Identify graphics

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WinUI

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Display an alert message when a graphic is clicked.

Image of identify graphics

Use case

A user may wish to select a graphic on a map to view relevant information about it.

How to use the sample

Select a graphic to identify it. You will see an alert message displayed.

How it works

Create a GraphicsOverlay and add it to the MapView.
Add a Graphic along with a SimpleFillSymbol to the graphics overlay.
Create a Point from the location clicked on the map view by the user.
Identify the graphic on the map view with IdentifyGraphicsOverlayAsync(graphicsOverlay, pointClicked, tolerance, max results).

Relevant API

Graphic
GraphicsOverlay
MapView

Sample Code

IdentifyGraphics.xaml

IdentifyGraphics.xaml.cs

Use dark colors for code blocksCopy
﻿<UserControl x:Class="ArcGISRuntime.WinUI.Samples.IdentifyGraphics.IdentifyGraphics"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:esriUI="using:Esri.ArcGISRuntime.UI.Controls">
    <Grid>
        <esriUI:MapView x:Name="MyMapView" />
        <Border Style="{StaticResource BorderStyle}">
            <TextBlock FontWeight="SemiBold"
                       Text="Tap to identify the graphic."
                       TextAlignment="Center"
                       TextWrapping="Wrap" />
        </Border>
    </Grid>
</UserControl>