How to delete an item from a generic list

Question

I have a generic list

How do I remove an item?

EX:

Class Student
{
    private number;
    public Number
    {
        get( return number;)
          


        

Answer 1

I made a program that contains 7 cards, then shuffle and I hope to take in order to help them

class Program
{

    static void Main(string[] args)
    {
        Random random = new Random(); 
        var cards = new List<string>();
        //CARDS VECRTOR
        String[] listas = new String[] { "Card 1", "Card 2", "Card 3", "Card 4", "Card 5", "Card 6", "Card 7"};


        for (int i = 0; i<= cards.Count; i++)
        {

            int number = random.Next(0, 7); //Random number 0--->7


            for (int j = 0; j <=6; j++)
            {
                if (cards.Contains(listas[number])) // NO REPEAT SHUFFLE
                {

                    number = random.Next(0, 7); //AGAIN RANDOM

                }
                else
                {
                    cards.Add(listas[number]); //ADD CARD
                }
            }

        }

        Console.WriteLine(" LIST CARDS");

        foreach (var card in cards)
        {
            Console.Write(card + " ,");


        }

        Console.WriteLine("Total Cards: "+cards.Count);

        //REMOVE

        for (int k = 0; k <=6; k++)
        {
           // salmons.RemoveAt(k);
            Console.WriteLine("I take the card: "+cards.ElementAt(k));
            cards.RemoveAt(k); //REMOVE CARD
            cards.Insert(k,"Card Taken"); //REPLACE INDEX
            foreach (var card in cards)
            {
                Console.Write(card + " " + "\n");

            }


        }


        Console.Read(); //just pause

    }



}

Answer 2

Well, there is nothing to remove because your list is empty (you also didn't give it an identifier, so your code won't compile). You can use the Remove(T item) or RemoveAt(int index) to remove an object or the object at a specified index respectively (once it actually contains something).

Contrived code sample:

void Main(...)
{
    var list = new List<Student>();
    Student s = new Student(...);
    list.Add(s);

    list.Remove(s); //removes 's' if it is in the list based on the result of the .Equals method

    list.RemoveAt(0); //removes the item at index 0, use the first example if possible/appropriate
}

Answer 3

int count=queue.Count;

        while(count>0)
        {
            HttpQueueItem item = queue[0];
            /// If post succeeded..
            if (snd.IsNotExceedsAcceptedLeadsPerDayLimit(item.DataSaleID, item.AcceptedLeadsPerDayLimit) && snd.PostRecord(item.DataSaleDetailID, item.PostString, item.duplicateCheckHours, item.Username, item.Password, item.successRegex))
            {
                if (item.WaitTime > 0)
                    Thread.Sleep(item.WaitTime);
                queue.Remove(item);
            }
                ///If Exceeds Accepted leads per day limit by DataSale..
            else if (!snd.IsNotExceedsAcceptedLeadsPerDayLimit(item.DataSaleID, item.AcceptedLeadsPerDayLimit))
            {
                queue.RemoveAll(obj => obj.DataSaleID == item.DataSaleID);
            }
                /// If Post failed..
            else //if (!snd.PostRecord(item.DataSaleDetailID, item.PostString, item.duplicateCheckHours, item.Username, item.Password, item.successRegex))
            {
                queue.Remove(item);
            }
            count = queue.Count;
        }