Dynamic GridViewColumns with CellTemplate

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WPF

MVVM

I am creating Gridview with dynamic columns as below.

gridViewCol.DisplayMemberBinding = new Binding(string.Format("[{0}]", indexToUse));

I was binding the ListView Itemssource to

ObservableCollection<List<string>>

This is working fine.

Now
We have a new requirement now that on these dynamic gridviewcolumn cells, I need to displays a ToggleButton/Popup depending on the data. The popup should displays a listbox.
For this I need to use GridViewColumn CellTemplate. But with datatemplate for CellTemplate in Xaml, how do I pass the index information(indexToUse above)?
ListView Itemssource now binds to

ObservableCollection<List<ItemRow>> instead of ObservableCollection<List<string>>

ItemRow

public class ItemRow : NotificationObject
    {
        private string cellItem = string.Empty;

        public string CellItem
        {
            get { return cellItem; }
            set
            {
                cellItem = value;
                RaisePropertyChanged(() => CellItem);
            }
        }

        private bool isMultiValued = false;
        public bool IsMultiValued
        {
            get { return isMultiValued; }
            set { isMultiValued = value; }
        }

        private List<string> multiValuedCellItem = new List<string>();
        public List<string> MultiValuedCellItem
        {
            get { return multiValuedCellItem; }
            set { multiValuedCellItem = value; }
        }
    }

I tried other alternatives to dynamically build the datatemplate like XAMLReader.Load and FrameworkElementFactory.
XAMLReader works but does not allow event handlers which is a problem.
FrameworkElementFactory does not work as required. Same is given per http://www.ikriv.com/dev/wpf/DataTemplateCreation/[^]

Using Relative source binding to get the column index also does not work. I cant use ElementName as columns are dynamic.
I tried using the similar solution as given here, but did not work http://www.thomaslevesque.com/2011/03/21/wpf-how-to-bind-to-data-when-the-datacontext-is-not-inherited/[^]

Could anyone please suggest any other alternative solutions or suggestions on how to use Celltemplate with dynamic gridview columns.