How to remove DataGrid's blank row when binding to a ObservableCollection<T>?

Question

I'm getting nuts here with this:

ObservableCollection<Employee> list = new ObservableCollection<Employee>(); dgEmployees.ItemsSource = list; 

When you debug the list variable, it's empty (list.Count =0), but then I bind it to a DataGrid (WPFToolkit), it shows me a blank row.

In immediate window, for dgEmployees.Items it's showing:

dgEmployees.Items[0] {NewItemPlaceholder} 

and

dgEmployees.Items[0].GetType() {Name = "NamedObject" FullName = "MS.Internal.NamedObject"} [System.RuntimeType]: {Name = "NamedObject" FullName = "MS.Internal.NamedObject"} 

It seems to happen after I've put this Datagrid into a TabControl, but I'm not sure it has something to do with it.

Does anyone know how to remove this blank row?

Answer 1

The same problem persist in WPF 4.0 version of DataGrid, and it is caused by the add-new row which it shows automatically for ObservableCollection ItemsSource. Setting IsReadOnly as True it's too radical IMHO.
I solved it by disabling CanUserAddRows property if you don't need that behavior, but you still want cells to be modified:

CanUserAddRows="False"