// Get the position and size of the focus map in the layout. IActiveView activeView = ArcMap.Document.ActiveView; // Make sure ArcMap is in layout view if (!(activeView is IPageLayout)) { MessageBox.Show("Please switch to layout view."); return; } // Look at the page layout as a container and loop through all the elements. IGraphicsContainer graphicsContainer = activeView as IGraphicsContainer; graphicsContainer.Reset(); IElement element = null; while ((element = graphicsContainer.Next()) != null) { // Only work with map frames if (element is IMapFrame) { // Get the map frame's map IMap map = (element as IMapFrame).Map; // Only work with the focus map frame in layout if (map.Equals(ArcMap.Document.FocusMap)) { // Display the map frame's layout position/size // which is in reference to lower left corner. IGeometry geometry = element.Geometry; MessageBox.Show( "Left: " + geometry.Envelope.XMin.ToString() + "\nTop: " + geometry.Envelope.YMax.ToString() + "\nRight: " + geometry.Envelope.XMax.ToString() + "\nBottom: " + geometry.Envelope.YMin.ToString()); } } }