Hi there,

I'm having issues when changing the DataSource of a UltraComboEditor, databound using the DisplayMember/ValueMember/Value property.

Whether I change the DataSource before the source property or after, the UltraComboEditor always shows no selection after the change (even though the backing object property has been changed and matches an item in the DataSource by ValueMember) and it *looks* like something went wrong and the user has to select from the combo editor again.

How should DataSources for UltraComboEditors be limited in code?

Attached is a small (complete) WinForms app that shows this behavior.

using System;

using System.Diagnostics;

using System.Windows.Forms;

using Infragistics.Win;

using Infragistics.Win.Misc;

using Infragistics.Win.UltraWinEditors;

namespace UltraComboTesting

{

    static class Program

    {

        private static readonly TestingEntity[] _dataSource1 = { new TestingEntity { Name = "First", PropertyId = 1 }, new TestingEntity { Name = "Second", PropertyId = 2 } };

        private static readonly TestingEntity[] _dataSource2 = { new TestingEntity { Name = "Second", PropertyId = 2 } };

        private static readonly TestingEntity _entity = new TestingEntity { PropertyId = 1 };

        private static UltraComboEditor _editor;

        [STAThread]

        static void Main()

        {

            Application.EnableVisualStyles();

            Application.SetCompatibleTextRenderingDefault(false);

            using (var bindingSource = new BindingSource())

            using (var form = new Form())

            {

                bindingSource.DataSource = _entity;

                _editor = new UltraComboEditor

                {

                    Dock = DockStyle.Top,

                    DisplayMember = nameof(TestingEntity.Name),

                    ValueMember = nameof(TestingEntity.PropertyId),

                    DropDownStyle = DropDownStyle.DropDownList,

                    DataSource = _dataSource1

                };

                _editor.DataBindings.Add(nameof(UltraComboEditor.Value), bindingSource, nameof(TestingEntity.PropertyId), true, DataSourceUpdateMode.OnPropertyChanged);

                form.Controls.Add(_editor);

                var button = new UltraButton

                {

                    Dock = DockStyle.Top

                };

                button.Click += ButtonOnClick;

                form.Controls.Add(button);

                Application.Run(form);

            }

        }

        private static void ButtonOnClick(object sender, EventArgs e)

        {

            _editor.DataSource = _dataSource2;

            _entity.PropertyId = 2;

        }

    }

    public class TestingEntity

    {

        private decimal _propertyId;

        public string Name { get; set; }

        public decimal PropertyId

        {

            get { return _propertyId; }

            set

            {

                _propertyId = value;

                Debug.WriteLine($"{nameof(PropertyId)} changed to {value}");

            }

        }

    }

}