How do i sort my listview alphabetically?

Question

So i have this listview, and i want to make it alphabetically sorting. do someone know if you can do it? and if you know how you can do it, then show me the code. LOOKING FOR HELP!!

this is my Xaml.cs code:

namespace App2
{
public partial class MainPage : ContentPage
{
    List<Kontakter> kontakter = new List<Kontakter>
    {
        new Kontakter
        {
        Fuldenavn = "Name One (NO)",
        Tlfnr = 12345678
        },
        new Kontakter
        {
            Fuldenavn = "Another Name (AN)",
            Tlfnr = 23456789
        },
        new Kontakter
        {
            Fuldenavn = "Third Name (TN)",
            Tlfnr = 34567890
        },
        new Kontakter
        {
            Fuldenavn = "Yet Another (YA)",
            Tlfnr = 45678901
        }
    };

    public MainPage()
    {
        InitializeComponent();

        NameslistView.ItemsSource = kontakter;
    }

    private void MainSearchBar_SearchButtonPressed(object sender, EventArgs e)
    {
        var keyword = MainSearchBar.Text;
        NameslistView.ItemsSource = kontakter.Where(obj => (obj.Fuldenavn.Contains(keyword) || obj.Tlfnr.ToString().Contains(keyword)));
    }
}
}

this is my Xmal code:

<ListView x:Name="NameslistView" HasUnevenRows="True">
    <ListView.ItemTemplate>
        <DataTemplate>
            <ViewCell>
                <Label Text="{Binding Fuldenavn}" />
                <Label Text="{Binding Tlfnr}" />
            </ViewCell>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

Hey Kristian F, look at this https://stackoverflow.com/questions/3309188/how-to-sort-a-listt-by-a-property-in-the-object — Danieboy, Aug 29 '17 at 09:53
Possible duplicate of [How to Sort a List by a property in the object](https://stackoverflow.com/questions/3309188/how-to-sort-a-listt-by-a-property-in-the-object) — The Bearded Llama, Aug 29 '17 at 10:42
`.orderBy(...).thenBy(...).thenBy(...).thenBy(...)` if you need to sort multiple. — s3c, Sep 06 '21 at 09:06

Mighty Badaboom · Accepted Answer · 2017-08-29T10:40:05.467

9

You could use the LINQ method OrderBy for this.

Sorts the elements of a sequence in ascending order according to a key.

var sorted = kontakter.OrderBy(x => x.Fuldenavn)
                      .ToList();

Have a read at 101 LINQ-Samples for more information.

EDIT

public MainPage()
{
    InitializeComponent();

    //Order the contacts
    var sorted = kontakter.OrderBy(x => x.Fuldenavn)
                          .ToList();

    //Set the ItemsSource with the ordered contacts
    NameslistView.ItemsSource = sorted;
}

edited Aug 29 '17 at 10:40

answered Aug 29 '17 at 09:56

Mighty Badaboom

6,067
5
34
51

@KristianF For example: `NameslistView.ItemsSource = sorted;` – Mighty Badaboom Aug 29 '17 at 10:32
I relly dont undestand what you mean. can you send the code how it shold be setuped? @Mighty Badaboom – Aug 29 '17 at 10:38
This worked for me. Thank you so much :D @Mighty Badaboom – Aug 29 '17 at 10:49
Your welcome. But I would realy like to know why someone downvoted this... – Mighty Badaboom Aug 29 '17 at 10:50
probably because there are 1000 other questions on SO about sorting in C# – Jason Aug 29 '17 at 13:42
@Jason Yes there are. But it does not make my answer wrong..however – Mighty Badaboom Aug 29 '17 at 13:44

score 1 · Answer 2 · answered Aug 29 '17 at 10:43

1

use Sort and provide condition

kontakter.Sort((x, y) => x.Fuldenavn[0].CompareTo(y.Fuldenavn[0]));

where [0] represent 1st letter of Fuldenavn so that it will be sorted by alphabetical order.

answered Aug 29 '17 at 10:43

Gagan S Patil

11
2

You don't have to write your own compare logic when LINQ's `OrderBy` is doing this for you. – Mighty Badaboom Aug 29 '17 at 10:51
ooh ok Thank you@MightyBadaboom . – Gagan S Patil Aug 29 '17 at 11:36

How do i sort my listview alphabetically?

2 Answers2