Can Array Lists Store a collection of arrays?

Edward Aymami

7y1k

I am trying to create a data class that retrieves records from a SQL database. I would like to be able to retrieve the array list data from multiple other forms and reports. Each record can have as many as 32 items of various data types.

For example the Sales line detail records for one invoice. The number of data items and types is fixed. The number of records for any given invoice could range from 1 to 125, or possibly more.

I am fairly new to C# and have avoided Array Lists till now, mostly due to Microsoft's riduclous and hoplessly confused help files on this topic. I am working with windows forms desktop application. Any help on this Subject would be greatly appreciated.

3 Replies

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Jignesh Kumar6y ago
Hey Edwards,

You can create one model wich containd different list of your models. If you are aware of your data belongs to with model then you can create one model which contains all list of model. like below
public class MainModel
    {
        List invoiceDetails { get; set; }
        List saleDetails { get; set; }
    }

    public class InvoiceModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }
    public class SalesModel
    {
        public int Id { get; set; }
        public int saleQty { get; set; }
        public int saleDate { get; set; }

    }
0
Priyanka K S6y ago
1. public static void Main(String[] args)
2. {
3. ArrayList l1 = new ArrayList();
4. l1.Add("1");
5. l1.Add("yes");
7. ArrayList l2 = new ArrayList();
8. l2.Add("ok");
9. l2.Add("4");
10. l2.Add("5");
12. ArrayList arrayOfList = new ArrayList();
13. arrayOfList.Add(l1);
14. arrayOfList.Add(l2);
16. foreach (var arrayItem in arrayOfList)
17. {
18. IList collection = (IList)arrayItem;
19. foreach (var item in collection)
20. {
21. Console.WriteLine(item);
22. }
23. }
25. }
yes you can add any type of value. above code may help you. Thanks
0

Siddhartha Sharma7y ago

Hey , arraylist can have any type of object. So you can save list of Array in the arraylist. But while retrieving values from arraylist, you have to typecast the values. Let me know if you need more help .