Creating Features

To create a new blank feature, call the FeatureClass.CreateFeature() method. This reserves a unique key or feature identifier (FID) for the feature.

// Get the FeatureClass
Autodesk.Map.IM.Data.FeatureClass myPointClass = 
  myConnection.FeatureClasses["MYPOINT"];
 
// Create a new Feature
Autodesk.Map.IM.Data.Feature myPointFeature = 
  myPointClass.CreateFeature();

Once the feature instance is created, set its properties. For example, you can add geometry to the feature through the Feature.Geometry property:

myPointFeature.Geometry = new Autodesk.Map.IM.Graphic.Point(100, 100);

To insert the new feature into AutoCAD Map 3D (that is, create a new record in the feature class table), use the FeatureClass.InsertFeature() method:

myPointClass.InsertFeature(ref myPointFeature);

To update an existing feature in AutoCAD Map 3D, use the FeatureClass.UpdateFeature() method :

myPointFeature.Geometry = new Autodesk.Map.IM.Graphic.Point(200, 200);
// Now that a property has been changed, the feature needs to 
// be updated.
myPointClass.UpdateFeature(ref myPointFeature);

To delete an existing feature from AutoCAD Map 3D, use the FeatureClass.DeleteFeature() method, which requires the identifier of the feature to be deleted.

bool success = myPointClass.DeleteFeature(myPointFeature.ID);