Method PopulateFromServiceAsync
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
| Type | Name | Description |
|---|---|---|
| QueryParameters | parameters | The QueryParameters used to filter feature results. |
| Boolean | clearCache | A value indicating whether to clear existing table data before loading new results. If |
| IEnumerable<System.String> | outFields | The attribute fields to include in the result. |
Returns
| Type | Description |
|---|---|
| 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 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
| Target | Versions |
|---|---|
| .NET Standard 2.0 | 100.5 - 100.15 |
| .NET 6.0 | 100.13 - 100.15 |
| .NET 6.0 Windows | 100.13 - 100.15 |
| .NET Framework | 100.5 - 100.15 |
| .NET 5 | 100.10 - 100.12 |
| .NET Core 3.1 | 100.7 - 100.12 |
| Xamarin.Android | 100.5 - 100.15 |
| Xamarin.iOS | 100.5 - 100.15 |
| UWP | 100.5 - 100.14 |
Relevant samples
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
| Type | Name | Description |
|---|---|---|
| QueryParameters | parameters | The QueryParameters used to filter feature results. |
| Boolean | clearCache | A value indicating whether to clear existing table data before loading new results. |
| IEnumerable<System.String> | outFields | The attribute fields to include in the result. |
| CancellationToken | cancellationToken | A cancellation token that can be used by other objects or threads to receive notice of cancellation. |
Returns
| Type | Description |
|---|---|
| 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. 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 the Intersects spatial relationship.
Applies to
Platforms and versions
| Target | Versions |
|---|---|
| .NET Standard 2.0 | 100.5 - 100.15 |
| .NET 6.0 | 100.13 - 100.15 |
| .NET 6.0 Windows | 100.13 - 100.15 |
| .NET Framework | 100.5 - 100.15 |
| .NET 5 | 100.10 - 100.12 |
| .NET Core 3.1 | 100.7 - 100.12 |
| Xamarin.Android | 100.5 - 100.15 |
| Xamarin.iOS | 100.5 - 100.15 |
| UWP | 100.5 - 100.14 |
PopulateFromServiceAsync(String, Boolean)
Asynchronously populates the table using an XML query.
Declaration
public Task<FeatureQueryResult> PopulateFromServiceAsync(string xmlRequest, bool clearCache)Parameters
| Type | Name | Description |
|---|---|---|
| System.String | xmlRequest | An XML-encoded GetFeature request. |
| Boolean | clearCache | A value indicating whether to clear existing table data before loading new results. |
Returns
| Type | Description |
|---|---|
| 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 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.
Applies to
Platforms and versions
| Target | Versions |
|---|---|
| .NET Standard 2.0 | 100.5 - 100.15 |
| .NET 6.0 | 100.13 - 100.15 |
| .NET 6.0 Windows | 100.13 - 100.15 |
| .NET Framework | 100.5 - 100.15 |
| .NET 5 | 100.10 - 100.12 |
| .NET Core 3.1 | 100.7 - 100.12 |
| Xamarin.Android | 100.5 - 100.15 |
| Xamarin.iOS | 100.5 - 100.15 |
| UWP | 100.5 - 100.15 |
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
| Type | Name | Description |
|---|---|---|
| System.String | xmlRequest | An XML-encoded GetFeature request. |
| Boolean | clearCache | A value indicating whether to clear existing table data before loading new results. |
| CancellationToken | cancellationToken | A cancellation token that can be used by other objects or threads to receive notice of cancellation. |
Returns
| Type | Description |
|---|---|
| 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 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.
Applies to
Platforms and versions
| Target | Versions |
|---|---|
| .NET Standard 2.0 | 100.5 - 100.15 |
| .NET 6.0 | 100.13 - 100.15 |
| .NET 6.0 Windows | 100.13 - 100.15 |
| .NET Framework | 100.5 - 100.15 |
| .NET 5 | 100.10 - 100.12 |
| .NET Core 3.1 | 100.7 - 100.12 |
| Xamarin.Android | 100.5 - 100.15 |
| Xamarin.iOS | 100.5 - 100.15 |
| UWP | 100.5 - 100.14 |