InitializeRecord not firing after DataSource assigned

Ok, I see it working now however what I have is a hierarchy grid and I'm trying to port some Winforms code over to WPF. In Winforms I have InitializeRow which I believe fires once for each parent row. I have access to the row and the child rows. I want this in WPF as InitliazeRecord seems to fire a lot eg/on databinding and heirarchy expansion. Is there a similar event so when the databinding occurs a similar event fires once that gives me the access to row and child rows.

I have something similar to the below:

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Infragistics.Windows.DataPresenter;
using Infragistics.Windows.Controls;
using System.Windows.Automation;
using System.Collections.ObjectModel;

namespace datagridfieldsettings
{
///

/// Interaction logic for MainWindow.xaml
///
public partial class MainWindow : Window
{
public DataSet dsDataSet = new DataSet();

public MainWindow()
{

InitializeComponent();

  DataTable dtCustomer = new DataTable();
  dtCustomer.Columns.Add(new DataColumn("Id"));
  dtCustomer.Columns.Add(new DataColumn("Name"));

  DataTable dtOrders = new DataTable();
  dtOrders.Columns.Add(new DataColumn("Id"));
  dtOrders.Columns.Add(new DataColumn("CustomerID"));
  dtOrders.Columns.Add(new DataColumn("OrderTotal"));

dsDataSet.Tables.Add(dtCustomer);
dsDataSet.Tables.Add(dtOrders);

  for (int i = 0; i < 5;i++ )
  {
      DataRow row = dtCustomer.NewRow();
      row["Id"] = i;
      row["Name"] = "John Smith";
      dtCustomer.Rows.Add(row);

      DataRow custRow = dtOrders.NewRow();
      custRow["Id"] = i;
      custRow["CustomerID"] = i;
      custRow["OrderTotal"] = i*10;
      dtOrders.Rows.Add(custRow);

}

dsDataSet.Relations.Add(new DataRelation("link", dsDataSet.Tables[0].Columns[0], dsDataSet.Tables[1].Columns[1]));

this.xamDataGrid1.DataSource = dsDataSet.Tables[0].DefaultView;

}

private void button1_Click(object sender, RoutedEventArgs e)
{
this.xamDataGrid1.DataSource = null;
this.xamDataGrid1.DataSource = dsDataSet.Tables[0].DefaultView;
}

private void xamDataGrid1_InitializeRecord(object sender, Infragistics.Windows.DataPresenter.Events.InitializeRecordEventArgs e)
{
string hit = "hi";
}

}
}

In Winforms I can do something like this:

private void ultraGrid_InitializeRow(object sender, Infragistics.Win.UltraWinGrid.InitializeRowEventArgs e)
{
if (e.Row.ChildBands != null)
{
bool found = false;

foreach (Infragistics.Win.UltraWinGrid.UltraGridRow r2 in e.Row.ChildBands[0].Rows)
  {
//Do some logic

  if (found)
      break;

}

e.Row.Hidden = !found;
}
}