Question

我目前在编辑列表中存储的现有用户名和密码时遇到问题。

声明：

public static Administrator Cadmin = new Administrator("", "", "", "");
public static Staff Cstaff = new Staff("", "", "", "");
public static Administrator Ladmin = new Administrator("", "", "", "");
public static Staff Lstaff = new Staff("", "", "", "");
public static string NCName;
public static string NCPassword;
List<User> UserList = new List<User>();

执行代码：

Console.WriteLine("Which user would you like to edit?");
string ruser = Console.ReadLine();

bool Ustop = false;
while (!Ustop)
{
    foreach (User u in UserList)
    {
        if (ruser == Cadmin.CName)
        {
            Console.WriteLine("Please key in the existing password of the selected username");
            string epass = Console.ReadLine();

            if (epass == Cadmin.CPassword)
            {
                Console.WriteLine("Create new Administrator Username:");
                NCName = Console.ReadLine();

                Console.WriteLine("\nCreate new Administrator Password: ");
                NCPassword = Console.ReadLine();


                ruser.Replace(ruser, NCName);
                epass.Replace(epass, NCPassword);
            }
            else
            {
                Console.WriteLine("Password that you key in is invalid!");
            }
        }
        else
        {
            Console.WriteLine("Username that you key in did not exist!");
            Console.WriteLine("Please key in a valid username");
        }
    }
}

Answer 1

我了解到您在将数据存储到当前填充的列表中时遇到问题，因此这是一种解决方案，如果foreach则用于，然后可以使用列表的索引来编辑列表的特定成员（我认为CAdmin是从User和User类继承的属性具有CName和CPassword的属性）：

bool Ustop = false;
while (!Ustop)
{
    for (var i = 0; i< UserList.Count ; i++ )
    {
        User u = UserList[i];
        if (ruser == u.CName)
        {
            Console.WriteLine("Please key in the existing password of the selected username");
            string epass = Console.ReadLine();

            if (epass == u.CPassword)
            {
                Console.WriteLine("Create new Administrator Username:");
                NCName = Console.ReadLine();

                Console.WriteLine("\nCreate new Administrator Password: ");
                NCPassword = Console.ReadLine();


                u.CName = NCName;
                u.CPassword = NCPassword;
            }
            else
            {
                Console.WriteLine("Password that you key in is invalid!");
            }
        }
        else
        {
            Console.WriteLine("Username that you key in did not exist!");
            Console.WriteLine("Please key in a valid username");
        }
    }
}

如何替换列表中的现有用户名和密码？

1 个答案: