Hi

My problem is simple and easy to repeat.  Whenever I click on a column header in my XamWebGrid control the application/silverlight/browser goes into an infinite loop and must be killed.  Everything else in the grid works fine, I can click my checkbox and they update the view model they are bound to.  I am not sure what is causing this so I have included all the relevant details below.

I have the following XamWebGrid template for which I am dynamically generating the columns based on other controls selected else where.

<infragistics_DG:XamWebGrid x:Name="ContentGrid"

                            AutoGenerateColumns="False"

                            Margin="{TemplateBinding Margin}"

                            MaxDepth="3"

                             DeleteKeyAction="None">                       

    <infragistics_DG:XamWebGrid.ColumnMovingSettings>

        <infragistics_DG:ColumnMovingSettings AllowColumnMoving="Disabled"/>

     </infragistics_DG:XamWebGrid.ColumnMovingSettings>

     <infragistics_DG:XamWebGrid.FilteringSettings>

         <infragistics_DG:FilteringSettings AllowFilterRow="None"/>

     </infragistics_DG:XamWebGrid.FilteringSettings>

     <infragistics_DG:XamWebGrid.ExpansionIndicatorSettings>

         <infragistics_DG:ExpansionIndicatorSettings>

             <infragistics_DG:ExpansionIndicatorSettings.Style>

                 <Style TargetType="igPrim:ExpansionIndicatorCellControl">

                     <Setter Property="Background" Value="Transparent"/>

                 </Style>

             </infragistics_DG:ExpansionIndicatorSettings.Style>

         </infragistics_DG:ExpansionIndicatorSettings>

    </infragistics_DG:XamWebGrid.ExpansionIndicatorSettings>

    <infragistics_DG:XamWebGrid.RowSelectorSettings>

        <infragistics_DG:RowSelectorSettings Visibility="Collapsed" EnableRowNumbering="False"/>

    </infragistics_DG:XamWebGrid.RowSelectorSettings>

    <infragistics_DG:XamWebGrid.AddNewRowSettings>

        <infragistics_DG:AddNewRowSettings AllowAddNewRow="None"/>

    </infragistics_DG:XamWebGrid.AddNewRowSettings>

    <infragistics_DG:XamWebGrid.EditingSettings>

        <infragistics_DG:EditingSettings AllowEditing="None" />

    </infragistics_DG:XamWebGrid.EditingSettings>

</infragistics_DG:XamWebGrid>

  the code for generating the columns is,

ColumnBaseCollection columns = grid.Columns;

columns.Clear();

var branchNameCol = new TextColumn();

branchNameCol.Key = "TradingBranchLegalEntityAgreement.LegalEntity.Name";

branchNameCol.HeaderText = "Branch Name";

columns.Add(branchNameCol);

var branchProductLookupConverter = new BranchProductDictionaryLookupConverter();

foreach (Product product in BranchProductTable.DisplayProducts)

{

    var productCol = new UnboundColumn();

    productCol.Key = product.Id;

    productCol.HeaderText = product.ShortName;

    productCol.ValueConverter = branchProductLookupConverter;

    productCol.ValueConverterParameter = product.Id;

    productCol.HorizontalContentAlignment = HorizontalAlignment.Center;

    productCol.HeaderStyle = new Style(typeof(HeaderCellControl));

    productCol.HeaderStyle.Setters.Add(new Setter(HorizontalContentAlignmentProperty, HorizontalAlignment.Center));

    productCol.HeaderTemplate = (DataTemplate)XamlReader.Load(

        string.Format(

                      @"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'

                           xmlns:layout='clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Layout.Toolkit'>

                            <layout:LayoutTransformer>

                                <layout:LayoutTransformer.LayoutTransform>

                                    <RotateTransform Angle='-80'/>

                                </layout:LayoutTransformer.LayoutTransform>

                                <TextBlock Text='{0}'/>

                            </layout:LayoutTransformer>

                        </DataTemplate>",

                        product.ShortName.Replace("&", "&amp;")));

    productCol.ItemTemplate = (DataTemplate)XamlReader.Load(

                        @"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>

                            <CheckBox IsChecked='{Binding Value.IsSelected, Mode=TwoWay}'/>

                        </DataTemplate>");

    columns.Add(productCol);

}