How to display a SortedDictionary in DataGrid WPF?

Question

I want to display a sortedDictionary in the dataGrid when the key is int and value is List of ClassType for example value-List of Persons .

For the example:

public MainWindow()
    {
        InitializeComponent();
        SortedDictionary<int, List<Person>> Sd1 = new SortedDictionary<int,List<Person>>();
        Person p1 = new Person("htryh");
        Person p2 = new Person("juyik");
        List<Person> PL = new List<Person>();
        PL.Add(p1);
        PL.Add(p2);
        Sd1.Add(1, PL);
        dt1.ItemsSource = Sd1;

    }
}
class Person
{
    public string Name { get; set; }
    public Person(string name)
    {
        Name = name;
    }
}

In the dataGrid in the column " Key " i see the int , but in the column " value " i see: (Collection). How do i solve this?? Thanks.

Answer 1

Set AutoGenerateColumns to False on dataGrid and provide your own set of columns.

<DataGrid x:Name="dt1" AutoGenerateColumns="False" IsReadOnly="True">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Key" Binding="{Binding Key}"/>
        <DataGridTemplateColumn Header="Value">
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <ComboBox ItemsSource="{Binding Value}"
                                IsSynchronizedWithCurrentItem="True"
                                DisplayMemberPath="Name"/>
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>
    </DataGrid.Columns>
</DataGrid>