Hello arnolo,

Thank you for posting in the community!

In order to display labels with values in the columns of the chart what I can suggest is handling FillSceneGraph event of the chart. In this event all the columns in the graph are found and according to their coordinates the position for the value labels are calculated. Please consider that this position for every single label is calculated manually. Afterwards labels are added to the SceneGraph(please note that the position of the label depends of the chart position and its rotation angle). For example:

  protected void UltraChart1_FillSceneGraph(object sender, FillSceneGraphEventArgs e)     {
         TextList.Clear();
         List<MyObject> list = new List<MyObject>();
        foreach (Primitive pr in e.SceneGraph)
         {
            if (pr.Row != -1 && pr.Column != -1)
             {
                 float xMax = ((Infragistics.UltraChart.Core.Primitives.Path)(pr)).GraphicsPath.PathPoints.Max(p => p.X);
                 float xMin = ((Infragistics.UltraChart.Core.Primitives.Path)(pr)).GraphicsPath.PathPoints.Min(p => p.X);
                float yMax = ((Infragistics.UltraChart.Core.Primitives.Path)(pr)).GraphicsPath.PathPoints.Max(p => p.Y);
                float yMin = ((Infragistics.UltraChart.Core.Primitives.Path)(pr)).GraphicsPath.PathPoints.Min(p => p.Y);
                string temp = pr.Value.ToString();
 
                int x = Convert.ToInt32((xMax + xMin) / 2);
                 int y = Convert.ToInt32((yMax + yMin) / 2);
 
                Text textLable = new Text(new Point(x, y), temp);
                 textLable.PE.Fill = Color.Black;
                MyObject obj = new MyObject();
                obj.IntValue = y;
                 obj.IntValue2 = x;
                 obj.TextPrimitive = textLable;
                 obj.TextValue = pr.Value.ToString();
                list.Add(obj);
                 TextList.Add(textLable);
             }
         }
        foreach (Text item in TextList.Distinct())
         {
             int iii = list.Where(p => p.TextValue == item.GetTextString()).Min(s => s.IntValue);
             int iii2 = list.Where(p => p.TextValue == item.GetTextString()).Min(s => s.IntValue2);
            MyObject obj = list.Where(s => s.IntValue == iii).First() as MyObject;
             if (obj != null) e.SceneGraph.Add(obj.TextPrimitive);
         }
     }

I am attaching a sample project for your reference.

Please let me know if you have any questions.