Master ComboBox with Detail Grid

[underwater]

I am just starting out, and trying to use data binding to display a parent child relationship.

I need to first have the user select in a ComboBox my List of "Currency" objects and display in a Grid the related "CurrencyRates" collection of the selected currency object

I can see the list of currencies in the combo when I bind the ItemsSource property to the DataContext

<telerik:RadComboBox ItemsSource="{Binding}" DisplayMemberPath="Name" x:Name="cboCurrencyList"  />

I am not sure how to get a Grid to show the child collection CurrencyRates.... I've tried the code below but didn't work

Source="{Binding ElementName=cboCurrencyList, Path=SelectedValue}"/>

I am using EF4

[Valeri Hristov]

Hello,

Assuming that the RadComboBox ItemsSource is a collection of Currency objects, then with your configuration the value of the SelectedValue property will be of type Currency. If the Currency type has a property CurrencyRates, the Grid Source should be something like:
Source="{Binding ElementName=cboCurrencyList, Path=SelectedValue.CurrencyRates}"

Instead of SelectedValue you could use SelectedItem with the same result.

Regards,
Valeri Hristov
the Telerik team