Event handlers question

Question

Which event handler is called first when navigating from a page? Say I am passing parameters from page 1 to page 2. In page 2, will the onCreate get called first or onRequest get called first?
In onRequest, I have
calmoyr = request->get_form_field( 'calmoyr' ).
In OnCreate, I have
select * from /bic/aNCN_O01300 into table itab
where CALMONTH = calmoyr.
For some reason, the select statement is not taking any value for calmoyr. It is getting the value from the previous page but the select statement is not working.

Answer 1

page1:
* event handler for checking and processing user input and
* for defining navigation
CLASS CL_HTMLB_MANAGER DEFINITION LOAD.
* Optional: test that this is an event from HTMLB library.
IF event_id = CL_HTMLB_MANAGER=>EVENT_ID.
* See if upload is triggered from button
  DATA: event TYPE REF TO CL_HTMLB_EVENT.
  event = CL_HTMLB_MANAGER=>get_event( runtime->server->request ).
  IF event->name = 'button' AND event->event_type = 'click'.
    DATA: button_event TYPE REF TO CL_HTMLB_EVENT_BUTTON.
    button_event ?= event.
  ENDIF.
  CASE event->id.
    WHEN 'Submit'.
      DATA: cmy TYPE REF TO CL_HTMLB_INPUTFIELD.
      DATA: fid TYPE REF TO CL_HTMLB_INPUTFIELD.
      cmy ?= CL_HTMLB_MANAGER=>GET_DATA(
                          request = runtime->server->request
                          name    = 'inputField'
                          id      = 'calmonthyear'
      IF cmy IS NOT INITIAL.
        calmoyr = cmy->value.
      ENDIF.
      fid ?= CL_HTMLB_MANAGER=>GET_DATA(
                          request = runtime->server->request
                          name    = 'inputField'
                          id      = 'FACID'
      IF fid IS NOT INITIAL.
        facid = fid->value.
      ENDIF.
      navigation->set_parameter( 'calmoyr' ).
      navigation->set_parameter( 'facid' ).
      navigation->next_page( 'ToTest' ).
  ENDCASE.
ENDIF.
layout of page1:
<%@page language="abap"%>
<%@extension name="htmlb" prefix="htmlb"%>
<htmlb:content design="design2003">
  <htmlb:page title = " ">
    <htmlb:form>
<htmlb:group id     = "ZBOOKMARK"
                 design = "SAPCOLOR"
                 title  = "Selection Criteria for Bookmark Search"
                 width  = "100%" >
           <htmlb:groupBody>
<htmlb:gridLayout id = "FiletypeGrid"
                                  cellSpacing    = "3"
                                  columnSize     = "4"
                                  rowSize        = "5" >
                        <htmlb:gridLayoutCell   rowIndex = "1"
                                                columnIndex = "1"
                                                horizontalAlignment = "right" >
                             <htmlb:textView text = "Please choose Calendar Year/Month: "
                                     design = "EMPHASIZED"/>
                       </htmlb:gridLayoutCell>
                       <htmlb:gridLayoutCell   rowIndex = "1"
                                                columnIndex = "2"
                                                horizontalAlignment = "right" >
                             <htmlb:dropdownListBox id ="calmonthyear"
               nameOfKeyColumn   = "calmonth"
          nameOfValueColumn = "calmonth"
          table             = "<%=itab%>" >
</htmlb:dropdownListBox>
                  </htmlb:gridLayoutCell>
<htmlb:gridLayoutCell   rowIndex = "2"
                                                columnIndex = "1"
                                                horizontalAlignment = "right" >
                             <htmlb:textView text = "Choose FACID (Optional): "
                                     design = "EMPHASIZED"/>
                       </htmlb:gridLayoutCell>
                       <htmlb:gridLayoutCell   rowIndex = "2"
                                                columnIndex = "2"
                                                horizontalAlignment = "right" >
                             <htmlb:inputField id ="FACID"
                                             maxlength = "10"
                                             />
                       </htmlb:gridLayoutCell>
<htmlb:gridLayoutCell   rowIndex = "3"
                                                columnIndex = "1"
                                                horizontalAlignment = "left" >
                             <htmlb:button id = "Submit"
                                         text = "Submit"
                                         onClick = "Submit"
                                         design = "EMPHASIZED"
                                         width = "75" />
                       </htmlb:gridLayoutCell>
</htmlb:gridLayout>
</htmlb:groupBody>
</htmlb:group>
    </htmlb:form>
  </htmlb:page>
</htmlb:content>