ArcGIS Pro 2.6 API Reference Guide
CenterAt Method (IGeometryEngine)
Example 

ArcGIS.Core.Geometry Namespace > IGeometryEngine Interface : CenterAt Method
The envelope to center.
x-coordinate of the center.
y-coordinate of the center.
Center the envelope at the specified x and y coordinates.
Syntax
Function CenterAt( _
   ByVal envelope As Envelope, _
   ByVal x As Double, _
   ByVal y As Double _
) As Envelope

Parameters

envelope
The envelope to center.
x
x-coordinate of the center.
y
y-coordinate of the center.

Return Value

The envelope centered at the x and y coordinates.
Exceptions
ExceptionDescription
Envelope is null or empty.
Example
Envelope env = EnvelopeBuilder.CreateEnvelope(1.0, 1.0, 5.0, 5.0);
Envelope centered = GeometryEngine.Instance.CenterAt(env, 2.0, 2.0);

// centered.Center.X = 2.0
// centered.Center.Y = 2.0
// centered.XMin = 0
// centered.YMin = 0
// centered.XMax = 4
// centered.YMax = 4

centered = env.CenterAt(4.0, 3.0);
// centered.Center.X == 4.0
// centered.Center.Y == 3.0
// centered.XMin == 2.0
// centered.YMin == 1.0
// centered.XMax == 6.0
// centered.YMax == 5.0
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

IGeometryEngine Interface
IGeometryEngine Members