Great! Let us know if you have any additional questions or concerns. 

Hi Michael 

I found the solution and it was not where I was looking 

I forgot this  the object in the List that is passed to xamdatagrid

#region Assembly dlu-persistence-api, Version=2.0.9.22, Culture=neutral, PublicKeyToken=null
// C:\Users\Thomas Kleist\source\repos\DLUPersistence-service-api\dlu-persistence-api\bin\Release\dlu-persistence-api.dll
#endregion

using System.Collections.Generic;

namespace dlu_persistence_api.daos
{
public class AviserTilGrid
{
public AviserTilGrid();

public string OrdredeadlineTekst { get; set; }
public string OrdreDeadlineRubrikKl { get; set; }
public byte? OrdreDeadlineRubrikDag { get; set; }
public string OrdredeadlineRubrik { get; set; }
public byte? OrdrecheckSendeDagID { get; set; }
public string OrdrecheckEmail { get; set; }
public int Oplag { get; set; }
public byte? OrdreDeadlineTekstDag { get; set; }
public bool Ophoert { get; set; }
public string Navn { get; set; }
public decimal? MMPris { get; set; }
public decimal? mmPris { get; set; }
public byte? MedlemMaaned { get; set; }
public byte? Medlemaar { get; set; }
public byte MaxDaekningsGrad { get; set; }
public string MaterialeEmail { get; set; }
public string Navn2 { get; set; }
public string OrdreDeadlineTekstKl { get; set; }
public string OrdreEmail { get; set; }
public string OrienteringEmails { get; set; }
public bool VisPaaWWW { get; set; }
public byte? TotalomraadePct { get; set; }
public int? Totalomraade { get; set; }
public string Tlf { get; set; }
public string StamdataEmail { get; set; }
public bool? SendIndevaerendeUge { get; set; }
public string SendetidOrdrecheck { get; set; }
public string SamannonceringsRabat { get; set; }
public string RegionNavn { get; set; }
public string RedaktionEmail { get; set; }
public string PrislisteNavn { get; set; }
public string PrisforespoergselEmails { get; set; }
public byte? PrimaerPct { get; set; }
public int? Primaer { get; set; }
public int? PostNr { get; set; }
public string PostBy { get; set; }
public bool Overfoert { get; set; }
public string MaterialeDeadlineTekstKl { get; set; }
public byte? MaterialeDeadlineTekstDag { get; set; }
public string MaterialedeadlineTekst { get; set; }
public string MaterialeDeadlineRubrikKl { get; set; }
public decimal? Farve4Min { get; set; }
public decimal? Farve4Max { get; set; }
public int FakturaGruppeID { get; set; }
public string Emails { get; set; }
public string Ejerforhold { get; set; }
public string DiMPDelOmraadeKode { get; set; }
public string DagNavn { get; set; }
public int DaekningsGrad { get; set; }
public string BogholderiEmails { get; set; }
public string BilagsbladeEmail { get; set; }
public string Betegnelse { get; set; }
public string AnnonceKontrolEmail { get; set; }
public string Adresse2 { get; set; }
public string CVR { get; set; }
public int BladID { get; set; }
public string AnnonceEmail { get; set; }
public string Adresse { get; set; }
public decimal? Farve4Pris { get; set; }
public string WWWDaekningSomTekst { get; set; }
public decimal? FarveMax { get; set; }
public decimal? FarvePris { get; set; }
public byte? MatGodtBeloeb { get; set; }
public byte? MaterialeDeadlineRubrikDag { get; set; }
public string MaterialedeadlineRubrik { get; set; }
public bool? MaaGiveFarveRabat { get; set; }
public string KontaktpersonerEmails { get; set; }
public string Kontaktperson { get; set; }
public string Koncern { get; set; }
public int Husstande { get; set; }
public string HovedGruppeNavn { get; set; }
public string Hjemmeside { get; set; }
public string GruppeRabat { get; set; }
public bool GiverWebTillaeg { get; set; }
public string GeoKodeNavn { get; set; }
public int FormatTil { get; set; }
public int FormatFra { get; set; }
public string Format { get; set; }
public string Fax { get; set; }
public decimal? FarveMin { get; set; }
public List<webtilLæg> webtillages { get; set; }
}
}

Hello Michael 

This is the Class with the Method SetAviserTilGrid that are suppose to populate the Grid I can see my debug session that there are added data to list var in setAviserTilGrid. 

Please help because I',m goint nuts here

using Caliburn.Micro;
using DDF_sql_services.daos;
using dlu_persistence_api.daos;
using dlu_persistence_api;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using Infragistics.Windows.DataPresenter;

namespace LokalPlanner
{
/// <summary>
/// Interaction logic for MediePlan.xaml
/// </summary>
public partial class MediePlan : Page
{
AviserTilGrid AviserTilGrid { get; set; }
private List<Annoncøer> annoncør { get; set; }
private List<Bureau> Bureau { get; set; }
private BureaoDao bureaoDao;
private AnnonøcerDAO annonøcerDAO;
private DPKuloerDao kuloerDao;
private PlaceringDao placeringDao;
private MediePlanAviserDao aviserDao;
private MediePlanLinjerDao mediePlanLinjerDao;
private MedieplanÆndringerDao medieplanÆndringerDao;
private MediaPlanNrDao mediaPlanNrDao;
private MediePlanDao mediePlanDao;

private System.Collections.ObjectModel.ObservableCollection<List<AviserTilGrid>> aktiveUgeaviserMedAlles = new System.Collections.ObjectModel.ObservableCollection<List<AviserTilGrid>>();
List<AviserTilGrid> aktiveUgeaviserMeds { get; set; }
private int placeringid { get; set; }

private int year { get; set; }
public MediePlan()
{

bureaoDao = new BureaoDao();
annonøcerDAO = new AnnonøcerDAO();
Bureau = bureaoDao.GetListbureauer();
annoncør = annonøcerDAO.GetAnnoncøer();
kuloerDao = new DPKuloerDao();
placeringDao = new PlaceringDao();
aviserDao = new MediePlanAviserDao();
aktiveUgeaviserMeds = new List<AviserTilGrid>();
mediePlanDao = new MediePlanDao();
mediePlanLinjerDao = new MediePlanLinjerDao();
mediaPlanNrDao = new MediaPlanNrDao();
medieplanÆndringerDao = new MedieplanÆndringerDao();
InitializeComponent();
setBureaList();
setAnnoncøerList();
setFarveListe();
setPlacering();
}

private void setPlacering()
{
placeringCombo.DataContext = new { placering = placeringDao.GetPlaceringer()};
}
private void setBureaList()
{
BureauCombo.DataContext = new { bureaus = Bureau };

}

private void setFarveListe()
{
farver.DataContext = new { farver = kuloerDao.GetDPKuloer() };

}
private void setAnnoncøerList()
{
AnnoncørCombo.DataContext = new { annoncøer = annoncør };
AnnoncørCombo.Text = "-Vælg Annoncør-";
}

private void farve4_Click(object sender, RoutedEventArgs e)
{

}

private void farve1_Click(object sender, RoutedEventArgs e)
{
farve1.Visibility = Visibility.Hidden;
farver.Visibility = Visibility.Visible;
}

private void Opret_Click(object sender, RoutedEventArgs e)
{

}

private void TilFøjkMediePlanLinjer()
{

var records = dgMediePlanlinjer.Records;
foreach (var record in records)
{
var item = ((DataRecord)record).DataItem as AviserTilGrid;
if (item != null)
{
var linje = new tblMedieplanLinjer();
var task = mediePlanLinjerDao.CreateOrUpdateMediePlanLinjer(linje);

}
}

}

private void opretMediePlanNr()
{
var table = new tblMedieplanNr();

var res = mediaPlanNrDao.CreateOrUpDateMediePlanNr(table);
if(res.Item2 == 1)
{

}
}

private void opretMediePlanÆndringer()
{

}
private void BureauCombo_SelectionChanged(object sender, SelectionChangedEventArgs e)
{

}

private void AnnoncørCombo_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var an = AnnoncørCombo.SelectedItem as Annoncøer;
if (an.Bill_to_Contact_No_ != "")
{
var res = Bureau.Find(s => s.Company_No_ == an.Bill_to_Contact_No_).Annoncør;
BureauCombo.Text = res;
} else
{
BureauCombo.Text = an.Annoncør;
}
}

private void farver_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
farver.Visibility = Visibility.Hidden;
farve1.Visibility = Visibility.Visible;
}

public void setAviserTilGrid(List<int> bladid)
{
var list = AddAviserTilGrid(bladid);

dgMediePlanlinjer.DataSource = list;
Console.WriteLine(list[0]);
MessageBox.Show("Hej August" + list[0].BogholderiEmails);

}

private List<AviserTilGrid> AddAviserTilGrid(List<int> bladid)
{
foreach (int i in bladid)
{
var res = aviserDao.GetAllUgeAvisTilGrid(i, System.DateTime.Now.Year - 1, 1);
aktiveUgeaviserMeds.Add(res);

}
return aktiveUgeaviserMeds;
}

private int findMediePlanNr()
{
return mediePlanDao.GetLatestMedienr().Item2 ;
}

}
}

And the  XamDataGrid looks like this 

<igWPF:XamDataGrid HorizontalAlignment="Left" Grid.Row="7" VerticalAlignment="Top" Height="518" Width="1764" Grid.ColumnSpan="12" Grid.RowSpan="3" Name="dgMediePlanlinjer" BindToSampleData="False" GroupByAreaLocation="AboveDataArea" Margin="37,0,0,0">
<igWPF:XamDataGrid.FieldSettings >
<igWPF:FieldSettings AllowCrossFieldRecordFiltering="true" AllowRecordFiltering="true" CellClickAction="SelectCell" />
</igWPF:XamDataGrid.FieldSettings>

<igWPF:XamDataGrid.FieldLayouts>

<igWPF:FieldLayout>

<igWPF:FieldLayout.Settings>
<igWPF:FieldLayoutSettings AutoArrangeCells="Never"
AutoGenerateFields="False"/>
</igWPF:FieldLayout.Settings>

<igWPF:TextField Name="Adresse" Label="navn" Visibility="Visible"/>

</igWPF:FieldLayout>

</igWPF:XamDataGrid.FieldLayouts>

</igWPF:XamDataGrid>