Question

I have the following Data class:

class CustomerProducts
{
    public string Id { get; set; }

    public List<ProductId> Products { get; set; }
} 

And the following XAML:

<DataGrid Name="grd_CustomerProducts" ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=my:MainWindow, AncestorLevel=1}, Path=CustomerOverview}" />

NB: CustomerOverview is an ObservableCollection<CustomerProducts> within the Main Window

I am looking to bind the CustomerOverview collection to a DataGrid such that you get the Customer ID and a Count of all the Id’s in Products. e.g:

Id……..| Number Of Products

0001a | 3

bb032 | 0

3rt640 | 99

How can I change my XAML to achieve this, or do I need to implement something else?

Answer 1

Just add columns manually with proper Binding:

<DataGrid Name="grd_CustomerProducts" 
    ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType=my:MainWindow, AncestorLevel=1}, Path=CustomerOverview}"
    AutoGenerateColumns="False">
    <DataGrid.Columns>
                    <DataGridTextColumn Header="ID" 
                                        Binding="{Binding Id}" 
                                        />

                    <DataGridTextColumn Header="Number" 
                                        Binding="{Binding Path=Products.Count}" 
                                        />
    </DataGrid.Columns>
</DataGrid>