ESRI.ArcGIS.ADF.IMS
Union(Envelope,Envelope) Method
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ESRI.ArcGIS.ADF.IMS.Geometry Namespace > Envelope Class > Union Method : Union(Envelope,Envelope) Method

Visual Basic (Declaration)

Visual Basic (Usage)

C#

env1

env2

Static method that constructs an envelope that surrounds the extents of the input envelopes.

Syntax

Visual Basic (Declaration)
Public Overloads Shared Function Union( _ ByVal env1 As Envelope, _ ByVal env2 As Envelope _ ) As Envelope

Visual Basic (Usage)	Copy Code
Dim env1 As Envelope Dim env2 As Envelope Dim value As Envelope value = Envelope.Union(env1, env2)

C#
public static Envelope Union( Envelope env1, Envelope env2 )

Parameters

env1
env2

Return Value

Envelope that surrounds the two input envelopes.

Example

The following example unions the current map extent with a newly created envelope, and sets the map extent to the new envelope. The code assumes an existing MapView object.

C#	Copy Code
ESRI.ArcGIS.ADF.IMS.Geometry.Envelope mapEnvelope = mapView.Extent; ESRI.ArcGIS.ADF.IMS.Geometry.Envelope envelope2 = new ESRI.ArcGIS.ADF.IMS.Geometry.Envelope(23, -26, 27, -18); ESRI.ArcGIS.ADF.IMS.Geometry.Envelope unionEnvelope = ESRI.ArcGIS.ADF.IMS.Geometry.Envelope.Union(mapEnvelope, envelope2); mapView.Extent = unionEnvelope;

Copy Code

ESRI.ArcGIS.ADF.IMS.Geometry.Envelope mapEnvelope = mapView.Extent;
 
ESRI.ArcGIS.ADF.IMS.Geometry.Envelope envelope2 = new ESRI.ArcGIS.ADF.IMS.Geometry.Envelope(23, -26, 27, -18);
 
ESRI.ArcGIS.ADF.IMS.Geometry.Envelope unionEnvelope = ESRI.ArcGIS.ADF.IMS.Geometry.Envelope.Union(mapEnvelope, envelope2);
 
mapView.Extent = unionEnvelope;

Visual Basic	Copy Code
Dim mapEnvelope As ESRI.ArcGIS.ADF.IMS.Geometry.Envelope _ = mapView.Extent Dim envelope2 As New _ ESRI.ArcGIS.ADF.IMS.Geometry.Envelope(23, -26, 27, -18) Dim unionEnvelope As ESRI.ArcGIS.ADF.IMS.Geometry.Envelope _ = ESRI.ArcGIS.ADF.IMS.Geometry.Envelope.Union(mapEnvelope, envelope2) mapView.Extent = unionEnvelope

Visual Basic

Copy Code

Dim mapEnvelope As ESRI.ArcGIS.ADF.IMS.Geometry.Envelope _
    = mapView.Extent
 
Dim envelope2 As New _
    ESRI.ArcGIS.ADF.IMS.Geometry.Envelope(23, -26, 27, -18)
 
Dim unionEnvelope As ESRI.ArcGIS.ADF.IMS.Geometry.Envelope _
    = ESRI.ArcGIS.ADF.IMS.Geometry.Envelope.Union(mapEnvelope, envelope2)
 
mapView.Extent = unionEnvelope

Remarks

This method constructs an envelope that surrounds the two input envelopes. The input envelopes do not need to overlap.

This is a static method, and therefore is used without first constructing an instance of Envelope.

Requirements

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family