How to show all the data of a ArcGIS map server?

LeiZhou

I need to create a widget to show all the data of a ArcGIS map server; need to create a comboBox so that all the city's population information can show up in it.  Should i use <mx WebService>, or should I use ESRI:query?

If I use query, each time I have query according to city name, that means I can only get one city's population info each time.  But I need all of them.  Thanks!

LeiZhou

Thank you so much for doing this!

You can use the ESRI query. If you set the where clause to equal 1=1 it will always be true and send you all the data back.

Here is a sample

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
      xmlns:mx="library://ns.adobe.com/flex/mx"
      xmlns:esri="http://www.esri.com/2008/ags"
      xmlns:s="library://ns.adobe.com/flex/spark"
      pageTitle="Query Task Sample">

 
 <s:layout>
  <s:VerticalLayout horizontalAlign="center" paddingTop="25"/>
 </s:layout>
 
 <fx:Declarations>
  <esri:QueryTask id="queryTask"
      url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/5"
      useAMF="false"/>
  <esri:Query id="query"
     outFields="[STATE_NAME,STATE_FIPS,SUB_REGION,STATE_ABBR,POP2000,POP2007]"
     returnGeometry="false"
     where="1=1"/>
 </fx:Declarations>
 
 <s:Panel title="Get All Results">
  <s:layout>
   <s:VerticalLayout/>
  </s:layout>
  <s:HGroup verticalAlign="middle">
   
   <s:Button click="queryTask.execute(query);" label="Get All"/>
  </s:HGroup>
  <mx:DataGrid id="resultsGrid"
      dataProvider="{queryTask.executeLastResult.attributes}"
      visible="{queryTask.executeLastResult != null}">
   <mx:columns>
    <mx:DataGridColumn dataField="STATE_NAME" headerText="State Name"/>
    <mx:DataGridColumn dataField="SUB_REGION" headerText="Region"/>
    <mx:DataGridColumn dataField="STATE_FIPS" headerText="FIPS"/>
    <mx:DataGridColumn dataField="STATE_ABBR" headerText="Abbreviation"/>
    <mx:DataGridColumn dataField="POP2000" headerText="Population 2000"/>
    <mx:DataGridColumn dataField="POP2007" headerText="Population 2007"/>
   </mx:columns>
  </mx:DataGrid>
 </s:Panel>
</s:Application>

Drew