DropDownList casting problem

Question

Table
int id
string name
Tables extends table
Array<TableLinks> of children
TableLinks
Table rightTable
In flex, I get a list of Tables from my web service
Display a combobox with the list of Tables
Once someone selects from the list the list of TableLinks is populated in a datagrid
in the rightTable column it displays the rightTable.name in the label
When you edit the column a dropdownlist shows
<mx:DataGridColumn id="tableNameDC"
   headerText="Table"
   editable="true"
   dataField="rightTable"
   labelFunction="tableFormat"
   editorDataField="value"
   width="150">
Is there anyway to cast my Tables list to type Table here?
Currently, I keep the list as Tables
When you select and item the value is saved to a value object but casted from Tables to Table
When you exit the dropdownlist the get value function returns the Table value Object.  But for some reason, it keeps telling me its null.
Its as if when I cast the Tables item to Table it fails.
public function get value():TableDto
return rightTableDto
protected function selectableDropDown_closeHandler(event:DropDownEvent):void
rightTableDto = selectableDropDown.selectedItem as TableDto;
So, if the first question is not doable,  what do you think I am doing wrong?

Answer 1

Hi,
   You can use onClientSelect to trigger the javascript code.
Here is a sample code to trigger the javascript
<%String projectId="";%>
<hbj:dropdownListBox
     id="projectIdDL"
     width="110"
     onClientSelect="getStages()">
<%projectId=myContext.getParamIdForComponent(projectIdDL);%>
     </hbj:dropdownListBox>
<script>
var proid=document.getElementById('<%=projectId%>');
function getStages()
//code
</script>
Hope this will oslve your problem to trigger a javascript code when you select a value in DropdownListbox
Regards
Padmaja