public static async Task SaveTimetable(Timetable timetable)
{
try
{
var timetableDirectory = await GetTimetableDirectory();
var timetableFile = await timetableDirectory.CreateFileAsync(timetable.FileName, CreationCollisionOption.OpenIfExists);
try
{
var backupFile = await timetableDirectory.CreateFileAsync(timetable.FileName + backupExtension, CreationCollisionOption.OpenIfExists);
await timetableFile.CopyAndReplaceAsync(backupFile);
timetableFile = await timetableDirectory.CreateFileAsync(timetable.FileName, CreationCollisionOption.ReplaceExisting);
}
catch (Exception e)
{
if (System.Diagnostics.Debugger.IsAttached)
System.Diagnostics.Debugger.Break();
throw new Exception(Strings.TimetableSaveToFileBackupException, e);
}
//XML-Generieren
string xml;
try
{
var appVersion = Package.Current.Id.Version.Major + "." + Package.Current.Id.Version.Minor;
xml = timetable.WriteXml(appVersion);
}
catch (Exception e)
{
if (System.Diagnostics.Debugger.IsAttached)
System.Diagnostics.Debugger.Break();
throw new Exception(Strings.TimetableSaveFileInnerXmlException, e);
}
//Alles in die Datei schreiben
try
{
using (var stream = await timetableFile.OpenStreamForWriteAsync())
using (StreamWriter streamWriter = new StreamWriter(stream))
{
streamWriter.Write(xml);
}
}
catch (Exception e)
{
if (System.Diagnostics.Debugger.IsAttached)
System.Diagnostics.Debugger.Break();
throw new Exception(Strings.TimetableSaveFileInnerSaveException, e);
}
using (var stream = await (await (await GetTimetableDirectory()).CreateFileAsync(currentTimetableFileName, CreationCollisionOption.ReplaceExisting))
.OpenStreamForWriteAsync())
using (var writer = new StreamWriter(stream))
{
writer.Write(timetable.FileName);
}
}
catch (Exception error)
{
//Worst Case Situation
ComposeErrorReport(String.Format(Strings.LoadSaveSaveErrorFormat, error.Message), error, error.InnerException);
}
}
