how to embed a usercontrol into xamDataGrid and keep the details of original xamDataGrid?

I write the ControlTemplate but I doubt wether I keep all details （eg. color of active rectangle） of original xamDataGrid，

The problem is when i input a value into MyControl(column 4) in the top row (addnewRow) and change the focus into other cell in this row,

the cell of Number column doesn't been filled with a default value 0 automatically，and when i move the activecell into other row, a new record doesn't been generated.

What can i do to fix this?

When i input some value in Name column(column2 not redfined by ControlTemplate) and change the focus into other cell in this row,

the cell of Number column will be filled a 0 automatically，and when i move the activecell into other row， an new record will be generated.

[source of ControlTemplate]

<Style x:Key="StyleEndDateColumn" TargetType="{x:Type igDP:CellValuePresenter}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type igDP:CellValuePresenter}">
<igWindows:CardPanel Background="{TemplateBinding Background}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}" CornerRadius="{TemplateBinding igDP:CellValuePresenter.CornerRadius}" BorderBrush="{TemplateBinding Border.BorderBrush}" Background="{TemplateBinding Panel.Background}" Name="MainBorder" />
<Rectangle Fill="{TemplateBinding igDP:CellValuePresenter.BackgroundActive}" Stroke="{TemplateBinding igDP:CellValuePresenter.BorderActiveBrush}" StrokeThickness="1" Name="Active" Width="Auto" Height="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Opacity="1" Visibility="Collapsed" SnapsToDevicePixels="True" />
<ContentPresenter Visibility="Collapsed" Content="{TemplateBinding ContentControl.Content}" ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}" ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}" Style="{TemplateBinding igDP:CellValuePresenter.ForegroundStyle}" Name="PART_EditorSite" Margin="{TemplateBinding Control.Padding}" HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding Control.VerticalContentAlignment}" />
<Controls:MyControl DateFormat="yyyymmdd"
DateValue="{Binding DataItem.Day, Mode=TwoWay, ValidatesOnDataErrors=True, ValidatesOnExceptions=True}"
IsEmbedded ="True"
/>
</igWindows:CardPanel>
<ControlTemplate.Triggers>
<Trigger Property="igDP:CellValuePresenter.IsMouseOverRecord">
<Trigger.Value>
<System:Boolean>True</System:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="igDP:CellValuePresenter.IsRecordSelected">
<Setter Property="Border.BorderThickness">
<Setter.Value>
<Thickness>0,0,1,0</Thickness>
</Setter.Value>
</Setter>
<Setter Property="FrameworkElement.Margin">
<Setter.Value>
<Thickness>0,0,-1,0</Thickness>
</Setter.Value>
</Setter>
<Setter Property="Control.Padding">
<Setter.Value>
<Thickness>2,0,3,0</Thickness>
</Setter.Value>
</Setter>
<Trigger.Value>
<System:Boolean>True</System:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="igDP:DataItemPresenter.HighlightAsPrimary">
<Setter Property="Panel.Background">
<Setter.Value>
<Binding Path="BackgroundPrimary" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush">
<Setter.Value>
<Binding Path="BorderPrimaryBrush" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="FrameworkElement.Style" TargetName="PART_EditorSite">
<Setter.Value>
<Binding Path="ForegroundPrimaryStyle" RelativeSource="{RelativeSource Mode=TemplatedParent}" />
</Setter.Value>
</Setter>
<Trigger.Value>
<System:Boolean>True</System:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="igDP:CellValuePresenter.IsFieldSelected">
<Setter Property="Panel.Background">
<Setter.Value>
<Binding Path="BackgroundFieldSelected" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush">
<Setter.Value>
<Binding Path="BorderFieldSelectedBrush" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="FrameworkElement.Style" TargetName="PART_EditorSite">
<Setter.Value>
<Binding Path="ForegroundFieldSelectedStyle" RelativeSource="{RelativeSource Mode=TemplatedParent}" />
</Setter.Value>
</Setter>
<Setter Property="igDP:CellValuePresenter.CornerRadius">
<Setter.Value>
<CornerRadius>4,4,4,4</CornerRadius>
</Setter.Value>
</Setter>
<Setter Property="Border.BorderThickness">
<Setter.Value>
<Thickness>1,1,1,1</Thickness>
</Setter.Value>
</Setter>
<Trigger.Value>
<System:Boolean>True</System:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="igDP:CellValuePresenter.IsSelected">
<Setter Property="Panel.Background">
<Setter.Value>
<Binding Path="BackgroundSelected" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush">
<Setter.Value>
<Binding Path="BorderSelectedBrush" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="FrameworkElement.Style" TargetName="PART_EditorSite">
<Setter.Value>
<Binding Path="ForegroundSelectedStyle" RelativeSource="{RelativeSource Mode=TemplatedParent}" />
</Setter.Value>
</Setter>
<Setter Property="igDP:CellValuePresenter.CornerRadius">
<Setter.Value>
<CornerRadius>4,4,4,4</CornerRadius>
</Setter.Value>
</Setter>
<Setter Property="Border.BorderThickness">
<Setter.Value>
<Thickness>1,1,1,1</Thickness>
</Setter.Value>
</Setter>
<Trigger.Value>
<System:Boolean>True</System:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="igDP:CellValuePresenter.IsActive">
<Setter Property="FrameworkElement.Style" TargetName="PART_EditorSite">
<Setter.Value>
<Binding Path="ForegroundActiveStyle" RelativeSource="{RelativeSource Mode=TemplatedParent}" />
</Setter.Value>
</Setter>
<Setter Property="UIElement.Visibility" TargetName="Active">
<Setter.Value>
<x:Static Member="Visibility.Visible" />
</Setter.Value>
</Setter>
<Trigger.Value>
<System:Boolean>True</System:Boolean>
</Trigger.Value>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="UIElement.IsMouseOver">
<Condition.Value>
<System:Boolean>True</System:Boolean>
</Condition.Value>
</Condition>
<Condition Property="igDP:CellValuePresenter.IsSelected">
<Condition.Value>
<System:Boolean>False</System:Boolean>
</Condition.Value>
</Condition>
<Condition Property="igDP:CellValuePresenter.IsFieldSelected">
<Condition.Value>
<System:Boolean>False</System:Boolean>
</Condition.Value>
</Condition>
</MultiTrigger.Conditions>
<Setter Property="Panel.Background">
<Setter.Value>
<Binding Path="BackgroundHover" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush">
<Setter.Value>
<Binding Path="BorderHoverBrush" RelativeSource="{RelativeSource Mode=Self}" />
</Setter.Value>
</Setter>
<Setter Property="FrameworkElement.Style" TargetName="PART_EditorSite">
<Setter.Value>
<Binding Path="ForegroundHoverStyle" RelativeSource="{RelativeSource Mode=TemplatedParent}" />
</Setter.Value>
</Setter>
</MultiTrigger>
<DataTrigger Binding="{Binding Path=Field.IsFixedStateChanging, RelativeSource={RelativeSource Mode=Self}}" Value="True">
<Setter Property="Panel.Background">
<Setter.Value>
<SolidColorBrush>#AA8DBAEB</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter Property="Border.BorderBrush">
<Setter.Value>
<SolidColorBrush>#AA8DBAEB</SolidColorBrush>
</Setter.Value>
</Setter>
</DataTrigger>
<Trigger Property="igDP:CellValuePresenter.IsDataErrorTemplateActive">
<Setter Property="ContentControl.ContentTemplate" TargetName="PART_EditorSite">
<Setter.Value>
<DynamicResource ResourceKey="{x:Static igDP:DataPresenterBase.DataErrorContentTemplateKey}" />
</Setter.Value>
</Setter>
<Trigger.Value>
<System:Boolean>True</System:Boolean>
</Trigger.Value>
</Trigger>
</ControlTemplate.Triggers>

</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="ForegroundStyle" Value="{DynamicResource {ComponentResourceKey {x:Type igDP:XamDataGrid}, GrayForegroundStyle}}"/>
<Setter Property="ForegroundActiveStyle" Value="{DynamicResource {ComponentResourceKey {x:Type igDP:XamDataGrid}, GrayForegroundStyle}}"/>
<Setter Property="ForegroundAlternateStyle" Value="{DynamicResource {ComponentResourceKey {x:Type igDP:XamDataGrid}, GrayForegroundStyle}}"/>
<Setter Property="IsEnabled" Value="True" />
</Style>