Cannot Write Group

[OndrejJanota91]

Hello, I am trying to create a simple DWG/DXF with few entities grouped together. However, If I add
group with the entities to the document and open document entities are not grouped. If I read the document with the code it contains group with group does not contain entities. Code is bellow. Am I missing something? thanks for reply.

`using ACadSharp;
using ACadSharp.Entities;
using ACadSharp.IO;
using ACadSharp.Objects;
using ACadSharp.Tables;

namespace ACADDXF
{
class Program
{
static void Main(string[] args)
{
CadDocument doc = new CadDocument(ACadVersion.AC1032);
using (DwgWriter writer = new DwgWriter("testDocumnet22.dwg", doc))
{

            Layer layer = new Layer("MyLayer");
            layer.Color = new Color(0, 153, 0);
            doc.Layers.Add(layer);

            Circle circle = new Circle();
            circle.Center = new CSMath.XYZ(1, 1, 0);
            circle.Radius = 1;
            circle.Normal = new CSMath.XYZ(0, 0, 1);
  
            Line line = new Line();
            line.StartPoint = new CSMath.XYZ(0, 0, 0);
            line.EndPoint = new CSMath.XYZ(2, 2, 0);

            circle.Layer = layer;
            line.Layer = layer;

            doc.Entities.Add(circle);
            doc.Entities.Add(line);

            Group group = new Group();
            group.Name = "MyGroup";
            group.Entities.Add(1, circle);
            group.Entities.Add(2, line);
            group.Selectable = true;

            doc.Groups.Add(group);

            TextEntity text = new TextEntity();
            text.Value = "Hello World!";
            text.Layer = layer;
            text.HorizontalAlignment = TextHorizontalAlignment.Center;
            text.VerticalAlignment = TextVerticalAlignmentType.Middle;
            text.InsertPoint = new CSMath.XYZ(1, 1, 0);
            text.AlignmentPoint = new CSMath.XYZ(10, 10, 0);

            doc.Entities.Add(text);

            writer.Write();

        }

        using (DwgReader reader = new DwgReader("testDocumnet22.dwg"))
        {
            CadDocument doc1 = reader.Read();
            int i = 0;
        }
    }
}

}
`

[DomCR]

Hi @OndrejJanota91,

The Group is not fully implemented, the entities collection are not fully linked to the CadDocument and the handles are wrongly stored.

I'll open a PR to fix it.

Thanks for the report!