public class SearchableCollection<IEnumerable<String>> : ViewModelBase
    {
        private struct filterData
        {
            public String stringFilter;
            public Int32 columnfilter;
        }

        private ObservableCollection<IEnumerable<String>> collection;

        private filterData filterValue;

        public filterData FilterValue
        {
            get
            {
                return filterValue;
            }

            set
            {
                filterValue = value;
                OnPropertyChanged("FilterValue");
            }
        }

        public ObservableCollection<IEnumerable<String>> FilteredCollection
        {
            get
            {
                List<IEnumerable<String>> temp = new List<IEnumerable<String>>(collection);


                if (filterValue.columnfilter != null && filterValue.stringFilter != null)
                {
                    temp.RemoveAll(item =>
                        { return !(item as List<String>)[filterValue.columnfilter].Contains(FilterValue.stringFilter); });

                }

                return new ObservableCollection<IEnumerable<String>>(temp);
            }
        }

        public SearchableCollection(IEnumerable<IEnumerable<String>> collection, filterData Filter)
        {
            this.collection = new ObservableCollection<IEnumerable<String>>(collection);
        }

    }