Question

Im currently trying to bind the DataGrid.ItemsSource to a custom RowCollection, which implements IList and INotifyCollectionChanged:

Public Class RowCollection(of T)
Implements IList(Of T)
Implements INotifyCollectionChanged
Private _List As New List(Of T)
...

(Sorry for the VB code, I’ll be translating all my code to C# soon.)

Notice the class does not derive from any existing CLR collection. I created my own class because I need to override GetItemAt, in order to implement record paging.
The Collection Internally adds and removes objects from its own private List _List.

Now, I am able to view the items in a DataGrid, but as soon as I double click a cell to edit, I recieve an InvalidOperationException: ‘EditItems’ is not available..

My question is, what other interfaces should I implement in order to make my collection fully compatible with DataGrid?

Answer 1

Here you can read the following:

Editing

By default, you can edit items
directly in the DataGrid. To guarantee
that edits can be committed and
canceled correctly, the objects in the
DataGrid must implement the
IEditableObject interface.
Alternatively, you can set the
IsReadOnly property to true to disable
editing in the DataGrid.

The IEditableObject interface is here
Also see IEditableCollectionView here