private void AddUserToDatabase(UserDatabase database, string content)
{
//元数据content = username|password|nickname|gender|age|email|
//可能的错误：信息中带有“|”
string[] tokens = content.Split(new char[] { '|' });
ServerUser newUser = new ServerUser()
{
UserName = tokens[0],
Password = tokens[1],
NickName = tokens[2],
Gender = (GenderOption)Enum.Parse(typeof(GenderOption), tokens[3]),
Age = int.Parse(tokens[4]),
Email = tokens[5]
};
database.AddUser(newUser);
}