Solved

How to get select value from listbox / Silverligh4

Posted on 2010-09-14
7
485 Views
Last Modified: 2013-11-12
How  can I get the selected value from listbox.
I tried listBox1.SelectedItem, listBox1.SelectedValue, but it is not the right way.
Thanks.


 <ListBox Height="100" HorizontalAlignment="Left" Margin="21,266,0,0"      Name="listBox1" VerticalAlignment="Top" Width="556">
            <ListBoxItem Content="One" />
            <ListBoxItem Content="Two" />
            <ListBoxItem Content="Three" IsEnabled="False" />
        </ListBox>

 private void listBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var x = listBox1.SelectedItem;
            var y = listBox1.SelectedValue;
        }

0
Comment
Question by:Plexo
  • 2
  • 2
  • 2
  • +1
7 Comments
 
LVL 9

Expert Comment

by:TonyReba
ID: 33678764
What Error is it giving? What is displayed?
0
 
LVL 10

Expert Comment

by:joriszwaenepoel
ID: 33679364
I'm not sure, but maybe this could work:

var x = DirectCast(listBox1.SelectedItem, ListBoxItem).Content.ToString();
0
 
LVL 29

Expert Comment

by:Gautham Janardhan
ID: 33679994
see a sample to for the WPF list box.
as far as possible everything should be done using bindings in WPF/Silverlight.
<ListBox ItemsSource="{Binding ListBoxItems}" SelectedItem="{Binding SelectedItem}" SelectionChanged="ListBox_SelectionChanged">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Content}"/>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

// code behind

public partial class Window2 : Window
    {
        DataContext context;
        public Window2()
        {
            InitializeComponent();
            context = new DataContext();
            this.DataContext = context;
        }

        private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            MessageBox.Show("Selected item is : " + context.SelectedItem.Content);
        }
    }

    public class DataContext
    {
        public ObservableCollection<Item> ListBoxItems { get; set; }
        public Item SelectedItem { get; set; }
        public DataContext()
        {
            ListBoxItems = new ObservableCollection<Item>();
            ListBoxItems.Add(new Item()
            {
                Content = "Test 1"
            });

            ListBoxItems.Add(new Item()
            {
                Content = "Test 2"
            });

            ListBoxItems.Add(new Item()
            {
                Content = "Test 3"
            });

            ListBoxItems.Add(new Item()
            {
                Content = "Test 4"
            });
        }
    }

    public class Item
    {
        public string Content { get; set; }
    }

Open in new window

0
Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

 

Author Comment

by:Plexo
ID: 33683929
Hi TonyReba
There's no mistake, I just can not get the contents.
Thanks.
0
 

Author Comment

by:Plexo
ID: 33683988
Hi joriszwaenepoel

var x = DirectCast(listBox1.SelectedItem, ListBoxItem).Content.ToString();
I used your code and I had the following error:

Error      1      The name 'DirectCast' does not exist in the current context
Error      2      'System.Windows.Controls.ListBoxItem' is a 'type' but is used like a 'variable'
0
 
LVL 9

Expert Comment

by:TonyReba
ID: 33684466
I'm not too good on c# but try, .        

Dim x as listboxitem = ctype (listbox1.selectedvalue, listboxitem).tostring()

 Then use x as your variable.

Note Google telerik code converter if u need convert to c #  this is vb                          
0
 
LVL 29

Accepted Solution

by:
Gautham Janardhan earned 500 total points
ID: 33685100
in C# that would be

((ListBoxItem)listBox1.SelectedItem).Content.Tostring()
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…

816 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now