How to binding combobox to tooltip wpf
<p>I have a problem when trying binding from combobox to tooltip. I want to bind SelectedValue to tooltip and add a string before SelectedValue on tooltip.
EX: SelectedValue: ID_001. Tooltip = Your ID: ID_001.
My xaml:</p>

<pre><code>&lt;ComboBox ToolTip="{Binding ElementName=cbb_ma_kh, Path=SelectedValue}"  
          Height="32" 
          Margin="115,39,24,0" 
          Name="cbb_ma_kh" 
          VerticalAlignment="Top" 
          Grid.ColumnSpan="2" /&gt;
</code></pre>

<p>Thanks so much</p>