>Hi
>Im looking for a class (or sample code if any) of how add capabilities for sorting the data in columns of the grid, i've checked the files section but without success.
>
>T.i.a
>Ariel Gimenez

Hi Ariel,

You should create your own Header class and Grid class, which would use this header. Header class should be designed in a program. Check Mike Helland's FAQ #7967684 for some help. You can check Cetin's Basoz MultiSelect grid class here in Files Section, it has this functionality.

The simplest way to sort is to add these lines of code in Grid's Header:

local lcOrder, lnPos
lnPos=rat('.',this.parent.controlsource)
lcOrder=substr(this.parent.ControlSource,lnPos+1)
if tagno(lcOrder)>0 && This index already exists (assume simple indexes tagname=fieldname)
  set order to (lcOrder)
else
  * You may want to index on this field now - a little dangerous 
   index on &lcOrder tag (lcOrder)
endif

In our classlib we have a grid, which has a method SetOrder.

LPARAMETERS tcControlSource
LOCAL lnCount, lcField

*-- Sets the order to the currently selected 
*-- controlsource if possible

*-- Get the fieldname being used
lcField = ;
    SUBSTR(tcControlSource, AT(".", tcControlSource) + 1)

*-- See if the field name is in the leftmost part of the index
*-- expression. If so, SET ORDER TO the index.
FOR lnCount = 1 TO TAGCOUNT()
  IF UPPER(SYS(14, lnCount)) = UPPER(lcField)
    SET ORDER TO lnCount
    IF TYPE("thisform") == "O"
      thisform.Refresh()
    ENDIF
    EXIT
  ENDIF
ENDFOR