public void FilterTest()
{
IBindingListView view = new DataView(_table);
view.Filter = "";
Assert.Equal(_table.Rows.Count, view.Count);
view.Filter = null;
Assert.Equal(_table.Rows.Count, view.Count);
view.Filter = "col1 <> 1";
Assert.Equal(view.Filter, ((DataView)view).RowFilter);
Assert.Equal(6, view.Count);
//RemoveFilter Test
view.RemoveFilter();
Assert.Equal("", view.Filter);
Assert.Equal("", ((DataView)view).RowFilter);
Assert.Equal(_table.Rows.Count, view.Count);
}