ListItems, Items and item

flapjack · April 12th, 2010, 02:54 PM

Hi Imar,

I'm a bit rusty on my coding so could you tell me what each of the above are. I'm working on p115 and am particularly puzzled as to what a ListItem item is.

Thanks Bill

Imar · April 12th, 2010, 03:02 PM

A ListItem is an item tthat appears in a List control.

List controls include the DropDownList, ListBox, BulletedList and others.

A ListItem is defined with this markup:

<asp:ListItem Text="Some Text" Value="Some Value" />

I don't have the book here right now so I can't check the context, but I think that "ListItem item" simply refers to thing / an item that is a ListItem.

Does this help?

Imar

flapjack · April 13th, 2010, 11:24 AM

Hi Imar,

Thanks for the reply. My understanding is...

A ListItem is an element which is part of an asp control and an item is more C# specific. The code snippet I'm looking at iterates through a loop to find ListItems in a check box and is as follows...

foreach (ListItem item in CheckboxList1.Items)
{
(if item.Selected == true)..........

Its basically the first line and its many referances to Item item Items that threw me. Is my understanding correct. Are there many other types of item? Therefore is it specifying an item of type ListItem?

Thanks again Bill

flapjack · April 13th, 2010, 01:10 PM

Sorry Imar,

I've sussed it now.

item is a local variable which holds a ListItem. It all falls into place now. Sorry for the confusion.

Bill

Imar · April 13th, 2010, 01:21 PM

Quote:

item is a local variable which holds a ListItem

Exactly. This would have worked as well:

foreach (ListItem whateverYouNameIt in CheckboxList1.Items)
{
(if whateverYouNameIt.Selected == true)..........

Imar