C# UWP how to get the value of changed ComboBoxItem
<p>In my .xaml file I have my combo box as below: </p>

<p><code>&lt;ComboBox Name="CLengthCombo" SelectionChanged="ComboBox_SelectionChanged"&gt;
                &lt;ComboBoxItem Content="24"/&gt;
                &lt;ComboBoxItem Content="25"/&gt;
                &lt;ComboBoxItem Content="26" IsSelected="True"/&gt;
                &lt;ComboBoxItem Content="27"/&gt;
 &lt;/ComboBox&gt;
</code>
how can I implement my ComboBox_SelectionChanged event so that I can get the content of the comboBoxItem which is changed by user when application is running? Is SelectionChanged event the correct even to use in this case? The below does not work: </p>

<p><code>private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e) 
{ string chosenItem = CLengthCombo.PlaceholderText; }
</code> 
Thanks in advance for your help! </p>