CalculateExtent Method

In This Topic

Calculates the extent for the spatial single table or query layer specified by . This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public void CalculateExtent( 
   FeatureClass featureClass
)

Public Sub CalculateExtent( _
   ByVal featureClass As FeatureClass _
)

Parameters

featureClass: The extent of the feature class that needs to be calculated.

Exceptions

Exception	Description
System.ArgumentNullException	featureClass is null.
System.InvalidOperationException	featureClass was not `originally` opened from a `Database` data store. For example, it was opened from a file or enterprise `geodatabase` data store instead.
ArcGIS.Core.Data.Exceptions.GeodatabaseException	A database-related exception has occurred.

Remarks

When a spatial table (i.e., FeatureClass) or its corresponding definition (i.e., FeatureClassDefinition) is first opened, the FeatureClass object's extent is set to the domain of its spatial reference (i.e., the XMin, YMin, XMax, YMax of the spatial reference's extent). The reason is that depending on the size of a database table, it can be expensive to calculate all the geometries to accurately find the envelope. Thus, if clients truly want to find the accurate extent of a specific feature class, they can do so by calling this method.

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

Database Class
Database Members

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