Datagrid ColumnStyle MappingName To SubClass of a Collection

I have a custom collection ProductsCollection that contains products
objects.
ProductsCollection is derived from the CollectionBase.
Product object has properties:  name and supplier.

Supplier property is another custom object Supplier.
Supplier object has properties:  name and country.

I want to do custom mapping of the ProductsCollection on datagrid
(System.Windows.Forms.DataGrid).

Her is the pseudocode:

ProductsCollection p = comboBoxCatalog.SelectedItem as ProductsCollection;

DataGridTableStyle style = new DataGridTableStyle();
style.ReadOnly = true;
style.MappingName = p.GetType().Name;// ProductsCollection OK

PropertyDescriptorCollection descriptors =
this.BindingContext[p].GetItemProperties();

//Product.Name mapping OK **********************************
DataGridColumnStyle productName = new
DataGridTextBoxColumn(descriptors["Name"]);

productName.MappingName = "Name";
productName.HeaderText = "Product Name";
style.GridColumnStyles.Add(productName);

//OK "descriptor" exists  ****************
DataGridColumnStyle productSupplier = new
DataGridTextBoxColumn(descriptors["Supplier"]);

//Supplier.Name mapping FAILS **********************************
productSupplier.MappingName = "Supplier.Name";
productSupplier.HeaderText = "Supplier Name";
style.GridColumnStyles.Add(productSupplier);

dataGridCatalogItems.TableStyles.Add(style);

After that my datagrid displays only the "Product Name" column, and the
mapping for the Supplier columns doesn't exists.
Is it possible to somehow properly map the custom collection that contains
custom objects (Supplier) to the datagrid column

Thanks in advance

Sanjin

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Datagrid ColumnStyle MappingName To SubClass of a Collection

nredman
There ya go!
Otavio
I don't think you can do that directly...

One workaround might be to modify the Product Class to expose the Supplier Name as a property if the supplier is set...

A vb example of this class might look like:

Public Class Product
    Inherits System.Object

    Private myName As String = ""
    Private mySupplier As Supplier = Nothing

    Public Sub New()
        MyBase.New()
    End Sub

    Public Sub New(ByVal Name As String, ByVal Supplier As Supplier)
        MyBase.New()
        myName = Name
        mySupplier = Supplier
    End Sub

    Public Property Name() As String
        Get
            Return myName
        End Get
        Set(ByVal Value As String)
            myName = Value
        End Set
    End Property

    Public Property Supplier() As Supplier
        Get
            Return mySupplier
        End Get
        Set(ByVal Value As Supplier)
            mySupplier = Value
        End Set
    End Property

    Public Property SupplierName() As String
        Get
            If Not mySupplier Is Nothing Then
                Return mySupplier.Name
            Else
                Return ""
            End If
        End Get
        Set(ByVal Value As String)
            'You could just make this property ReadOnly
            If Not mySupplier Is Nothing Then
                mySupplier.Name = Value
            End If
        End Set
    End Property

End Class
Kadesh
Thanks :)
Another approach is to override ToString method of the Supplier.
I.e.

Public override string ToString ()
{
Return this.Name;
}

And in the mapping:
...
productSupplier.MappingName = "Supplier";
productSupplier.HeaderText = "Supplier Name";
...
Datagrid ColumnStyle MappingName To SubClass of a Collection

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