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How to get select value from listbox / Silverligh4

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;
}

TonyReba

What Error is it giving? What is displayed?

joriszwaenepoel

I'm not sure, but maybe this could work:

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

Gautham Janardhan

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; }
    }

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Plexo

ASKER

Hi TonyReba
There's no mistake, I just can not get the contents.
Thanks.

Plexo

ASKER

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'

TonyReba

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

ASKER CERTIFIED SOLUTION

Gautham Janardhan

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