>I need to change sorting of records when user clicks on a column header of a grid. As far as I know how to do it, you have to replace "Header1" from the column object and replace it with your own custom object. The problem I am having is that it works when grid has no columns and you build it from "scratch."
>
>But I am trying to make it work on an existing grid (that is, grid build in the designer). So when I run the following code in the INIT method of the form:
>
>

>for each loColumn in thisform.grid.columns
>	loColumn.RemoveObject( "Header1" )
>	loColumn.AddObject( "Header1", "custom_header" )
>endfor
>

>
>I get error on the line .AddObject. I am using VFP 6.
>
>Does VFP 8 grid have functionality that would allow me to make this work on an existing grid (that is, without having to build grid in the INIT method)?
>
>Thank you

Dmityr,
Download 'Two grid classes' from downloads for sample code. Basically you should check existence of header1 even after removing and add a new one with a new name (not header1). You could also override addcolumn to add your columns (check Message #942362).
In VFP8 there are more than one ways. Simple one I think is to use Member* properties.
Cetin