How to bind to DataGrid ComboBox Column List<> of List<> of string, one List<string> by cell ( WPF )

[Tigre Pablito]

Hello

I'm learning WPF

I searched and searched on the Internet but didn't find the solution.

I have a List o people. Each person has one or more phone numbers.

I managed to bind all text attributes to the DataGrid, but comboboxes appear empty.

I want ComboBoxes to display, when clicked, all the phone numbers of the selected person (row).

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My data struct is:

public class Person

{

public int ID {get;set;}

public string Name {get;set;}

// all other text attributes

public TelInfo Tels {get;set;}

}

// App.MainList is a List<Person>

public class TelInfo

{

public int ID {get;set;}

public List<TelData> PhoneNbrs {get;set;}

}

public class TelData

{

public int ID {get;set;}

public string Number{get;set;}

}

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My XAML (what reffers to the DataGridComboBoxColumn) is:

<DataGridTemplateColumn Header="Teléfonos" Width="160">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<ComboBox Height="30" SelectedIndex="0"
ItemsSource="{ Binding Path=App.MainList }" DisplayMemberPath="Tels.PhoneNbrs.Number"
SelectedItem="{ Binding Tels }" SelectedValue="{ ID }"
SelectedValuePath="Tels.ID" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

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What is wrong? I suspect it's something in the XAML ...

Thanks in advance for your help

Pablo

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