Clear/refresh(F5) fields in web dynpro application view

Question

How to clear or refresh(F5) fields in web dynpro application abap while redirecting to another view? I have tried using "context_node->invalidate()" but it's not working for all the fields, some are getting initialised and some not. Is there any other method to refresh all the fields in the view all at once. Please guide.

Answer 1

Hi,
For the Context node( to which the drop down is bound) create a supply function as shown below:
Now populate the drop down in supply function method instead of WDDOINIT method.
Go to methods tab and write the below code in supply function method:
DATA lo_nd_drop TYPE REF TO if_wd_context_node.
    DATA lt_drop TYPE wd_this->elements_drop.
    DATA ls_drop TYPE wd_this->element_drop.
*Fill Drop down
    ls_drop-val = 'ABC'.
    APPEND ls_drop to lt_drop.
    ls_drop-val = 'DEF'.
    APPEND ls_drop to lt_drop.
* bind all the elements
   node->bind_table(
     new_items            =  lt_drop
     set_initial_elements = abap_true ).
Now once you call invalidate( ) the drop down will automatically be initialized( since the supply function will be called again) And you don't have to write the code again to populate the drop down.
hope it's clear now.
Regards,
Kiran