Hi Andrew,

I tried out your example and it works, however, it is a lot of maintenance to retrofit this into our exiting window code, so I have been trying to extend the XamGrid class so I only have to change/use a top-level control type to automatically get this feature.  I am not having a lot of success, can you modify your example to work similar to what I have below?

<ig:XamGrid
	 x:Class="InfragisticsEx.XamGridCustomFilterSelectionControl"
 
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 
        xmlns:ig="http://schemas.infragistics.com/xaml"
        xmlns:igPrim="http://schemas.infragistics.com/xaml/primitives"
 
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
        mc:Ignorable="d"
        d:DesignHeight="145" d:DesignWidth="1000">
        <ig:XamGrid.Resources>
            <Style TargetType="{x:Type igPrim:FilterSelectionControl}">
                <EventSetter Event="Loaded" Handler="FCS_Loaded"/>
            </Style>
        </ig:XamGrid.Resources>
</ig:XamGrid>

using System;
using System.Windows;
using System.Windows.Threading;
using Infragistics.Controls.Grids;
using Infragistics.Controls.Grids.Primitives;
 
namespace InfragisticsEx
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class XamGridCustomFilterSelectionControl : XamGrid
    {
        void FCS_Loaded(object sender, RoutedEventArgs e)
        {
            FilterSelectionControl FCS = sender as FilterSelectionControl;
            FilterTextBox TB = Infragistics.Windows.Utilities.GetDescendantFromName((DependencyObject)FCS, "FilterTextBox") as FilterTextBox;
 
            if (TB != null)
            {
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    TB.Focus();
                }), DispatcherPriority.Background);
            }            
        }
    }
}

and then I try to use it like:

        xmlns:InfragisticsEx="clr-namespace:InfragisticsEx;assembly=Utilities"

...

        <InfragisticsEx:XamGridCustomFilterSelectionControl Grid.Row="1" x:Name="resultsGrid" AutoGenerateColumns="False">
 
            <ig:XamGrid.ClipboardSettings>
                <ig:ClipboardSettings AllowCopy="True" CopyType="SelectedCells" CopyOptions="ExcludeHeaders" />
            </ig:XamGrid.ClipboardSettings>
 
            <ig:XamGrid.SelectionSettings>
                <ig:SelectionSettings CellSelection="Multiple" />
            </ig:XamGrid.SelectionSettings>
 
            <ig:XamGrid.SortingSettings>
                <ig:SortingSettings AllowMultipleColumnSorting="True" />
            </ig:XamGrid.SortingSettings>
            <ig:XamGrid.FixedColumnSettings>
                <ig:FixedColumnSettings AllowFixedColumns="Both"/>
            </ig:XamGrid.FixedColumnSettings>
 
            <ig:XamGrid.FilteringSettings>
                <ig:FilteringSettings AllowFiltering="FilterMenu" FilteringScope="ColumnLayout" />
                <!--ig:FilteringSettings AllowFiltering="FilterRowTop" /-->
            </ig:XamGrid.FilteringSettings>

...