Update geometries (feature service)

Update a feature's location in an online feature service.

Use case

Sometimes users may want to edit features in an online feature service by moving them.

How to use the sample

Tap a feature to select it. Tap again to set the updated location for that feature. An alert will be shown confirming success or failure.

How it works

1. Create a ServiceGeodatabase object from a URL.
2. Get the ServiceFeatureTable from the ServiceGeodatbase object.
3. Create a FeatureLayer object from the ServiceFeatureTable.
4. Select a feature from the feature layer, using FeatureLayer.SelectFeatures.
5. Load the selected feature.
6. Change the selected feature's location using Feature.Geometry = geometry.
7. After the change, update the table on the server using ApplyEditsAsync.

Relevant API

• Feature
• FeatureLayer
• ServiceFeatureTable
• ServiceGeodatabase

Additional information

When editing feature tables that are subject to database behavior (operations on one table affecting another table), it's now recommended to call these methods (apply edits & undo edits) on the ServiceGeodatabase object rather than on the ServiceFeatureTable object. Using the ServiceGeodatabase object to call these methods will prevent possible data inconsistencies and ensure transactional integrity so that all changes can be commited or rolled back.

Tags

editing, feature layer, feature table, moving, service, updating

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<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="ArcGISRuntimeXamarin.Samples.UpdateGeometries.UpdateGeometries"
             xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:esriUI="clr-namespace:Esri.ArcGISRuntime.Xamarin.Forms;assembly=Esri.ArcGISRuntime.Xamarin.Forms"
             xmlns:resources="clr-namespace:Forms.Resources;assembly=ArcGISRuntime">
    <RelativeLayout>
        <esriUI:MapView x:Name="MyMapView"
                        BindingContext="{x:Reference Name=ResponsiveFormContainer}"
                        Style="{StaticResource MapWithFormStyle}" />
        <resources:ResponsiveFormContainer x:Name="ResponsiveFormContainer">
            <StackLayout>
                <Label HorizontalTextAlignment="Center" Text="Tap to select a feature. Tap again to move it." />
            </StackLayout>
        </resources:ResponsiveFormContainer>
    </RelativeLayout>
</ContentPage>