How to assign the OutFields property for a FeatureLayer in the code behind?

Question

Hi,

I created a new FeatureLayer in the C# code behind, and want to assign its OutFields field. How can I do it?

What I want is as follows:
FeatureLayer flyr = new FeatureLayer();
flyr.OutFields= "*";

Thanks,

Wei

KevinGray · Answer

I'm trying to use the infowindow sample (http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#InfoWindowSimple) to display field values from a Featurelayer created in code.  The popup infowindow appears but it's empty.  Since it's created in code I've tried featureLayer.Outfields = new Outfields () {[fieldName]} or featureLayer.Outfields.Add("*") neither of which populated the balloon for the map click event.

I've check for  feature.count > 0  as well as outfields.count > 0 both of which are true.

Any ideas?

Thanks in advance.

DominiqueBroux · Answer

why not use new OutFields(){}? Why a "*" sign can represent all the fields, what's the mechanism behind it? What if I want to add certain fields, should I use ".add".

Wei

"*" is a wildcard that represents all the fields.
I used it because your initial code was using it but you can initialize outfields with a list of fields as well:
 
flyr.OutFields= new OutFields {"field1", "field2", "field3"};
 
or by using an equivalent syntax:
  
flyr.OutFields= new OutFields();
flyr.OutFields.Add("field1");
flyr.OutFields.Add("field2");
flyr.OutFields.Add("field3");

weiliang · Answer

Thanks for your quick reply, Dominique. However, to instantiate a new OutFields object, why not use new OutFields(){}? Why a "*" sign can represent all the fields, what's the mechanism behind it? What if I want to add certain fields, should I use ".add".

Wei