How to get entire column values of a datagrid when datagrid column header check box is checked and bind those values to a datatable?

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XAML

WPF

DataGrid

I have a Listbox in which I have added two controls i.e a Checkbox and a Datagrid side by side as a Listboxitem. I have done it in a following manner:

In Code behind: listBox1.items.Add(dt)

here dt is the table name.

In Xaml:

<listbox grid.row="0" alternationcount="2" minheight="305" horizontalalignment="Stretch" name="listBox1" verticalalignment="Stretch" minwidth="537">
<listbox.itemtemplate>
<datatemplate>
<stackpanel name="stkPanel" minheight="80" minwidth="500" horizontalalignment="Stretch" verticalalignment="Stretch">
<grid>
<grid.columndefinitions>
<columndefinition width="40"> <columndefinition width="Auto">
<datagrid grid.column="1">
AutoGenerateColumns="True"
MinHeight="75"
HorizontalAlignment="Center"
Name="dataGrid1"
VerticalAlignment="Stretch"
MinWidth="470"
MaxWidth="900"
ItemsSource="{Binding}"
IsReadOnly="True" removed="#E6BAB7B7">
<datagrid.columnheaderstyle>
<Style TargetType="DataGridColumnHeader">
<setter property="ContentTemplate">
<setter.value>
<datatemplate>
<checkbox name="colCheckBox" ischecked="{Binding IsChecked, ElementName=IsDone, Mode=OneWay}" content="{Binding}">



</Style>


<checkbox grid.column="0" height="35" width="25" name="IsDone" horizontalalignment="Right" verticalalignment="Center" checked="IsDone_Checked">





Suppose for first listboxitem, there is "IsDone" checkbox and a datagrid. If I select "IsDone" check box (listbox item) all the datagrid column header check box is selected.Now, I can uncheck some of the datagrid coulmn header check boxes.What I want is to get values of the entire column only whose columnheader check box is checked and bind those values to a datatable.Similarly for other listbox item.Can you please suggest me how to do that in wpf?