Is there any particular reason CellEditor in following code will not work. I need to set columns of DataGridControl manually. When I do this columns are displayed properly but editing does not work at all.

I have tested different cell editors (standard and read from resource), set AutoCreateColumns to true/false, surrounded column creation code with BeginInit/EndInit, invoked Items.Refresh() and set all ReadOnly properties to false. Nothing works.

EditableGridTestWindow.xaml:

<Window x:Class="EditableGridTest.EditableGridTestWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:xc="http://schemas.xceed.com/wpf/xaml/datagrid"
    Title="Editable Grid Test" Height="300" Width="400" Loaded="Window_Loaded">
    <DockPanel>
        <xc:DataGridControl x:Name="testEditableDataGrid" />
    </DockPanel>
</Window>

EditableGridTestWindow.xaml.cs:

using System.Windows.Data;
using Xceed.Wpf.DataGrid;

namespace EditableGridTest
{
    public partial class EditableGridTestWindow
    {
        private const int COLUMNS_COUNT = 5;
        private const int ROWS_COUNT = 10;

        private string[][] testData;

        private void LoadSimpleTestData()
        {
            if (testData == null)
            {
                testData = new string[ROWS_COUNT][];

                for (int i = 0; i < ROWS_COUNT; ++i)
                {
                    testData[ i ] = new string[COLUMNS_COUNT];

                    for (int j = 0; j < COLUMNS_COUNT; ++j)
                        testData[ i ][j] = string.Format("{0}-{1}", i, j);
                }
            }

            testEditableDataGrid.ItemsSource = testData;
        }

        private void CreateColumnsManually()
        {
            testEditableDataGrid.BeginInit();
            testEditableDataGrid.Columns.Clear();

            for (int i = 0; i < COLUMNS_COUNT; ++i)
            {
                Column col = new Column(string.Format("Value{0}", i), string.Format("[{0}]", i),
                                        new Binding(string.Format("[{0}]", i)));

                col.CellEditor = CellEditor.TextBoxEditor;

                testEditableDataGrid.Columns.Add(col);
            }

            testEditableDataGrid.AutoCreateColumns = false;
            testEditableDataGrid.EndInit();
        }

        public EditableGridTestWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, System.Windows.RoutedEventArgs e)
        {
            LoadSimpleTestData();

            CreateColumnsManually();
        }
    }
}