Problem 1: In the following code I expect the grid to display the value "Digital" in the ComboBoxColumn of the first row. Instead, I have an empty cell.

Problem 2: When I select "Digital" and tab out from the cell I receive the exception at the bottom.

public class ResourceTypes : ObservableCollection

{
public ResourceTypes()
{
this.Add(new ResourceTypeElement {Name = "Printed"});
this.Add(new ResourceTypeElement {Name = "Digital"});
}
}

public class ResourceTypeElement : INotifyPropertyChanged
{
private string name;
public string Name
{
get
{
return this.name;
}
set
{
if (this.name != value)
{
this.name = value;
}
}
}

public event PropertyChangedEventHandler PropertyChanged;
}

public class Resource: INotifyPropertyChanged
{
public ResourceTypeElement Type { get; set; }

public Resource()
{
this.Type = new ResourceTypeElement { Name = "Digital" };
}

public event PropertyChangedEventHandler PropertyChanged;
}

public class ResourceDetailViewModel
{
public ObservableCollection Resources { get; set; }

public ResourceDetailViewModel()
{
this.Resources = new ObservableCollection;
this.Resources.Add(new Resource());
}

}
Xaml:

AutoGenerateColumns="false"
ColumnWidth="*">

IsEnterKeyEditingEnabled="True"
IsF2EditingEnabled="True"
IsMouseActionEditingEnabled="SingleClick"
IsOnCellActiveEditingEnabled="True" />


ItemsSource="{Binding Source={StaticResource ResourceTypes}}"
SelectedValuePath="Name"
DisplayMemberPath="Name"
AllowEditingValidation="False"/>







The exception I receive when I select a combo box item and tab out:

System.Windows.Markup.XamlParseException occurred
Message= [Line: 0 Position: 0]
LineNumber=0
LinePosition=0
StackTrace:
by MS.Internal.XcpImports.CheckHResult(UInt32 hr)
InnerException: System.Collections.Generic.KeyNotFoundException
Message=The given key was not present in the dictionary.
StackTrace:
by System.Collections.Generic.Dictionary`2.get_Item(TKey key)
by System.Windows.ResourceManagerWrapper.GetResourceForUri(Uri xamlUri, Type componentType)
InnerException: