List of all different IfcEntities in IfcFile

Question

Summary

• i have an ifc file with different IfcEntities like IfcWall, IfcBeam, IfcColumn etc.
• i'm struggling to find a way to list all different entities in this ifc file
• the list should contain every ifcentity occurence just once {"IfcWall", "IfcColumn", "IfcBeam", ...}
• debugged also the code to see if there was any property which held the value i was searching for

My Code:

• i've used the xbim Essential quick start guide
• googled also
• looked through the issues on github

using (var model = IfcStore.Open(_FilePath))
{
    var allInstances = model.Instances;
    var testList = model.Instances.OfType<IIfcBuildingElement>();

    var nameList = new List<string>();
    var objTypeList = new List<string>();
    foreach (var item in testList)
    {
        var objType = item.IsTypedBy;
        var firstObjType = objType.ElementAt(0);
        var relType = firstObjType.RelatingType;

        var name = item.Name;
        nameList.Add(name);
    }
}

What i expect:

• simple list with all IfcEntities
• like {"IfcWall", "IfcColumn", "IfcBeam", ...}

Would appreciate any help

Answer 1

thanks to @martin1cerny

the answer was quite simple:

var testList = model.Instances.OfType<IIfcBuildingElement>().GroupBy(e => e.GetType());

issue/question on github