//BACKUP
private void Form1FormClosing(object sender, FormClosingEventArgs e)
{
FileStream fs = new FileStream(cacheFile, FileMode.Create, FileAccess.Write, FileShare.None);
byte[] array;
//below simple methods converts all the cache objects into byte array
_cache.BackupCache(out array, true);
fs.Write(array, 0, array.Length);
fs.Close();
}
