Populating data in dropdown

Question

Hi all ,
i have 2 dropdowns .the first dropdown contain countries list and second dropdown contain states . my requirement is when a country is selected in the first dropdown ,states should be populate in the second dropdown automatically.
pls can any one expalin the requirement
thanks
Rajeev

Answer 1

Hi,
write this code in init
public void wdDoInit()
    //@@begin wdDoInit()
     Hashtable country = new Hashtable();
     country.put("india", "india");
     country.put("us", "us");
               Hashtable indiastates = new Hashtable();
     indiastates.put("ap", "ap");
     indiastates.put("hyd", "hyd");
               Hashtable usstates = new Hashtable();
     usstates.put("us1", "us1");
     usstates.put("us2", "us2");
          Enumeration keys = country.keys();
          IWDAttributeInfo nameInfo =
               wdContext.getNodeInfo().getAttribute(
                    IPrivateCountrydropView.IContextElement.COUNTRY);
          ISimpleTypeModifiable nameType = nameInfo.getModifiableSimpleType();
          nameType.setFieldLabel("country");
          IModifiableSimpleValueSet nameSet =
               nameType.getSVServices().getModifiableSimpleValueSet();
          //get the list of slat records
          while (keys.hasMoreElements()) {
               String key = keys.nextElement().toString();
               String value = country.get(key).toString();
               nameSet.put(key, value);
     Enumeration newKeys = country.keys();
     while (newKeys.hasMoreElements()) {
          main.put(newKeys.nextElement().toString(), indiastates);
          main.put(newKeys.nextElement().toString(), usstates);
    //@@end
and in action button of the first dropdown write this code
public void onActionselect(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    //@@begin onActionselect(ServerEvent)
     IWDAttributeInfo nameInfo = wdContext.getNodeInfo().getAttribute(IPrivateCountrydropView.IContextElement.STATES);
   ISimpleTypeModifiable nameType = nameInfo.getModifiableSimpleType();
   nameType.setFieldLabel("states");
   IModifiableSimpleValueSet nameSet = nameType.getSVServices().getModifiableSimpleValueSet();
   nameSet.clear();
   Hashtable contacts = new Hashtable ();
     contacts = (Hashtable) main.get(new String(wdContext.currentContextElement().getCountry()));
     Enumeration tableKeys = contacts.keys();
       while (tableKeys.hasMoreElements()) {
            String tableKey = tableKeys.nextElement().toString();
            String tableValue = contacts.get(tableKey).toString();
          nameSet.put(tableKey, tableValue);
    //@@end
thanx,
ramani.p