Automatically Sort ListBox Items (A to Z or 1 to 9 serial wise)

Question

I have a ListBox on my WP 8.1 Silverlight app that looks like this:

<StackPanel Grid.Column="1" Grid.Row="0" HorizontalAlignment="Center" VerticalAlignment="Top">                
    <ListBox x:Name="FavoriteListBox" Visibility="Collapsed" 
             SelectionChanged="FavoriteListBox_SelectionChanged"
             HorizontalAlignment="Stretch"
             VerticalAlignment="Top" Opacity="1"
             Background="{StaticResource PhoneBackgroundBrush}" Foreground="{StaticResource PhoneForegroundBrush}"
             Height="300" Width="250">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <TextBlock Visibility="Visible" x:Name="FavoriteListBoxTextBlock"  
                       FontSize="35" Foreground="Black" Text="{Binding AnswerName}"/>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>
</StackPanel>

In my ListBox the items should look like this:

item1
item2
to 15.....

However currently it is not in the order of 1,2,3,4... Instead it is in order of when the item is added.

I want the ListBox items to serialize automatically. How can this be achieved?

score 2 · Accepted Answer · answered Nov 22 '16 at 08:10

2

If you want to sort a list or array before serializing, you can use two different solutions.

Arrays have a static Array.Sort method, that sorts the items of the array in-place (sorts the contents of the instance itself).

For lists and other collections you can use LINQ's OrderBy extension method.

var sortedList = list.OrderBy( 
    item => item.PropertyToOrderBy )
    .ToList();

Note, that the original list is left intact, the result of the ToList() extension method is a new instance.

answered Nov 22 '16 at 08:10

Martin Zikmund

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can you provide ore details – Shubham Sahu Nov 22 '16 at 12:47
i am work with listbox first time so please provide in details, how to do that – Shubham Sahu Nov 22 '16 at 13:28
1

Basically it is not related to the listbox itself, because you have to sort the data which are displayed in the listbox. The code I have posted you can use befor you serialize the data so that they are stored in the file in sorted order. And if you put the data from the sortedList in listbox, they will be sorted in the UI as well. – Martin Zikmund Nov 23 '16 at 22:42
list - the name 'list' does no exist in current context – Shubham Sahu Nov 26 '16 at 05:37
List is just a name of the variable containing you data. If you post the code, I could tell you which is the right one – Martin Zikmund Nov 26 '16 at 07:21
http://stackoverflow.com/questions/40627267/no-repetition-of-values-in-list-c this question containts whole code releated to list box – Shubham Sahu Nov 26 '16 at 14:33
In that case just replace list by listobj :-) – Martin Zikmund Nov 26 '16 at 14:34
it show an error show in this two images https://1drv.ms/f/s!Ahppl6XCmlXfkaRTpGSXsMSRn8rjkA – Shubham Sahu Nov 26 '16 at 14:50
Yes, you also need to replace the PropertyToOrderBy by AnswerName – Martin Zikmund Nov 26 '16 at 14:53
You have to use the sortedList variable - or you can just replace "var sortedList" with "listobj" in my code – Martin Zikmund Nov 26 '16 at 15:00
I will have to see the screen shots with the error message again – Martin Zikmund Nov 26 '16 at 15:08
I don't understand, we haven't changed anything to do with favorites. Apparently you need to mark the _favorites field as static, but I don't understand how It could have worked before – Martin Zikmund Nov 26 '16 at 15:27
If you could update your question or post a new question with all the code that you now have, it would help, otherwise I don't really understand what is going on... :-( – Martin Zikmund Nov 26 '16 at 15:36
okay i am also very confused, i will post new question.. : |! ,Thank you for taking the time to my question – Shubham Sahu Nov 26 '16 at 15:40

Automatically Sort ListBox Items (A to Z or 1 to 9 serial wise)

1 Answers1