Is this a bug of Radcombobox when it is inside a dataform?

[Tai]

Hi

I have a dataform with 2 Radcombobox inside:
one is for the Period tables which currently has around 6-7 records now
the other is for the Ledger table which currently has 1 records only

My current problem is that The Ledger combobox works fine in the dataform but the Period combobox doesn't work at all and it always show the error "Period Id isn't in the correct format".

One interesting thing is that i if move the xaml code of the Period radcombobox out of the dataform. Then it works perfectly.
I don't really know what is going on.
Plz help me

<telerik:RadWindow x:Class="SilverFinancials.Windows.JournalPosting"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                   xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
                   xmlns:helper="clr-namespace:SilverFinancials.Helpers"
    xmlns:SilverFinancials="clr-namespace:SilverFinancials"
                   xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit"
    mc:Ignorable="d" Width="825" Height="512"
    d:DesignHeight="462" d:DesignWidth="818">

    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.Resources>
            <helper:PeriodList x:Key="periodList"/>
            <helper:LedgerList x:Key="ledgerList" />
        </Grid.Resources>
        <StackPanel Orientation="Vertical">
            <SilverFinancials:ToolBar x:Name="DocumentManagementToolBar" />
            <toolkit:DataForm x:Name="documentDF" AutoGenerateFields="True"   CommandButtonsVisibility="None" Height="248">
                <toolkit:DataForm.EditTemplate>

                    <DataTemplate>
                        <StackPanel Orientation="Vertical">
<TextBlock   Name="periodLabel" Text="Period:" Margin="82,0,0,0" />
                            <telerik:RadComboBox IsEnabled="False"  Name="periodRCB"  ItemsSource="{Binding Source={StaticResource periodList},Path=ListPeriodsByActive}" DisplayMemberPath="PeriodCode" SelectedValuePath="PeriodId"
                                     SelectedValue="{Binding PeriodId,Mode=TwoWay}"   Width="78" Margin="21,0,0,0" />


                                <TextBlock   Name="ledgerIdLabel" Text="Ledger Id:" Margin="81,0,0,0" />
                                <telerik:RadComboBox   IsEnabled="False" Name="ledgerIdRCB" VerticalAlignment="Center" Width="78"
                                    ItemsSource="{Binding Source={StaticResource ledgerList},Path=ListLedgersByBalancing}" DisplayMemberPath="LedgerCode" SelectedValuePath="LedgerId"
                                     SelectedValue="{Binding LedgerId,Mode=TwoWay,ValidatesOnDataErrors=True,NotifyOnValidationError=True}" Margin="3,0,0,0" />


 </StackPanel>
                    </DataTemplate>
                </toolkit:DataForm.EditTemplate>
            </toolkit:DataForm>



        </StackPanel>
    </Grid>
</telerik:RadWindow>

my code behind

using Telerik.Windows.Controls;
using SilverFinancials.Windows.Posting.Journal_Posting;
using System.ServiceModel.DomainServices.Client;
using SilverFinancials.Web.Services;
using SilverFinancials.Web.Models;
using System.Linq;
using System.Windows;

using System.Windows.Data;
using System;
using System.Windows.Controls;
using System.Windows.Input;
using System.Collections.ObjectModel;

namespace SilverFinancials.Windows
{
    public partial class JournalPosting : RadWindow
    {
        private DocumentContext document_ctx = new DocumentContext();

        private ObservableCollection<Document> _documents;
        public JournalPosting()
        {
            InitializeComponent();
            //retrieving the list of businessEntity in order to support it to the Dataform for navigation
            document_ctx.Load(document_ctx.GetDocumentsQuery(), LoadBehavior.RefreshCurrent, (lop) =>
            {
                if (!lop.HasError)
                {
                    _documents = new ObservableCollection<Document>(lop.Entities);
                    //set the dataform itemssource
                   documentDF.ItemsSource = _documents;





                }
                else
                {
                    MessageBox.Show("Load document failed.");
                    lop.MarkErrorAsHandled();
                }
            }, null);
        }

        private void searchRadBtn_Click(object sender, RoutedEventArgs e)
        {

        }
    }
}

my code for the helper PeriodList and Ledger List

using System.Collections.Generic;
using System.ServiceModel.DomainServices.Client;
using SilverFinancials.Web.Models;
using SilverFinancials.Web.Services;

namespace SilverFinancials.Helpers
{
    public class PeriodList
    {
        private IEnumerable<Period> _ListPeriodsByActive;
        private IEnumerable<Period> _ListPeriods;
        private PeriodsContext periods_ctx = new PeriodsContext();
        public IEnumerable<Period> ListPeriodsByActive
        {
            get
            {
                if (_ListPeriodsByActive == null)
                {
                    EntityQuery<Period> query = periods_ctx.GetPeriodsByActiveQuery();
                    LoadOperation<Period> op = periods_ctx.Load(query);
                    _ListPeriodsByActive = op.Entities;
                }
                return _ListPeriodsByActive;
            }
        }
        public IEnumerable<Period> ListPeriods
        {
            get
            {
                if (_ListPeriods == null)
                {
                    EntityQuery<Period> query = periods_ctx.GetPeriodsQuery();
                    LoadOperation<Period> op = periods_ctx.Load(query);
                    _ListPeriods = op.Entities;
                }
                return _ListPeriods;
            }
        }
    }




public class LedgerList
    {
        private IEnumerable<Ledger> _ListLedgersByBalancing;
        private LedgerContext ledger_ctx = new LedgerContext();
        public IEnumerable<Ledger> ListLedgersByBalancing
        {
            get
            {
                if (_ListLedgersByBalancing == null)
                {
                    EntityQuery<Ledger> query = ledger_ctx.GetLedgersByBalancingQuery();
                    LoadOperation<Ledger> op = ledger_ctx.Load(query);
                    _ListLedgersByBalancing = op.Entities;
                }
                return _ListLedgersByBalancing;
            }
        }
    }



}

My code for the Operation service on the server side

public IQueryable<Period> GetPeriodsByActive()
        {
            return this.ObjectContext.Periods.Where(p => p.Active == true).OrderBy(p=>p.PeriodCode);
        }



 /// <summary>
        /// return Ledgers with balancing = 1
        /// </summary>
        /// <returns></returns>
        public ObjectResult<Ledger> GetLedgersByBalancing()
        {
            return this.ObjectContext.LedgerByBalancing();
        }

[George]

Hi Tai,

Please, refer to the following forum thread - http://www.telerik.com/community/forums/silverlight/combobox/radcombobox-within-dataform-did-not-apply-changes-after-committed.aspx

Also, if you send us a sample project that reproduces the problem it would be very helpful in further investigating the problem. 

Sincerely yours,
George
the Telerik team