public bool IsUpdateAvailable(string CurrentVersion)
{
if (!EnableUpdates)
{
return(false);
}
string ReleasePageAddress = "https://github.com/dlebansais/PgMessenger/releases";
try
{
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
HttpWebRequest Request = WebRequest.Create(ReleasePageAddress) as HttpWebRequest;
using (WebResponse Response = Request.GetResponse())
{
using (Stream ResponseStream = Response.GetResponseStream())
{
using (StreamReader Reader = new StreamReader(ResponseStream, Encoding.ASCII))
{
string Content = Reader.ReadToEnd();
string Pattern = @"<a href=""/dlebansais/PgMessenger/releases/tag/";
int Index = Content.IndexOf(Pattern);
if (Index >= 0)
{
string UpdateTagVersion = Content.Substring(Index + Pattern.Length, 20);
int EndIndex = UpdateTagVersion.IndexOf('"');
if (EndIndex > 0)
{
UpdateTagVersion = UpdateTagVersion.Substring(0, EndIndex);
string UpdateVersion;
if (UpdateTagVersion.ToLower().StartsWith("v"))
{
UpdateVersion = UpdateTagVersion.Substring(1);
}
else
{
UpdateVersion = UpdateTagVersion;
}
string[] UpdateSplit = UpdateVersion.Split('.');
string[] CurrentSplit = CurrentVersion.Split('.');
for (int i = 0; i < UpdateSplit.Length && i < CurrentSplit.Length; i++)
{
int UpdateValue, CurrentValue;
if (!int.TryParse(UpdateSplit[i], out UpdateValue) || !int.TryParse(CurrentSplit[i], out CurrentValue))
{
break;
}
else if (UpdateValue < CurrentValue)
{
break;
}
else if (UpdateValue > CurrentValue)
{
UpdateLink = "https://github.com/dlebansais/PgMessenger/releases/download/" + UpdateTagVersion + "/PgMessenger.exe";
break;
}
}
}
}
}
}
}
}
catch (Exception e)
{
Debug.Print(e.Message);
}
return(UpdateLink != null);
}