public bool FileTryDecrypt()
{
if (dsTmp != null)
{
try
{
EncryptionHelper.Instance.Password = this.Password;
StringReader reader = new StringReader(EncryptionHelper.Instance.Decrypt(dsTmp.Setup[0].EncryptedData));
MoneyDataSet dsTry = new MoneyDataSet();
dsTry.ReadXml(reader);
dsTmp = dsTry;
return true;
}
catch (CryptographicException ce)
{
Log.Write(ce);
return false;
}
}
else
{
return false;
}
}
public bool FilePreLoad()
{
// loading file to dsTmp, only basic checks are done
try
{
if (String.IsNullOrWhiteSpace(filename))
{
// looking up command line (first parameter is a datafile name)
String[] commandLine = Environment.GetCommandLineArgs();
if (commandLine.Count() > 1)
{
dataFilename = commandLine[1];
}
else
{
String folderName = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + Path.DirectorySeparatorChar +
Consts.Application.ProfileFolder;
// looking up for default data files
dataFilename = folderName + Path.DirectorySeparatorChar + Consts.Application.DefaultFileName;
if (!File.Exists(dataFilename))
{
dataFilename = folderName + Path.DirectorySeparatorChar + Consts.Application.XmlDataFileName;
}
String backupFileName = folderName + Path.DirectorySeparatorChar + String.Format(Consts.Application.BackupFileNameFormat, DateTime.Now);
// backup current file
if ((File.Exists(dataFilename)) && (!File.Exists(backupFileName)))
{
File.Copy(dataFilename, backupFileName);
}
// remove archives that are too old
foreach (String fileName in Directory.EnumerateFiles(folderName, Consts.Application.BackupFileSearchPattern))
{
if (File.GetLastWriteTime(fileName).AddDays(Parameters.KeepArchivesDays) < DateTime.Now)
{
File.Delete(fileName);
}
}
}
}
else
{
dataFilename = filename;
}
dsTmp = new MoneyDataSet();
if (File.Exists(dataFilename))
{
dsTmp.ReadXml(dataFilename);
}
return true;
}
catch (Exception e)
{
ErrorHelper.ShowErrorBox(ErrorHelper.Errors.ErrorReadingData, e);
return false;
}
}
