Problem when creating Drag Tags Dynamically for Drag & Drop UI element

Question

In one of my requirement,
I need to populate the TREE dynamically ( only 2 levels  fixed),
This TABLE TREE is  drag enabled ( which acts as a Target & Source ) to move records to another table.
Both tables are created at design time and are having DRAG SOURCE INFO element.
In Modify View method,  I am trying to ADD  DROP TARGET INFO with tags for the table based on the records.
Even after assigning it to the table(dynamicallY), it is giving dump as
There is no DropTargetInfo in the DropOnRowTarget aggregation with this ID
Here is the code.....
    DATA l_tags TYPE string.
    DATA lo_nd_tgt_ip_end_notes TYPE REF TO if_wd_context_node.
    DATA lt_tgt_ip_end_notes TYPE wd_this->Elements_tgt_ip_end_notes.
    DATA ls_tgt_ip_end_notes TYPE wd_this->Element_tgt_ip_end_notes.
    DATA lr_table TYPE REF TO cl_wd_table.
    DATA l_name TYPE string.
    DATA l_id TYPE string.
    data l_index TYPE string.
  IF first_time = abap_true.
" reading the context   
*     navigate from <CONTEXT> to <TGT_IP_END_NOTES> via lead selection
    lo_nd_tgt_ip_end_notes = wd_context->get_child_node( name = wd_this->wdctx_tgt_ip_end_notes ).
    lo_nd_tgt_ip_end_notes->get_static_attributes_table( importing table = lt_tgt_ip_end_notes ).
" get the reference of the table
    lr_table ?= view->get_element( 'TBL_TGT_IP_ENDNOTES' ).
"Creating DROP TARGET INFO for all the RECORDS in the Table
    LOOP AT lt_tgt_ip_end_notes INTO ls_tgt_ip_end_notes WHERE parent_key = ''.
        " Tag name & Name of  DROP TARGET INFO
      l_name = ls_tgt_ip_end_notes-ip_number.
      CALL METHOD CL_WD_DROP_TARGET_INFO=>NEW_DROP_TARGET_INFO
        EXPORTING
*          BIND_ENABLED =
            ENABLED      = 'X'
             ID           =  |TGT_DROP_TARGET_INFO{ sy-tabix }|   
             NAME         = l_name
             SCOPE        = '00'
             TAGS         = l_name
         RECEIVING
            CONTROL      = lr_dti.
" binding the DROP TARGET INFO to the TABLE
CALL METHOD LR_TABLE->SET_DROP_TARGET_INFO
  EXPORTING
    THE_DROP_TARGET_INFO = lr_dti.
    ENDLOOP.
ENDIF.
any idea...on this.
Thanks in Advance,
Anil Danda
I apologize for wrong Posting
I  don't know, how to move this thread, it would be great, if any Moderator can move this thread to Web Dynpro ABAP forum
Edited by: danda aneel on Mar 10, 2011 6:36 PM

Answer 1

Hi,
As far as i know , you need to insert a droptargetinfo only once in the table level not on every row.
Try to do on design time what you are dynamically doing ? You would not get a chance to to insert a droptragetinfo on every row.