C#

File opened that is not a database file
file is encrypted or is not a database

public String getAppdata()
        {
            return CurrentUsers.GetValue("AppData").ToString();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            CurrentUsers = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders");
            String path = getAppdata() + "\\Mozilla\\Firefox\\Profiles";
            foreach (String s in Directory.GetDirectories(path))
                path = s;
            //return path;
            DBManager dbm = new DBManager();
            dbm.Connect(path+ "\\places.sqlite");
            dbm.deleteTable("moz_historyvisits");
        }

public void Connect(String DatabaseName)
        {
            db = new SQLiteConnection("Data Source=" + DatabaseName);
            db.Open();
        }
        public void deleteTable(String TableName)
        {
            cmd = new SQLiteCommand("", db);
            cmd.CommandText = "delete from " + TableName;
            cmd.ExecuteNonQuery();
        }