C# 中的继承 "must declare a body because it is not marked abstract, extern, or partial"

inheritance in C# "must declare a body because it is not marked abstract, extern, or partial"

我试图使用 class Account 作为父对象,使用 class Login 作为子对象。

这里是 Account 代码看起来像

 class Account
        {
            private string account;
            private string password;
            private string Email;

            public Account();
            public Account(string _account, string _password, string _Email)
            {
                this.setAcount(_account).setPassword(_password).setEmail(_Email);
            }

.......
}

这里是 Class Login

class Login : Account
    {
        private bool login_status ;
        private static int try_count ;

        public Login()
        {
            login_status = false;
            try_count = 0;
        }
......
}

但是弹出错误信息

error1 'team2.Account.Account()' must declare a body because it is not marked abstract, extern, or partial

这不是有效的声明:

public Account();

构造函数必须有主体:

public Account() { };