How to group items in a list by their first letter in Silverlight?

Question

I have a ListBox to which I have linked a sorted list of strings. I would like to display a list with separators (headers) that will announce a new letter - something like the Contacts list on the iPhone.

Does anyone know how to achieve this? Perhaps using a ListBox is not a good idea.

I am doing this with VS Express 2010 for Windows Phone 7.

Answer 1

I can’t talk about Silverlight, but the general .NET practice will be as follows:

var groupings = mySortedString.GroupBy(x => x.Substring(0,1));

This means that IEnumerable<IGrouping<string, string>>you would attach this list to your list.

XAML, , .

: IGrouping<,> IEnumerable<>, .

Answer 2

, .

Answer 3

Windows Phone.

. LongListSelector.

Mo control, mo controls, mo controls... [ Silverlight Windows Phone Toolkit!] - Delay

Answer 4

SilverLight WP7 Toolkit LongListSelector . , , ... , , , ! , , . , , .

http://nicholasrogoff.wordpress.com/2011/01/28/creating-an-easy-grouped-observablecollection-for-the-longlistselector/