Custom Legend from arcgis10 sp1

Question

HI,
 I am using the legend referring the SampleLegend example but here the legend shows all the symbols from the service.
I have used a where clause            <esri:FeatureLayer ID="Points of Interest" Where="type ='2'"
                    Url="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Fire/Sheep/MapServer/0" />

so I want the Legend to display the symbol of type 2 only is this possible.. how do I do this please guide

SantoshV · Answer

well I tried the above code but it does not seem to work.. can you please be a little more elaborate

thank you with little changes the code worked fine..
the code goes like this            if (e.LayerItem.Layer.ID == "Districtsfl" && e.LayerItem.LegendItems != null)
            {
                var legendItemsToDelete = e.LayerItem.LegendItems.Where(item => item.Label != "Districtsfl").ToList();

foreach(var item in legendItemsToDelete)
                  if (item.Label != "Bagalkot")
                  {
                      e.LayerItem.LegendItems.Remove(item);
                  }
            }

SantoshV · Answer

The legend of a FeatureLayer doesn't contain any sub layers ==> we get the legend items (swatch+label) directly from the map layer item.
So your code should be something like: 
if (e.LayerItem.Layer.ID ="Points of Interest" && e.LayerItem.LegendItems != null)
{
  var legendItemsToDelete = e.LayerItem.LegendItems.Where(item => item.Label != "WEBRIS.SPL_ROADS").ToList();

foreach(item in legendItemsToDelete)
     e.LayerItem.LegendItems.Remove(item);
}

well I tried the above code but it does not seem to work.. can you please be a little more elaborate

DominiqueBroux · Answer

The legend of a FeatureLayer doesn't contain any sub layers ==> we get the legend items (swatch+label) directly from the map layer item.
So your code should be something like:
  
if (e.LayerItem.Layer.ID ="Points of Interest" && e.LayerItem.LegendItems != null)
{
  var legendItemsToDelete = e.LayerItem.LegendItems.Where(item => item.Label != "WEBRIS.SPL_ROADS").ToList();

foreach(item in legendItemsToDelete)
     e.LayerItem.LegendItems.Remove(item);
}