null - Flex 4 Drop Down List - bound with data service, how to always keep prompt or add item at index -1 programmatically -


i have drop down list bound using http data service database (set through wizard, not declaration). drop down list changes values in datagrid , need "select one" null value users can select everything. here drop down list:

<s:dropdownlist id="ddlproducts" width="400" prompt="select product" close="datagridcontentchanging()" creationcomplete="ddlproducts_creationcompletehandler(event)" labelfield="title">       <s:dataprovider>           <s:asynclistview list="{getproductsresult.lastresult}"/>      </s:dataprovider>   </s:dropdownlist>

is there way keep prompt or programmatically add "select one" -1 index of drop down list?

any apprecitated. thanks!

setup value in ur database
(any number of ways do: if using table add table, if pulling data table put in union statement)

then handle the 'all' value (on click) put in '%' ur variable in dataprovider


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