Load WFS with XML query

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Load a WFS feature table using an XML query.

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Use case

Runtime QueryParameters objects can't represent all possible queries that can be made against a WFS feature service. For example, Runtime query parameters don't support wildcard searches. You can provide queries as raw XML strings, allowing you to access query functionality not available with QueryParameters.

How to use the sample

Run the sample and view the data loaded from the the WFS feature table.

How it works

Create a WfsFeatureTable and a FeatureLayer to visualize the table.
Set the feature request mode to ManualCache.
Call PopulateFromServiceAsync to populate the table with only those features returned by the XML query.

Relevant API

FeatureLayer
WfsFeatureTable
WfsFeatureTable.AxisOrder
WfsFeatureTable.PopulateFromServiceAsync

About the data

This service shows trees in downtown Seattle and the surrounding area. An XML-encoded GetFeature request is used to limit results to only trees of the genus Tilia.

For additional information, see the underlying service on ArcGIS Online.

Sample Code

WfsXmlQuery.xaml

WfsXmlQuery.xaml.cs

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﻿<UserControl
    x:Class="ArcGIS.UWP.Samples.WfsXmlQuery.WfsXmlQuery"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:esri="using:Esri.ArcGISRuntime"
    xmlns:esriUI="using:Esri.ArcGISRuntime.UI.Controls">
    <Grid>
        <esriUI:MapView x:Name="MyMapView" />
    </Grid>
</UserControl>