非バインド列

<!-- 開始 UserControl タグに ValueConverter の名前空間宣言を追加します。 -- >
xmlns:helper="clr-namespace:xamSamples_XAML"
<!--コンバーターのリソースを追加します。 -->
<UserControl.Resources>
   <helper:TotalUnitsConverter x:Key="TotalUnitsConverter"/>
</UserControl.Resources>
<Grid x:Name="LayoutRoot" Background="White">
   <ig:XamGrid Grid.Row="0" x:Name="MyDataGrid"
   AutoGenerateColumns="False" ColumnWidth="*">
      <ig:XamGrid.Columns>
         <ig:TextColumn Key="ProductID"/>
         <ig:TextColumn Key="ProductName"/>
         <ig:TextColumn Key="QuantityPerUnit"/>
         <ig:TextColumn Key="UnitPrice"/>
         <ig:TextColumn Key="UnitsInStock"/>
         <ig:TextColumn Key="UnitsOnOrder"/>
         <ig:TextColumn Key="ReorderLevel"/>
         <ig:TextColumn Key="Discontinued"/>
         <!--非バインド列を作成し、ValueConverter にフックアップします。 -->
         <ig:UnboundColumn Key="Total Units" ValueConverter="{StaticResource TotalUnitsConverter}"/>
      </ig:XamGrid.Columns>
   </ig:XamGrid>
</Grid>

Dim MyColumn As New UnboundColumn()
MyColumn.Key = "Total Units"
MyColumn.ValueConverter = New TotalUnitsConverter()
Me.MyDataGrid.Columns.Add(MyColumn)

this.MyDataGrid.Columns.Add(new UnboundColumn() {Key = "Total Units", ValueConverter = new TotalUnitsConverter()});

Public Class TotalUnitsConverter
    Implements IValueConverter
    Public Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object
        Dim p As NorthwindServiceReference.Product = CType(value, NorthwindServiceReference.Product)
        If (Not (p) Is Nothing) Then
            Return (p.UnitsInStock + p.UnitsOnOrder)
        End If
        Return Nothing
    End Function
    Public Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object
        Throw New NotImplementedException
    End Function
End Class

public class TotalUnitsConverter : IValueConverter
{
   public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
   {
      NorthwindServiceReference.Product p = value as NorthwindServiceReference.Product;
      if (p != null)
      {
         return p.UnitsInStock + p.UnitsOnOrder;
      }
      return null;
   }
   public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
   {
      throw new NotImplementedException();
   }
}