>Hi,
>
>I want to set some coding in the Grid Header Click event in runtime.
>How to do it ?

I don't know if that's possible.

You could pass a parameter to a generic function. If you want to, say, order the grid by the column whose header gets clicked you can do something like this:

* Not tested, concept only

* Grid.Column.Header.Click()
=OrderSet( This.Caption )

* Function OrderSet
FUNCTION OrderSet
LPARAMETERS tcCaption

DO CASE
CASE tcCaption == "Caption1"
  SET ORDER TO TAG SomeTag1 IN SomeAlias

CASE
...

OTHERWISE
...

ENDCASE

GO RECNO( "SomeAlias" ) IN SomeAlias

* Refresh the grid

ENDFUNC