Method IdentifyLayerAsync

IdentifyLayerAsync(Layer, Point, Double, Boolean)

Initiates an identify operation on the specified layer which will return the single visible topmost geolement only.

Declaration

public Task<IdentifyLayerResult> IdentifyLayerAsync(Layer layer, Point screenPoint, double tolerance, bool returnPopupsOnly)

Parameters

Type	Name	Description
Layer	layer	The layer on which to run the identify.
Xamarin.Forms.Point	screenPoint	The location at which to run identify in screen coordinates.
System.Double	tolerance	The width and height in screen coordinates of the square centered on screen coordinate that will be used in the identify.
System.Boolean	returnPopupsOnly	Controls whether the graphics property of the result is populated.

Returns

Type	Description
Task<IdentifyLayerResult>	A task that represents the asynchronous identify operation on the specified layer. The value of the TResult parameter contains IdentifyLayerResult

Exceptions

Type	Condition
System.ArgumentNullException	layer

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 100.15
Xamarin.Android	100.0 - 100.15
Xamarin.iOS	100.0 - 100.15
UWP	100.0 - 100.15

IdentifyLayerAsync(Layer, Point, Double, Boolean, CancellationToken)

Initiates an identify operation on the specified layer which will return the single visible topmost geolement only.

Declaration

public Task<IdentifyLayerResult> IdentifyLayerAsync(Layer layer, Point screenPoint, double tolerance, bool returnPopupsOnly, CancellationToken cancellationToken)

Parameters

Type	Name	Description
Layer	layer	The layer on which to run the identify.
Xamarin.Forms.Point	screenPoint	The location at which to run identify in screen coordinates.
System.Double	tolerance	The width and height in screen coordinates of the square centered on screen coordinate that will be used in the identify.
System.Boolean	returnPopupsOnly	Controls whether the graphics property of the result is populated.
System.Threading.CancellationToken	cancellationToken	A cancellation token that can be used by other objects or threads to receive notice of cancellation.

Returns

Type	Description
Task<IdentifyLayerResult>	A task that represents the asynchronous identify operation on the specified layer. The value of the TResult parameter contains IdentifyLayerResult

Exceptions

Type	Condition
System.ArgumentNullException	layer

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 100.15
Xamarin.Android	100.0 - 100.15
Xamarin.iOS	100.0 - 100.15
UWP	100.0 - 100.15

IdentifyLayerAsync(Layer, Point, Double, Boolean, Int64)

Initiates an identify operation on the specified layer.

Declaration

public Task<IdentifyLayerResult> IdentifyLayerAsync(Layer layer, Point screenPoint, double tolerance, bool returnPopupsOnly, long maximumResults)

Parameters

Type	Name	Description
Layer	layer	The layer on which to run the identify.
Xamarin.Forms.Point	screenPoint	The location at which to run identify in screen coordinates.
System.Double	tolerance	The width and height in screen coordinates of the square centered on screen coordinate that will be used in the identify.
System.Boolean	returnPopupsOnly	Controls whether the graphics property of the result is populated.
System.Int64	maximumResults	The maximum size of the result set of geoelements.

Returns

Type	Description
Task<IdentifyLayerResult>	A task that represents the asynchronous identify operation on the specified layer. The value of the TResult parameter contains IdentifyLayerResult

Exceptions

Type	Condition
System.ArgumentNullException	layer

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 100.15
Xamarin.Android	100.0 - 100.15
Xamarin.iOS	100.0 - 100.15
UWP	100.0 - 100.15

IdentifyLayerAsync(Layer, Point, Double, Boolean, Int64, CancellationToken)

Initiates an identify operation on the specified layer.

Declaration

public Task<IdentifyLayerResult> IdentifyLayerAsync(Layer layer, Point screenPoint, double tolerance, bool returnPopupsOnly, long maximumResults, CancellationToken cancellationToken)

Parameters

Type	Name	Description
Layer	layer	The layer on which to run the identify.
Xamarin.Forms.Point	screenPoint	The location at which to run identify in screen coordinates.
System.Double	tolerance	The width and height in screen coordinates of the square centered on screen coordinate that will be used in the identify.
System.Boolean	returnPopupsOnly	Controls whether the graphics property of the result is populated.
System.Int64	maximumResults	The maximum size of the result set of geoelements.
System.Threading.CancellationToken	cancellationToken	A cancellation token that can be used by other objects or threads to receive notice of cancellation.

Returns

Type	Description
Task<IdentifyLayerResult>	A task that represents the asynchronous identify operation on the specified layer. The value of the TResult parameter contains IdentifyLayerResult

Exceptions

Type	Condition
System.ArgumentNullException	layer

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 100.15
Xamarin.Android	100.0 - 100.15
Xamarin.iOS	100.0 - 100.15
UWP	100.0 - 100.15