How to make a app for add, delete list of persons

I would like to write a program that will handle commands like

add: And asks for your first name, surname, age list: List the people in a directory remove: removes detail: Displays the details of the person open: opens a file. (from json and xml) save: save the file (in json and xml)

I have written methods ... and I have been fighting for a couple of hours what's next.

class Person
{
    public int Id { get; set; }
    public string Name { get; set; }
}

class FileExample
{
    static void Main(string[] args)
    {

        while (true)
        {
            string choice = Console.ReadLine();
            switch (choice)
            {
                case "Add":
                    break;
                case "Update":
                    break;
                case "Remove":
                    break;
                case "Exit":
                    return;
            }
        }
    }

    static List LoadList()
    {
        string text = File.ReadAllText("persons.txt");
        if (string.IsNullOrEmpty(text))
            return new List() { };
        return JsonConvert.DeserializeObject(text).ToList();
    }
    static void SaveList(IEnumerable persons)
    {
        File.WriteAllText("persons.txt", JsonConvert.SerializeObject(persons.ToArray()));
    }
    static void AddPerson(List list, Person newPerson)
    {
        list.Add(newPerson);
    }
    static void RemovePerson(List list, int personId)
    {
        var foundPerson = list.FirstOrDefault(x => x.Id == personId);
        if (foundPerson != null)
            list.Remove(foundPerson);
    }
}

You can modify your code like:

List persons = new List();
while (true)
{
Console.WriteLine("Select Right Option From List:");
Console.WriteLine("Type 'Add' for new Person:");
Console.WriteLine("Type 'Update' to update existing person:");
Console.WriteLine("Type 'Remove' to remove existing person:");
Console.WriteLine("Type 'Exit' for Exit from Application:");
Console.Write("Enter Your Choice:");
string choice = Console.ReadLine();
switch (choice)
{
case "Add":
Console.Write("Enter Name: ");
string pName = Console.ReadLine();
Person p = new Person() { Id = 1, Name = pName };
Person.AddPerson(persons, p);
break;
case "Update":
break;
case "Remove":
break;
case "Exit":
Environment.Exit(0);
return;
}
}

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Muhammad Imran Ansari4y ago
You can modify your code like:
List persons = new List();
while (true)
{
    Console.WriteLine("Select Right Option From List:");
    Console.WriteLine("Type 'Add' for new Person:");
    Console.WriteLine("Type 'Update' to update existing person:");
    Console.WriteLine("Type 'Remove' to remove existing person:");
    Console.WriteLine("Type 'Exit' for Exit from Application:");
    Console.Write("Enter Your Choice:");
    string choice = Console.ReadLine();
    switch (choice)
    {
        case "Add":
            Console.Write("Enter Name: ");
            string pName = Console.ReadLine();
            Person p = new Person() { Id = 1, Name = pName };
            Person.AddPerson(persons, p);
            break;
        case "Update":
            break;
        case "Remove":
            break;
        case "Exit":
            Environment.Exit(0);
            return;
    }
}
0