topic Re: FeatureDataForm refresh after coded value domain change in ArcGIS API for Silverlight Questions

FeatureDataForm refresh after coded value domain change

MikeDuppong — Fri, 11 Nov 2011 17:57:53 GMT

I'm programmatically modifying the values of a coded value domain, and after doing so, can't seem to get the FeatureDataForm to refresh so the combobox displays the new set of values. Is there a trick?

Re: FeatureDataForm refresh after coded value domain change

JenniferNery — Sun, 12 Dec 2021 05:38:00 GMT

Thank you for reporting this. I was able to reproduce with this sample http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#ToolkitFeatureDataForm. I added a Button with this code in the click event:

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var g = MyFeatureDataForm.GraphicSource;
            g.Attributes["req_type"] = "Graffiti Complaint �?? Private Property"; //updates fine
            g.Attributes["status"] = (Int16)1; // fails to update
        }

You can download source code for FeatureDataForm http://esrisilverlight.codeplex.com/and make changes there or use your own user control.

I added the following TextBlock with DataContext pointing to FeatureDataForm.GraphicSource and the Binding statement here allows it to be updated when the attribute value is changed.
<TextBlock x:Name="MyTB" Text="{Binding Attributes[status]}"/>

Re: FeatureDataForm refresh after coded value domain change

MikeDuppong — Sun, 12 Dec 2021 05:38:03 GMT

Thanks, Jennifer, but I'm reporting a different problem. I am not modifying the attributes of a feature, I'm modifying a column's coded value domain. For example,

FeatureLayer ptFeatureLayer = map1.Layers["pointFeatureLayer"] as FeatureLayer;
foreach (Field field in ptFeatureLayer.LayerInfo.Fields)
{
 if (field.Name.ToLower() == "habitat")
 {
  CodedValueDomain ptCVD = field.Domain as CodedValueDomain;
  ptCVD.CodedValues.Clear();
  ptCVD.CodedValues.Add("test1", "test1");
  ptCVD.CodedValues.Add("test2", "test2");
  // how to update the featuredataform combobox for the new CVD values?   
  break;
 }
}

Re: FeatureDataForm refresh after coded value domain change

ChristopherHill — Mon, 14 Nov 2011 15:34:51 GMT

The FeatureDataForm only works off the Domains that come from the FeatureLayer.LayerInfo. You have to add the new CodedValueDomain to your service then republish the service with the additional CodedValueDomains.

Re: FeatureDataForm refresh after coded value domain change

MikeDuppong — Mon, 14 Nov 2011 16:10:41 GMT

Thanks for the reply, Chris.

Unfortunately, republishing the service is impractical for our application.

Investigating SOE's as a workaround. If I have no luck there, I will have to abandon the Silverlight API, which would be a bummer.