Getting Attributes from a standalone table in FeatureService

Question

Hi all,

I'm trying to create a featuredataform that allow users to edit attributes of a standalone table in a SDE geodatabase.

I initialized a FeatureLayer linking to the table in a FeatureService and tried to pass all the attributes to a FeatureDataForm.GraphicSource for editing.

I cannot retrieve the records using featurelayer.Graphics.Attributes["attr1"]. It seems that the FeatureLayer doesn't contain any graphics.

Is there any way to do pass the information to the FeatureDataForm?

Thanks!!!

Jerry

YaoMo2 · Answer

I figured out that it's the Mode = "OnDemand" that messed up with the update event.

and yes, I should initialize the featurelayer in code behind.

Thanks so much for your help!

JenniferNery · Answer

Since you are working with a table, this FeatureLayer should reside in code-behind and not part of your Map.
Something like this:
FeatureLayer l = new FeatureLayer()
{
 Url = "http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/SanFrancisco/311Incidents/FeatureServer/1",
 AutoSave = false
};   
l.OutFields.Add("*");
l.Initialized += (s, e) =>
{
 l.Update();
};
l.Initialize();

YaoMo2 · Answer

Yes, My Table is similar except that there's no relation. I've initialized my feature layer in XAML: Then I call update once a button is clicked (Functions similar to this post😞 private void editbutton_Click(object sender, RoutedEventArgs e) { try { FeatureLayer f = Map.Layers["TreeEdit_FeatureLayer"] as FeatureLayer; MessageBox.Show("initialized: " + f.IsInitialized.ToString()); //will display True f.UpdateCompleted += new EventHandler(featurelayer_updatecompleted); f.UpdateFailed +=new EventHandler(f_UpdateFailed); f.Update(); } catch (Exception exc) { MessageBox.Show(exc.Message); } } My Update Completed Function to test the number of graphics: private void featurelayer_updatecompleted(object sender, System.EventArgs e) { FeatureLayer ff = Map.Layers["TreeEdit_FeatureLayer"] as FeatureLayer; MessageBox.Show("update completed."); MessageBox.Show("featurelayer graphics count: " + ff.Graphics.Count.ToString()); } void f_UpdateFailed(object sender, TaskFailedEventArgs e) { MessageBox.Show(e.Error.Message); } It seems that the update will always go to UpdateFailed event. The MessageBox shows "Unable to Complete Operation". I checked my table using regular querytask. It returns correct records as usual. I still couldn't figure out where the problem is. Thanks!!