))
{
maxBytes = contentLength - pos;
}
int bytesRead = stream.Read(buf2, 0, maxBytes);
if (bytesRead <= 0)
{
break;
}
fs.Write(buf2, 0, bytesRead);
if (StopWorkerThread())
{
return;
}
pos += bytesRead;
}
fs.Close();
stream.Close();
i2.error = false;
i2.path = filepath;
} catch
{
// when something goes wrong - at least do the cleanup :)
if (filepath.Length > 0)
{
try
{
File.Delete(filepath);
}
catch
{
}
}
}
if (StopWorkerThread())
{
return;
}
this.mainApp.BeginInvoke(new DelegateDownloadInstallerFinished(mainApp.OnDownloadInstallerinished), new Object[] { i2 });
}