how to change the DataGrid.TableStyles

I have this situation
I have 2 TableStyle (col1, col2, col3) and (col1, col4, col5)
when the user click on a button a when to change the TableStyle...

DOes they have better way to do then :

MyGrid.TableStyles.Clear();

if( _MyGrid.TableStyles.Equals( _Style1) ){
_MyGrid.TableStyles.Add( _Style2);
}
else
{
_MyGridTableStyles.Add(_Style1);
}


Thanks