SampleRemoveBuildingElement

Overview

This programming manual in C# offers a practical demonstration of how to remove an instance of the IfcBuildingElement class within a model.

Sample code

For example:

var app = new Beaver.BcadApplication();
var doc = app.ActiveDocument;
if (doc == null)
    doc = app.Documents.Add();
var stp = doc.STEPDocument;
var removeInst  = stp.Instnaces.FindInstance(254);
stp.Instnaces.DeleteInstance(removeInst);
var IfcRelContainedInSpatialStructures = stp.Instnaces.FindInstances("IfcRelContainedInSpatialStructure", true);
foreach (ISTEPInstance IfcRelContainedInSpatialStructure in IfcRelContainedInSpatialStructures) {
	var RelatedElements = IfcRelContainedInSpatialStructure.Attributes.AttributeAsAggregate("RelatedElements");
	for (int i = 0; i < RelatedElements.values.Length; i++) {
		if (RelatedElements.values[i].Id == removeInst.Id) {
			RelatedElements.DeleteByIndex(i);
			break;
		}
	}
}
foreach (object view in doc.Views) {
	var view3D = view as BcadView3D;
	if (view3D != null) 
		view3D.Redraw();
}