// Helper function for getting a list of all EXEs and DLLs in the current application folder
public static List <string> GetAssemblyFiles()
{
string[] exts = new string[2] {
"*.exe", "*.dll"
};
return(ApplicationUtility.GetAssemblyFiles(ApplicationUtility._applicationBinFolder, exts, SearchOption.AllDirectories));
}
// Helper function to read the response from a Url and return a version state machine
internal static async Task <VersionState> GetVersionFromSource(string pageSource)
{
// Create an instance of an HtmlAgilityPack Html document that we can load the Url response into
HtmlDocument updateDoc = new HtmlDocument();
// Create a default state machine of there being no new update
VersionState state = new VersionState()
{
IsNewVersion = false, Url = String.Empty, Version = string.Empty
};
//Load the page source into the HtmlAgilityPack document so that we can parse the DOM effectively
updateDoc.LoadHtml(pageSource);
// Find any 'H3' elements in the document
var pageH3s = updateDoc.DocumentNode.Descendants("h3");
if (pageH3s != null)
{
// The first one that has a 'Zip' file as its source, is our upgrade file
var firstZipLink = pageH3s.Select(h3 => h3.Descendants("a").FirstOrDefault(a => a.Attributes["href"] != null && a.Attributes["href"].Value != null && a.Attributes["href"].Value.ToLower().Contains(".zip"))).FirstOrDefault(item => item != null);
if (firstZipLink != null)
{
var linkVersion = firstZipLink.Attributes["data-version"];
//List<string> linkText = firstZipLink.InnerText.Split(' ').ToList();
if (linkVersion?.Value != null)
{
// Use the link text to get the version number
string webVersionInfo = linkVersion.Value;
// Get the current version number (note the process DOESN'T take into account revisions...)
string appVersionInfo = ApplicationUtility.BuildVersion();
// Create an appropriate state machine for this versions
ApplicationUtility.VersionState currentState = ApplicationUtility.CompareVersions(appVersionInfo, webVersionInfo);
// Alter the state machine based on whether the remote version is newer
if (currentState == ApplicationUtility.VersionState.WebIsNewer)
{
state.IsNewVersion = true;
state.Version = webVersionInfo;
state.Url = firstZipLink.Attributes["href"].Value;
}
}
}
}
// Clear up and close the HtmlAgilityPack document
updateDoc = null;
return(state);
}
// Helper function for getting a list of filename and version numbers of all assembly files (EXEs and DLLs) in the
// current application folder
public static List <string> GetApplicationComponentVersions()
{
List <string> stringList = new List <string>();
string[] exts = new string[2] {
"*.exe", "*.dll"
};
foreach (string assemblyFile in ApplicationUtility.GetAssemblyFiles(ApplicationUtility._applicationBinFolder, exts, SearchOption.AllDirectories))
{
FileVersionInfo versionInfo = FileVersionInfo.GetVersionInfo(assemblyFile);
if (!string.IsNullOrEmpty(versionInfo.Comments))
{
string str = string.Format("{0} ({1}) - version: {2}", (object)versionInfo.Comments, (object)versionInfo.InternalName, (object)versionInfo.FileVersion);
stringList.Add(str);
}
}
return(stringList);
}
// Helper function to determine if the current EXE has the focus
public static bool ApplicationIsActivated()
{
bool isApplicationActive = false;
// Find the window handle of the window the user currently has activated
IntPtr foregroundWindow = ApplicationUtility.GetForegroundWindow();
// If the user has a window active
if (foregroundWindow != IntPtr.Zero)
{
// Get the process Id of the application currently referencing this DLL
int id = Process.GetCurrentProcess().Id;
int processId;
// Get the process Id of the application that the user is currently interacting with
ApplicationUtility.GetWindowThreadProcessId(foregroundWindow, out processId);
// If Windows says the user is using our application, then it's active
isApplicationActive = processId == id;
}
return(isApplicationActive);
}
// Helper function to get the current version number (used by the version checker system)
// TODO: determine if this is un-necessarily duplicated
public static string BuildVersion()
{
return(ApplicationUtility.GetApplicationVersionNumber());
}
