& lt; DataGridComboBoxColumn Header="special requirements" x: Name="cbo_Special" Width="2 *"/& gt; 

DataGridComboBoxColumn column is set in the DataGrid, binding the drop-down list data

 DataTable dt1=myClient. Button_Click_SelectSpecial (). The Tables [0]; 
Cbo_Special. ItemsSource=dt1. DefaultView; 
Cbo_Special. DisplayMemberPath="SpecialName"; 
Cbo_Special. SelectedValuePath="SpecialID"; 

Want to get it selected values, how to get