List related features

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List features related to the selected feature.

Image of list related features

Use case

Related features are useful for managing relational information, like what you would store in a relational database management system (RDBMS). You can define relationship between records as one-to-one, one-to-many, or many-to-one. For example, you could model inspections and facilities as a many-to-one relationship. Then, for any facility feature, you could list related inspection features.

How to use the sample

Tap on a feature to select it. The related features will be displayed in a list.

How it works

With a Feature, call QueryRelatedFeaturesAsync on the feature's feature table.
Iterate over the result's collection of RelatedFeatureQueryResult objects to get the related features and add them to a list.

Relevant API

ArcGISFeature
ArcGISFeatureTable
FeatureQueryResult
FeatureTable.QueryRelatedFeatures
RelatedFeatureQueryResult

Sample Code

ListRelatedFeatures.xaml

ListRelatedFeatures.xaml.cs

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﻿<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="ArcGISRuntime.Samples.ListRelatedFeatures.ListRelatedFeatures"
             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">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="150" />
            <RowDefinition Height="auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <ListView x:Name="MyResultsView" Grid.Row="0" />
        <Label x:Name="Status"
               Grid.Row="1"
               Margin="5"
               HorizontalOptions="FillAndExpand"
               Text="Tap a park (green) to see related features." />
        <esriUI:MapView x:Name="MyMapView" Grid.Row="2" />
    </Grid>
</ContentPage>