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POGet all selected items in ListBox (including duplicates)
 

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  1. POGet all selected items in ListBox (including duplicates)
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    <p>I have a ListBox that contains duplicate items. From what I gather, <code>ListBox.SelectedItems</code> will only return the first instance of a duplicate, but this causes problems when I want to perform an action on all items a user has selected. When I select multiple duplicates and call <code>ListBox.SelectedItems.Count</code>, I always get <code>1</code>. Is there a way to get the indexes of all items, regardless if they're unique or not? (ListBox mode is set to Multiple).</p> <p>Added repro code demonstrating that the same item is considered a duplicate.</p> <p>Xaml:</p> <pre><code>&lt;Grid x:Name="LayoutRoot" Background="White"&gt; &lt;ListBox Height="288" HorizontalAlignment="Left" Margin="12,0,0,0" Name="listBox1" VerticalAlignment="Top" Width="276" SelectionMode="Multiple" /&gt; &lt;Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="313,12,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" /&gt; &lt;/Grid&gt; </code></pre> <p>code:</p> <pre><code>ObservableCollection&lt;string&gt; fruits = new ObservableCollection&lt;string&gt;(); fruits.Add("Apple"); fruits.Add("Pear"); fruits.Add("Orange"); fruits.Add("Apple"); listBox1.ItemsSource = fruits ; </code></pre> <p>I just wired up a button event to this:</p> <pre><code>MessageBox.Show(listBox1.SelectedItems.Count.ToString()); </code></pre> <p>Select the top <code>Apple</code> and click the button, it will return <code>1</code>. Select both <code>Apples</code> and it will return <code>1</code>. Select an <code>Apple</code> and <code>Pear</code>, it will return <code>2</code>.</p>
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    1. COListBox.GetSelectedIndices() possibly?
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    2. COThanks, but that method doesn't exist in Silverlight. My post was edited to include the 'asp.net' tag, but this is not asp.net.
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    3. COAh, I didn't know that about silverlight. I was looking at the C# tag. Try this: http://stackoverflow.com/questions/3836313/getting-the-index-of-multiple-selected-items-in-a-listbox-using-silverlight
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