Please refer to the attached gif file.
Workaround: handle the SelectedIndexChanged event and update the DataBoundItem programmatically:
Dim dt As New DataTable
Dim bs As New BindingSource
Sub New()
InitializeComponent()
AddHandler Me.RadDataEntry1.EditorInitializing, AddressOf EditorInitializing
dt.Columns.Add("Id", GetType(Integer))
dt.Columns.Add("Name", GetType(String))
dt.Columns.Add("Type", GetType(DeliveryType))
dt.Rows.Add(1, "Item1", DeliveryType.Type2)
dt.Rows.Add(2, "Item2", DeliveryType.Type3)
dt.Rows.Add(3, "Item3", DeliveryType.Type1)
bs.DataSource = dt
Me.RadDataEntry1.DataSource = bs
Me.RadBindingNavigator1.BindingSource = bs
End Sub
Public Enum DeliveryType
Type1 = 0
Type2 = 1
Type3 = 2
End Enum
Private Sub EditorInitializing(sender As Object, e As Telerik.WinControls.UI.EditorInitializingEventArgs)
Dim ddl As RadDropDownList = TryCast(e.Editor, RadDropDownList)
If ddl IsNot Nothing Then
AddHandler ddl.SelectedIndexChanged, AddressOf SelectedIndexChanged
End If
End Sub
Private Sub SelectedIndexChanged(sender As Object, e As Data.PositionChangedEventArgs)
Dim dataRowView As DataRowView = TryCast(bs.Current, DataRowView)
dataRowView.Row("Type") = e.Position
End Sub