Base concept for multi column sorting in WebDynpro ABAP

multicolsorting.abap

DATA:   
	lt_context_table     TYPE wd_this->elements_context_table " MODIFY THIS LINE - context_table is a node name from View/Controller Context where you have your table fields binded
	lo_nd                TYPE REF TO if_wd_context_node,
 	lo_nd_context_table  TYPE REF TO if_wd_context_node. " MODIFY/CHECK THIS LINE - context_table is a node name from View/Controller Context where you have your table fields binded
	lt_sort              TYPE abap_sortorder_tab,
        ls_sort              TYPE abap_sortorder,
	lv_sort_state        TYPE wdui_table_col_sort_dir,
 	lv_id                TYPE string,
        lv_id_formatted      TYPE string.

lo_nd = wd_context->get_child_node( name = wd_this->wdctx_context_table ). " MODIFY THIS LINE - context_table is a node name from View/Controller Context where you have your table fields binded

lo_columns = wd_this->table_method_handler->get_all_columns( ).

LOOP AT lo_columns ASSIGNING FIELD-SYMBOL(<ls_column>).
        CLEAR ls_sort.

        lv_sort_state = <ls_column>->get_sort_state( ).
        IF lv_sort_state <> '02'.
          CASE lv_sort_state.
            WHEN '00'.
              ls_sort-descending = abap_false.
            WHEN '01'.
              ls_sort-descending = abap_true.
          ENDCASE.

          lv_id = <ls_column>->get_id( ). 
          lv_id_formatted = substring( val = lv_id off = 4 ).  "MODIFY/CHECK THIS LINE - assuming you have prefix of length 4, for example for column MATNR -> TBL_MATNR in corresponding ColumnTable ID. The column names have to match strictly, otherwise it won't work as it won't recognize the associated column name in original table
          ls_sort-name = lv_id_formatted.
          APPEND ls_sort TO lt_sort.
        ENDIF.
ENDLOOP.
	
      lo_nd->get_static_attributes_table( IMPORTING table = lt_context_table ). " MODIFY THIS LINE - context_table is a node name from View/Controller Context where you have your table fields binded

      SORT lt_context_table BY (lt_sort). " MODIFY THIS LINE - context_table is a node name from View/Controller Context where you have your table fields binded

      * navigate from <CONTEXT> to <CONTEXT_TABLE> via lead selection
  	lo_nd_context_table = wd_context->get_child_node( name = wd_this->wdctx_context_table ). " MODIFY THIS LINE - context_table is a node name from View/Controller Context where you have your table fields binded

      * bind internal table to context node
  	lo_nd_context_table->bind_table( new_items = lt_context_table ). " MODIFY THIS LINE - context_table is a node name from View/Controller Context where you have your table fields binded