Identify graphics

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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

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

Relevant API

  • Graphic
  • GraphicsOverlay
  • MapView

Tags

graphics, identify

Sample Code

IdentifyGraphics.xamlIdentifyGraphics.xamlIdentifyGraphics.xaml.cs
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<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>

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