Method QueryDynamicEntitiesAsync
QueryDynamicEntitiesAsync(DynamicEntityQueryParameters, CancellationToken)
Returns all dynamic entities currently matching the specified query parameters.
Declaration
public Task<DynamicEntityQueryResult> QueryDynamicEntitiesAsync(DynamicEntityQueryParameters parameters, CancellationToken cancellationToken = default)Parameters
| Type | Name | Description |
|---|---|---|
| DynamicEntityQueryParameters | parameters | Parameters for performing the dynamic entity query. |
| CancellationToken | cancellationToken | An optional cancellation token that can be used by other objects or threads to receive notice of cancellation. |
Returns
| Type | Description |
|---|---|
| Task<DynamicEntityQueryResult> | The DynamicEntityQueryResult that contains all dynamic entities currently matching the specified query parameters. |
Remarks
Use this method to query the dynamic entities currently stored in the data source. The query parameters can be used to filter based on track ID, geometry, spatial relationship, and attribute query string.
The query is performed on the most recent observation of each dynamic entity in the data source at the time the query is executed.
The returned DynamicEntityQueryResult object can be used to iterate over the query results.
Applies to
Platforms and versions
| Target | Versions |
|---|---|
| .NET Standard 2.0 | 200.7 - 200.8 |
| .NET | 200.7 - 300.0 |
| .NET Windows | 200.7 - 300.0 |
| .NET Android | 200.7 - 300.0 |
| .NET iOS | 200.7 - 300.0 |
| .NET Framework | 200.7 - 200.8 |
| UWP | 200.7 - 200.8 |
QueryDynamicEntitiesAsync(IEnumerable<string>, CancellationToken)
Returns all dynamic entities with track ID values that match the specified list of track IDs.
Declaration
public Task<DynamicEntityQueryResult> QueryDynamicEntitiesAsync(IEnumerable<string> trackIds, CancellationToken cancellationToken = default)Parameters
| Type | Name | Description |
|---|---|---|
| IEnumerable<string> | trackIds | Unique dynamic entity track IDs to query for. |
| CancellationToken | cancellationToken | A cancellation token that can be used to cancel the operation. |
Returns
| Type | Description |
|---|---|
| Task<DynamicEntityQueryResult> | The DynamicEntityQueryResult that contains all dynamic entities with track ID values that match the specified list of track IDs. |
Remarks
Use this method to query for dynamic entities from the data source that have track ID values matching the specified track IDs.
The track ID is an attribute value in a DynamicEntityDataSource that uniquely identifies a dynamic entity. For an ArcGISStreamService, the track ID attribute is defined by the TrackIdField property. For a custom DynamicEntityDataSource, the track ID attribute is defined by the EntityIdFieldName property.
The returned DynamicEntityQueryResult object can be used to iterate over the query results.
Applies to
Platforms and versions
| Target | Versions |
|---|---|
| .NET | 300 |
| .NET Windows | 300 |
| .NET Android | 300 |
| .NET iOS | 300 |