Method PopulateFromServiceAsync

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PopulateFromServiceAsync(QueryParameters, Boolean, IEnumerable<String>)

Asynchronously populates the table using a query.

Declaration

public Task<FeatureQueryResult> PopulateFromServiceAsync(QueryParameters parameters, bool clearCache, IEnumerable<string> outFields)

Parameters

Description System.Boolean clearCache

A value indicating whether to clear existing table data before loading new results. If true , clears existing table data before populating with the query result.

System.Collections.Generic.IEnumerable < System.String > outFields

The attribute fields to include in the result.

System.Threading.Tasks.Task < FeatureQueryResult >

A task that represents the asynchronous populate from service operation. The value of the task result is a FeatureQueryResult object.

Remarks

Use the default (empty) QueryParameters to get all features from the service. Specifying null or an empty System.Collections.Generic.IEnumerable<T> for outFields will result in the default set of outfields being used. WFS is only compatible with a subset of possible queries defined by QueryParameters . Where clause only works when the table is backed by a service powered by GeoServer. Spatial queries (those that set Geometry ) must use Intersects .

Applies to

Platforms and versions TargetVersions .NET Standard 2.0 100.5 - 200.7 .NET 100.13 - 200.7 .NET Windows 100.13 - 200.7 .NET Android 200.2 - 200.7 .NET iOS 200.0 - 200.7 .NET Framework 100.5 - 200.7 Xamarin.Android 100.5 - 100.14 Xamarin.iOS 100.5 - 100.15 UWP 100.5 - 200.7

PopulateFromServiceAsync(QueryParameters, Boolean, IEnumerable<String>, CancellationToken)

Asynchronously populates the table using a query.

Declaration

public async Task<FeatureQueryResult> PopulateFromServiceAsync(QueryParameters parameters, bool clearCache, IEnumerable<string> outFields, CancellationToken cancellationToken)

Parameters

Description

Remarks

Use the default (empty) QueryParameters to get all features from the service. If you specify a


      null

or an empty collection for outfields, then the default set of outfields are used. WFS is compatible with a subset of possible queries defined by QueryParameters . The WhereClause only works when the table is backed by a service powered by a GeoServer . Spatial queries (those that specify geometries) must use the Intersects spatial relationship. You must ensure that the FeatureRequestMode is set to ManualCache before attempting to populate the table.

Applies to

PopulateFromServiceAsync(String, Boolean)

Asynchronously populates the table using an XML query.

Declaration

public Task<FeatureQueryResult> PopulateFromServiceAsync(string xmlRequest, bool clearCache)

Parameters

Description

Remarks

The schema of the query result must match or be a subset of the schema of the table. The XML query must be made against the same feature type represented by the WFS feature table. You must ensure that the FeatureRequestMode is set to ManualCache before attempting to populate the table.

Applies to

Platforms and versions TargetVersions .NET Standard 2.0 100.5 - 200.7 .NET 100.13 - 200.7 .NET Windows 100.13 - 200.7 .NET Android 200.0 - 200.7 .NET iOS 200.0 - 200.7 .NET Framework 100.5 - 200.7 Xamarin.Android 100.5 - 100.15 Xamarin.iOS 100.5 - 100.15 UWP 100.5 - 200.7

PopulateFromServiceAsync(String, Boolean, CancellationToken)

Asynchronously populates the table using an XML query.

Declaration

public async Task<FeatureQueryResult> PopulateFromServiceAsync(string xmlRequest, bool clearCache, CancellationToken cancellationToken)

Parameters

Description

Remarks

Use XML to perform queries that aren't possible with QueryParameters . The schema of the query result should match or be a subset of the schema of the table. The queried feature type must be the same feature type represented by this table.