[CE 10.17.02.61 C#] Element preview for cell

Question

Hi, 
 I am trying to get a preview of the cells in a cell library, 
 I am using the following code to (try and) accomplish this: 
 The calling function in my main view model, which searches for the requested cell by name and finds it (correctly) private void ShowSectionPreview(string selectedSection)
{
 string sectionName = $"Bvl_{selectedSection}";
 CellLibraryInfo selectedCell = CellsManager.Instance.BevelCells.FirstOrDefault(c => c.Name.Equals($"{sectionName}"));
 if (selectedCell != null)
 {
 DgnFile cellFile = selectedCell.File;
 ModelId cellModelId = cellFile.FindModelIdByName(sectionName);
 DgnModel cellModel = selectedCell.File.LoadRootModelById(out StatusInt status, cellModelId);
 //DgnModel cellModel = cellFile.FindLoadedModelById(cellModelId); 
 if (cellModel != null)
 {
 var graphicElementsData = cellModel.GetGraphicElements();
 var cellEle = graphicElementsData.ElementAt(0);
 //Here we add the PreviewUserControl as the child node of the WindowsFormsHost in the xaml
 MainWindow.Instance.PreviewsFormHostAA.Child = new ElementPreviewUserControl(cellEle);
 }
 }

}
 Which in turn passes it on to the Element preview controller, which receives the cell correctly, but instead of drawing the cell only draws a white circle (which is not an element present in the cell itself) public ElementPreviewUserControl(Element ele)
{
 InitializeComponent();
 Instance = this;

 DisplayableElement displayableEle = (DisplayableElement)ele;
 PreviewManager = new ElementPreviewManager(ref displayableEle, Bentley.DgnPlatformNET.MSRenderMode.Wireframe);
 PreviewManager.Dock = DockStyle.Fill;
 PreviewManager.Width = 95;
 PreviewManager.Height = 95;

 ElementPreviewPanel.Controls.Add(PreviewManager);
}

public void DrawPreviewElement(Element ele)
{
 DisplayableElement displayableEle = (DisplayableElement)ele;
 if(displayableEle == null)
 {
 MessageCenter.Instance.ShowErrorMessage("Element to preview is invalid", null, true);
 return;
 }

 Panel panel1 = new Panel();
 panel1.Size = new Size(50, 50);
 panel1.Location = this.Location;
 panel1.BackColor = Color.Cyan;
 panel1.BringToFront();
 ElementPreviewPanel.Controls.Add(panel1);
}
 And finally the OnPaint method where the magic happens public ElementPreviewManager(ref DisplayableElement ele, MSRenderMode renderMode)
{
 DisplayableEle = ele;
 RenderMode = renderMode;
}

protected override void OnPaint(PaintEventArgs e)
{
 base.OnPaint(e);

 ViewFlags viewFlags = ViewInformation.GetDefaultFlags();
 viewFlags.Camera = false;
 viewFlags.RenderMode = (int)RenderMode;
 viewFlags.Grid = false;
 viewFlags.FastCell = true;

 DisplayableEle.CalcElementRange(out DRange3d eleRange);
 DPoint3d origin = eleRange.Low;

 DPoint3d range = DPoint3d.Subtract(eleRange.High, eleRange.Low);
 Rectangle rect = new Rectangle(Location, new Size(95, 95));
 DisplayElemHandle(BytesToIntptr(DisplayableEle.ElementHandle), viewFlags, rect, null, origin, range);
 
}

public static IntPtr BytesToIntptr(byte[] bytes)
{
 int size = bytes.Length;
 IntPtr buffer = Marshal.AllocHGlobal(size);
 Marshal.Copy(bytes, 0, buffer, size);
 return buffer;
}
 However the result isn't what I expected: While the cell itself looks like this: What am I missing/doing wrong here in order to be able to draw the cell? Alternatively I've tried drawing the loose elements, but then I only get the first element in the cell file, and am not sure how I can numerate over and add all elements to the preview handler (which would also be a suitable option for me) Regards, Remy