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Trying To Understand Indexers
Message
General information
Forum:
ASP.NET
Category:
Coding, syntax and commands
Miscellaneous
Thread ID:
01433919
Message ID:
01434405
Views:
48
Hi,
Sorry, that makes no sense to me. Can you explain more how you envisage that working?

>I think I may havee a good use for an indexer:
>
>Assume I create a Customer class. It has a RecordKey property and a LoadData method. If Recordkey is set to a key value and LoadData is called, then the class is loaded for that customer.
>
>If Recordkey is set to a 0 and LoadData is called, then the class's indexer is used to load all customers.
>
>Anyone?
>
>
>
>>Does this help? http://stackoverflow.com/questions/609594/what-is-the-use-of-indexers
>>
>>>I have this customer class:
>public class Customer
>>>{
>>>    private List<Invoice> _Invoices = new List<Invoice>();
>>>    public Invoice this[int item]
>>>    {
>>>        get
>>>        {
>>>            return _Invoices[item];
>>>        }
>>>        set
>>>        {
>>>            _Invoices[item] = value;
>>>        }
>>>    }
>>>}
>I then do this:
>static void Main(string[] args)
>>>{
>>>    Invoice InvA = new Invoice();
>>>    InvA.InvoiceId = "A0001";
>>>
>>>    Invoice InvB = new Invoice();
>>>    InvB.InvoiceId = "B0002";
>>>
>>>    Customer cust = new Customer();
>>>    cust[0] = InvA;
>>>    cust[1] = InvB;
>>>}>
>I'm not really seeing a usage for indexers. It seems to me that an Invoices collection would be better. What's the point of indexers?
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