topic Re: How do I modify the Data Frame Extents from an ArcObjects application in ArcObjects SDK Questions

How do I modify the Data Frame Extents from an ArcObjects application

LarryWilliams — Tue, 19 Jun 2012 16:09:40 GMT

We're upgrading to ArcGIS 10 and we are changing a number of our feature classes and databases. To assist our 2500 users we have written a program that converts old layers to the new layers where possible keeping the symbology etc.

I need a little help in accessing the data frames associated with a map and changing the maximum extent when users click on the zoom out to full extent icon. Going through the object models can be quite a chore.

Could someone tell me which objects I'll need to use?

The program is written in c#.

Re: How do I modify the Data Frame Extents from an ArcObjects application

LarryWilliams — Tue, 19 Jun 2012 17:21:13 GMT

Nevermind. I found it. Its under the ActiveView

MapDocument aoMapTo = new MapDocument();
string mxdFullToFilePath = this.tbOutputFolder.Text + "\\" + fromFileName;
toFileName = fromFileName;
if (aoMapTo.get_IsPresent(mxdFullToFilePath))
{
aoMapTo.Open(mxdFullToFilePath);
}
string toDir = this.tbOutputFolder.Text;
IActiveView aoToActiveView = aoMapTo.ActiveView;
aoToActiveView.FullExtent.Envelope.XMax = 14649;
aoToActiveView.FullExtent.Envelope.YMax = 5678978;
aoToActiveView.FullExtent.Envelope.XMin = -25723;
aoToActiveView.FullExtent.Envelope.YMin = 5631275;

Re: How do I modify the Data Frame Extents from an ArcObjects application

LarryWilliams — Wed, 20 Jun 2012 18:37:46 GMT

I guess I still have a problem. The envelope isn't updateable. The commands run but it has no effect.

Re: How do I modify the Data Frame Extents from an ArcObjects application

LarryWilliams — Wed, 20 Jun 2012 19:58:15 GMT

I finally found this in the ArcObjects SDK 10 Microsoft .NET Framwork

Heres the code in case the link doesn't work.

///<summary>
///Set the extent of the ActiveView to be the maximum extent of a SpatialDomain.
///</summary>
///<param name="spatialReference">An ESRI.ArcGIS.Geometry.ISpatialReference interface that is the input SpatialDomain.</param>
///<param name="activeView">An ESRI.ArcGIS.Carto.IActiveView interface that is the ActiveView for which to recieve the new extent.</param>
///<remarks></remarks>
public void SetMaxExtentOnSpatialDomain(ESRI.ArcGIS.Geometry.ISpatialReference spatialReference, ESRI.ArcGIS.Carto.IActiveView activeView)
{

System.Double xMin = 0;
System.Double xMax = 0;
System.Double yMin = 0;
System.Double yMax = 0;
spatialReference.GetDomain(out xMin, out xMax, out yMin, out yMax);

ESRI.ArcGIS.Geometry.IEnvelope envelope = new ESRI.ArcGIS.Geometry.EnvelopeClass();
envelope.XMax = xMax;
envelope.XMin = xMin;
envelope.YMax = yMax;
envelope.YMin = yMin;

activeView.Extent = envelope;

}

Re: How do I modify the Data Frame Extents from an ArcObjects application

DarrylKlassen — Thu, 17 Oct 2013 22:24:43 GMT

I am trying to read the ActiveView full extent -but am always getting page coordinates as opposed to real world coordinates. Any thoughts?