public void OnEvent(object MapEvent)
{
if (!(MapEvent is MapEvent))
{
return;
}
IMap map = ((MapEvent)MapEvent).Map;
bool firstDataset = (map[0] == null);
List <ExplorerDialogFilter> filters = new List <ExplorerDialogFilter>();
filters.Add(new OpenDataFilter());
ExplorerDialog dlg = new ExplorerDialog("Add data...", filters, true);
if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
List <IDataset> datasets = dlg.Datasets;
FormDatasetProperties datasetProps = new FormDatasetProperties(datasets);
try
{
if (((MapEvent)MapEvent).UserData == null)
{
if (datasetProps.ShowDialog() != System.Windows.Forms.DialogResult.OK)
{
return;
}
}
}
catch // Kann ObjectDisposed Exception werfen...
{
return;
}
Envelope env = null;
foreach (ILayer layer in datasetProps.Layers)
{
ISpatialReference sRef = null;
IEnvelope classEnv = null;
if (layer is IFeatureLayer && ((IFeatureLayer)layer).FeatureClass != null && ((IFeatureLayer)layer).FeatureClass.Envelope != null)
{
sRef = ((IFeatureLayer)layer).FeatureClass.SpatialReference;
classEnv = ((IFeatureLayer)layer).FeatureClass.Envelope;
}
else if (layer is IRasterLayer && ((IRasterLayer)layer).RasterClass != null && ((IRasterLayer)layer).RasterClass.Polygon != null && ((IRasterLayer)layer).RasterClass.Polygon.Envelope != null)
{
sRef = ((IRasterLayer)layer).RasterClass.SpatialReference;
classEnv = ((IRasterLayer)layer).RasterClass.Polygon.Envelope;
}
else if (layer is IWebServiceLayer && ((IWebServiceLayer)layer).WebServiceClass != null && ((IWebServiceLayer)layer).WebServiceClass.Envelope != null)
{
sRef = ((IWebServiceLayer)layer).WebServiceClass.SpatialReference;
classEnv = ((IWebServiceLayer)layer).WebServiceClass.Envelope;
}
if (classEnv != null)
{
if (sRef != null && !sRef.Equals(map.Display.SpatialReference))
{
bool found = false;
foreach (string p in map.Display.SpatialReference.Parameters)
{
if (p.ToLower().Trim() == "+nadgrids=@null")
{
found = false;
}
}
if (found)
{
classEnv = null;
}
else
{
IGeometry geom = GeometricTransformer.Transform2D(classEnv.ToPolygon(0), sRef, map.Display.SpatialReference);
if (geom != null)
{
classEnv = geom.Envelope;
}
else
{
classEnv = null;
}
}
}
if (classEnv != null)
{
if (env == null)
{
env = new Envelope(classEnv);
}
else
{
env.Union(classEnv);
}
}
}
map.AddLayer(layer);
}
//map.AddDataset(dataset, 0);
if (env != null && map.Display != null)
{
if (firstDataset)
{
map.Display.Limit = env;
map.Display.ZoomTo(env);
}
else
{
IEnvelope limit = map.Display.Limit;
limit.Union(env);
map.Display.Limit = limit;
}
}
((MapEvent)MapEvent).drawPhase = DrawPhase.All;
((MapEvent)MapEvent).refreshMap = true;
}
}
