Method IdentifyGraphicsOverlayAsync

IdentifyGraphicsOverlayAsync(GraphicsOverlay, Point, Double, Boolean)

Initiates an identify operation on the specified graphics overlay which will return the visible topmost graphic.

Declaration

public Task<IdentifyGraphicsOverlayResult> IdentifyGraphicsOverlayAsync(GraphicsOverlay graphicsOverlay, Point screenPoint, double tolerance, bool returnPopupsOnly)

Parameters

Type	Name	Description
GraphicsOverlay	graphicsOverlay	The overlay 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
System.Threading.Tasks.Task<IdentifyGraphicsOverlayResult>	A task that represents the asynchronous identify operation on the specified graphics overlay. The value of the TResult parameter contains IdentifyGraphicsOverlayResult

Exceptions

Type	Condition
System.ArgumentNullException	graphicsOverlay

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

IdentifyGraphicsOverlayAsync(GraphicsOverlay, Point, Double, Boolean, Int64)

Initiates an identify operation on the specified graphics overlay which will return the single visible topmost graphic per overlay only.

Declaration

public Task<IdentifyGraphicsOverlayResult> IdentifyGraphicsOverlayAsync(GraphicsOverlay graphicsOverlay, Point screenPoint, double tolerance, bool returnPopupsOnly, long maximumResults)

Parameters

Type	Name	Description
GraphicsOverlay	graphicsOverlay	The overlay 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 to return.

Returns

Type	Description
System.Threading.Tasks.Task<IdentifyGraphicsOverlayResult>	A task that represents the asynchronous identify operation on the specified graphics overlay. The value of the TResult parameter contains IdentifyGraphicsOverlayResult

Exceptions

Type	Condition
System.ArgumentNullException	graphicsOverlay

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