topic Where do methods (such as OnSelectionChange) for a combo box that is nested in a dockpane go? in ArcGIS Pro SDK Questions

Where do methods (such as OnSelectionChange) for a combo box that is nested in a dockpane go?

JohnPhillipsGeo — Mon, 03 Jun 2019 17:14:11 GMT

There is plenty of documentation on how to add combo boxes to a toolbar/group from the daml and how to add functionality in the corresponding .cs file. However, I haven't been able to find any documentation on how to put a combobox in the .xaml file for a dockpane and reference methods.

The method I would like to reference is OnSelectionChange:
https://github.com/Esri/arcgis-pro-sdk/wiki/ProGuide-Combo-boxes#determine-when-a-selection-occurs

I have my combobox declared in the .xaml

and I am able to add items to a list and pass them as the source:

foreach (var item in profileRead)
{
string name = Path.GetFileNameWithoutExtension(item);

_profiles.Add(name);
}

private ObservableCollection<string> _profiles = new ObservableCollection<string>();

public ObservableCollection<string> Profiles
{
set
{
SetProperty(ref _profiles, value, () => Profiles);
NotifyPropertyChanged(() => Profiles);
}

get { return _profiles; }

}

I was able to reference the selection from the xaml.cs file:

public partial class Dockpane1View : UserControl
{
public static ComboBox profileBoxRef = new ComboBox();

public Dockpane1View()
{
InitializeComponent();
profileBoxRef = ProfileBox;
}

}

However, I cannot figure out how to implement OnSelectionChange.

Thanks

JP

Re: Where do methods (such as OnSelectionChange) for a combo box that is nested in a dockpane go?

GKmieliauskas — Tue, 04 Jun 2019 06:23:08 GMT

Hi John,

If you do not use MVVM then you could add event to your xaml file like this:

In xaml.cs you need to add method for SelectionChanged:

private void Layer_SelectionChanged(object sender, SelectionChangedEventArgs e)

In MVVM you do not need OnSelectionChange. You need to create property for SelectedItem or SelectedValue in your model view file and make binding in xaml

Re: Where do methods (such as OnSelectionChange) for a combo box that is nested in a dockpane go?

JohnPhillipsGeo — Tue, 04 Jun 2019 11:49:44 GMT

Gintautas,

That worked like a charm, thank you!!