| private void setbaseheight(){
 ISceneGraph scenegraph = axSceneControl1.SceneGraph;
 IScene scene = scenegraph.Scene;
 ILayer layer;
 int j;
 
             layer = scene.get_Layer(0);             IRasterLayer rlayer;rlayer = layer as IRasterLayer;
 IRaster raster;
 IRasterSurface rsurface = new RasterSurface();
 ISurface surface;
             raster = (IRaster)rlayer.Raster;             IRasterBandCollection rasterbands = raster as IRasterBandCollection;IRasterBand rasterband = rasterbands.Item(0);
 rsurface.RasterBand = rasterband;
 surface = rsurface as ISurface;
             ILayerExtensions layerextensions = layer as ILayerExtensions;I3DProperties properties = new Raster3DPropertiesClass();
 int i;
 object p3d;
 for (i = 0; i < layerextensions.ExtensionCount; i++)
 {
 p3d = layerextensions.get_Extension(i);
 if (p3d != null)
 {
 properties = (I3DProperties)p3d;
 break;
 }
               }
             properties.BaseOption = esriBaseOption.esriBaseSurface;properties.BaseSurface = surface;
 properties.Apply3DProperties(layer);
 
             scenegraph = scene.SceneGraph;             scenegraph.RefreshViewers();
 }
 http://blog.gisforum.net/u/211/archives/2008/2013.html |