Filtering DataGridView without changing datasource

Question

I\'m developing user control in C# Visual Studio 2010 - a kind of \"quick find\" textbox for filtering datagridview. It should work for 3 types of datagridview datasources:

Answer 1

//"Comment" Filter datagrid without changing dataset,Perfectly works.

            (dg.ItemsSource as ListCollectionView).Filter = (d) =>
            {
                DataRow myRow = ((System.Data.DataRowView)(d)).Row;
                if (myRow["FName"].ToString().ToUpper().Contains(searchText.ToString().ToUpper()) || myRow["LName"].ToString().ToUpper().Contains(searchText.ToString().ToUpper()))
                    return true; //if want to show in grid
                return false;    //if don't want to show in grid
            };