thnx all for your help, i have made the node with the help of cetins example. Starting with a dbf of 1600000 records in combination of other files i managed to make one cursor that contains all info i need to build my treeview. my final cursor contains 66130 records. Building the cursor takes the pc max 10 seconds. putting the info 66130 records takes me 50 seconds.

this is my code :

SCAN
IF empty(mercedes_treeview.parentID)
.Nodes.add(,tvwFirst,alltrim(mercedes_treeview.nodeID),ALLTRIM(mercedes_treeview.nodeText))
ELSE
.Nodes.add(alltrim(mercedes_treeview.parentID),tvwChild,alltrim(mercedes_treeview.nodeID),ALLTRIM(mercedes_treeview.nodeText))
ENDIF
ENDSCAN

Does somebody knows how i can speed up the building of the treeview ?

thnx