Event handler can't be found in MVVM
<p>I have a silverlight application. One of StackPanel will display the table. The first column is a check box. </p>

<pre><code>&lt;telerik:RadGridView.Columns&gt;
                &lt;telerik:GridViewColumn Width="80" Header="Complete" HeaderTextAlignment="Center" TextAlignment="Center"&gt;
                    &lt;telerik:GridViewColumn.CellTemplate&gt;
                        &lt;DataTemplate&gt;
                            &lt;CheckBox HorizontalAlignment="Center" IsChecked="{Binding Something, Converter={StaticResource ShortToBooleanConverter}}" Checked="Complete_Checked"&gt;&lt;/CheckBox&gt;
                        &lt;/DataTemplate&gt;
                    &lt;/telerik:GridViewColumn.CellTemplate&gt;
                &lt;/telerik:GridViewColumn&gt;
</code></pre>

<p>What I want is that once I click the box, a message box with Y/N pops up. I do have a <code>Complete_Checked</code> method in MVVM. But I get the error </p>

<blockquote>
  <p>Event handler 'Complete_Checked` not found on class.....</p>
</blockquote>