CODEWITHSUNDEEP
c#asp.netarrayslistmultidimensional-array
MosesIAmnt
MosesIAmnt

Reputation: 55

Should I be using lists?

So at the moment I have a multidimensional array

string[,] items = new string[100, 4];

I then gather the needed inputs to put them into the array, and then display them in a listbox

items[itemcount, 0] = id;
items[itemcount, 1] = newprice;
items[itemcount, 2] = quant;
items[itemcount, 3] = desc;

listBox1.Items.Add(items[itemcount, 0] + "\t" + items[itemcount, 3] + "\t " + items[itemcount, 2] + "\t " + items[itemcount, 1]);
listBox1.SelectedIndex = listBox1.Items.Count - 1;

So then the user can if they want select an item from the listbox to delete that item. When it came to deleting an item I realized that an array is not suitable. So should I create 4 different lists and use the list.Remove method to delete them or is there a better way that I dont have to work on 4 different things, also the user is running an older computer with WinXP would i have to worry about performance with 4 different lists? Is there anything such as a multidimensional list?

Thanks heaps for your help

Upvotes: 3

Views: 118

Answers (3)

tallseth
tallseth

Reputation: 3665

It looks like you have one complex type, that you should put into a list. Not sure if the names are right, but something like this looks like what you want.

public class InventoryEntry
{
    public string Id {get;set;}
    public double NewPrice {get;set;}
    public int Quantity {get;set;}
    public string Description {get;set;}

    public override ToString()
    { 
           //return your specially formatted string here
    }
}
var items = new List<InventoryEntry>();
//add some items
//add them to your listbox
//etc...

Upvotes: 2

Alexei Levenkov
Alexei Levenkov

Reputation: 100547

You are trying to reinvent List of instances of a class. Something like

class Item {
  public int Id {get;set;}
  public double Price {get;set;}
  public double Quantity {get;set;}
  public string Description {get;set;}
}

var myItems = new List<Item>();

Upvotes: 7

David East
David East

Reputation: 32604

With the amount of data you'll be working with you really shouldn't see any performance issues.

Any type of Collection whether it be a List<T>, Dictionary<T, T>, IEnumerable<T>, or whatever you want to use, it will provide you with more functionality than an array will.

Upvotes: 3

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