Read FDO Features using Map 3D Geospatial Platform API

By Partha Sarkar

If you are looking for a way to access the FDO features and read the feature attributes in Map 3D using Geospatial Platform API, then the following C#.NET code snippet might be useful to you. This code snippet shows how to use the Geospatial Platform API in AutoCAD Map 3D and access the FDO Features.

// Get the Map Object
AcMapMap currentMap = AcMapMap.GetCurrentMap();
 
// Prompt user to Select Feature in Map
PromptSelectionOptions psop = new PromptSelectionOptions();
psop.MessageForAdding = "Select the FDO Feature in Map 3D to read Data : ";
psop.SingleOnly = true;
PromptSelectionResult psResult = ed.GetSelection(psop);
 
if (psResult.Status == PromptStatus.OK)
{
    SelectionSet selSet = psResult.Value;
 
    // Get Map Selectionset from AutoCAD SelectionSet
    MgSelectionBase mapSelBase = AcMapFeatureEntityService.GetSelection(selSet);
    AcMapLayer mapLayer = AcMapFeatureEntityService.GetLayer(psResult.Value[0].ObjectId);
 
    //Get the ID of the selected Parcel
    MgFeatureReader ftrRdr = mapSelBase.GetSelectedFeatures(mapLayer, mapLayer.FeatureClassName, false);
 
    while (ftrRdr.ReadNext())
    {
        MgClassDefinition cd = ftrRdr.GetClassDefinition();
 
        //this is just an example; change this according to your FDO data field
 
        String ownerName = ftrRdr.GetString("STNAME");
        ed.WriteMessage("n Parcel Owner Name :" + ownerName.ToString());
    }                       
}
trans.Commit();