private void WindowLoaded(object sender, EventArgs e)
{
//Please refer to the following blogpost to learn how you can use the method "IsRunningAsUWP" to detect whether or not you are running as a packged app or not:
//https://blogs.msdn.microsoft.com/appconsult/2016/11/03/desktop-bridge-identify-the-applications-context/
if (ExecutionMode.IsRunningAsUwp())
{
this.Title = "Desktop Bridge App: PhotoStore --- (Windows App Package)";
this.TitleSpan.Foreground = Brushes.Blue;
//Detect if the previous version of the Desktop App is installed
//The location of the uninstaller in the registry depends on the app's architecture and installer technology. This is different for every app.
String uninstallString = (String)Microsoft.Win32.Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{7AD02FB8-B85E-44BC-8998-F4803BA5A0E3}\", "UninstallString", null);
//Detect if there is previous user data
//In this example, the previous user data lives under the "unpackaged" local app data location
String sourceDir = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + "\\PreviousPhotoStore";
bool isDataToMigrate = false;
if (Directory.Exists(sourceDir))
{
var list = Directory.EnumerateFiles(sourceDir);
if (list.Count() == 0)
{
isDataToMigrate = false;
}
else
{
isDataToMigrate = true;
}
}
//Prepare the message for the dialog box to be shown to the user, depending on whether any of the following actions are requried: data migration, uninstallation, or both
String userMessage = "";
if (isDataToMigrate && uninstallString != null)
{
userMessage = "We need to migrate your old data and uninstall the previous version of this app. Would you like to go ahead right now?";
}
else if (isDataToMigrate && uninstallString == null)
{
userMessage = "We need to migrate your old data. Would you like to go ahead right now?";
}
else if (!isDataToMigrate && uninstallString != null)
{
userMessage = "We need to uninstall the previous version of this app. Would you like to go ahead right now?";
}
if (isDataToMigrate || uninstallString != null)
{
MessageBoxResult messageResult = MessageBox.Show(userMessage, "Migration in progress...", MessageBoxButton.YesNo);
if (messageResult.Equals(MessageBoxResult.Yes))
{
//Migrate user data (if required)
if (Directory.Exists(sourceDir))
{
//Obtain the path (String) to the "packaged" location, where the previous data will be migrated TO.
String destinationDir = Windows.Storage.ApplicationData.Current.LocalFolder.Path;
//If you are moving data from one of the redirected folders, you need to use robocopy.exe to bypass redirection. This is the only time you should bypass redirection
//Redirected folders: https://docs.microsoft.com/en-us/windows/uwp/porting/desktop-to-uwp-behind-the-scenes
//Robocopy.exe: https://technet.microsoft.com/en-us/library/cc733145(v=ws.11
//Otherwise, you should move files using System.IO
//Note: The "/move" flag is used to copy data over AND delete previous data in one operation
if (RunProcess("robocopy.exe", sourceDir + " " + destinationDir + " /move") > 1)
{
//Migration was unsuccessful -- App Developer can choose to block/retry/other action
}
}
//Uninstall previous version
if (uninstallString != null)
{
//In this case, the uninstaller takes additional arguments.
//Since the uninstallString is app-specific, make sure your call to the uninstaller is properly formatted before calling create process
string[] uninstallArgs = uninstallString.Split(' ');
if (RunProcess(uninstallArgs[0], uninstallArgs[1]) != 0)
{
//Uninstallation was unsuccessful - App Developer can choose to block the app here
}
}
}
}
}
else
{
this.Title = "Desktop App";
this.TitleSpan.Foreground = Brushes.Navy;
}
var layer = AdornerLayer.GetAdornerLayer(CurrentPhoto);
_cropSelector = new RubberbandAdorner(CurrentPhoto)
{
Window = this
};
layer.Add(_cropSelector);
#if VISUALCHILD
CropSelector.Rubberband.Visibility = Visibility.Hidden;
#endif
#if NoVISUALCHILD
CropSelector.ShowRect = false;
#endif
Photos = (PhotoList)(this.Resources["Photos"] as ObjectDataProvider)?.Data;
Photos.Init(PhotosFolder.Current);
ShoppingCart = (PrintList)(this.Resources["ShoppingCart"] as ObjectDataProvider)?.Data;
}