Output lines with substrings in DataGrid

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C#

WPF

MVVM

DataGrid

Hi! I have viewModel that contain the property

public ObservableCollection<ObladnanModel> Collection { get; set; }

That property bind to datagrid:

<DataGrid HorizontalAlignment="Left" Height="133" Margin="34,52,0,0" VerticalAlignment="Top"
                  ItemsSource="{Binding Collection, Mode=TwoWay }" Width="462"                SelectionChanged="DataGrid_SelectionChanged"
                  AutoGenerateColumns="False"  SelectionMode="Single" RenderTransformOrigin="0.413,0.626" Grid.ColumnSpan="2"  >
            <DataGrid.Columns>
                <DataGridTextColumn  Binding="{Binding Id,Mode=TwoWay }" Header="Id"/>
                <DataGridTextColumn  Binding="{Binding Name,Mode=TwoWay}" Header="Name"/>
                <DataGridTextColumn Binding="{Binding Elektromotors,Mode=TwoWay}" Header="Electromotors">
                </DataGridTextColumn>
            </DataGrid.Columns> 
        </DataGrid>
    </Grid>

Model of property Collection is:

public class ObladnanModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public ObservableCollection<ElectromotoruModel> Elektromotors { get; set; }

        public ObladnanModel(int id, string name, ObservableCollection<ElectromotoruModel> electromotors)
        {
            this.Id = id;
            this.Name = name;
            this.Elektromotors = electromotors;
        }
    }

and

public class ElectromotoruModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Marka { get; set; }
    }

But column Electromotors is empty. Can i do something like this

------+-------+--------------+
id    |Name   |Electromotors |
------+-------+--------------+
1     |name1  |Electromotor1 |
      |       +--------------+
      |       |Electromotor2 |
------+-------+--------------+
2     |name2  |Electromotor2 |
      |       +--------------+
      |       |Electromotor5 |
      |       +--------------+
      |       |Electromotor1 |
------+-------+--------------+