[Solved] ResourcesTypes sort problem

[Robert]

Hello,
  I have a problem with random re-sorting of ResourceTypes collection. In my scenario I have two ResourceTypes in ResourceTypeCollection inserted dynamically at runtime. First ResourceTypes contains user names, second contains row numbers.

User A 
  - Row 1
  - Row 2
  - Row 3
User B
  - Row 1
  - Row 2
  - Row 3
etc.

If I load dynamically at runtime new group of users (User C, User D), the second ResourceTypes (row numbers) are sorted wrong. But  this behavior is random - sometimes it happens after third or fourth load of users' group, sort is also random. Looks like this for example:
User A
  - Row 2
  - Row 1
  - Row 3
User B
  - Row 3
  - Row 2
  - Row 3

    I found it is caused by my CustomGroupHeaderContentTemplateSelector, but i don't know why.  I need ResourceTypes group headers oriented horizontally.
This is my code

CustomGroupHeaderContentTemplateSelector:

using System.Windows;
using Telerik.Windows.Controls;

namespace ScheduleViewTest
{
    public class CustomGroupHeaderContentTemplateSelector : ScheduleViewDataTemplateSelector
    {
        public DataTemplate PersonResourceTemplate { get; set; }
        public DataTemplate RowResourceTemplate { get; set; }

        public override DataTemplate SelectTemplate(object item, DependencyObject container, ViewDefinitionBase activeViewDeifinition)
        {
            string rType = ((Telerik.Windows.Controls.Resource)((System.Windows.Data.CollectionViewGroup)item).Name).ResourceType;
            if (rType == "Person")
            {
                return this.PersonResourceTemplate;
            }
            else if (rType == "Row")
            {
                return this.RowResourceTemplate;
            }
            return base.SelectTemplate(item, container, activeViewDeifinition);
        }
    }
}

XAML:

<UserControl xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"  x:Class="ScheduleViewTest.MainPage"
    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:local="clr-namespace:ScheduleViewTest"
    mc:Ignorable="d"
    d:DesignHeight="768" d:DesignWidth="1024">

    <UserControl.Resources>
        <local:CustomGroupHeaderContentTemplateSelector x:Key="GroupHeaderContentTemplateSelector">
            <local:CustomGroupHeaderContentTemplateSelector.PersonResourceTemplate>
                <DataTemplate>
                    <Border Width="140" Margin="4 4 4 0">
                        <StackPanel Orientation="Vertical">
                            <TextBlock Text="{Binding}" />
                        </StackPanel>
                    </Border>
                </DataTemplate>
            </local:CustomGroupHeaderContentTemplateSelector.PersonResourceTemplate>
            <local:CustomGroupHeaderContentTemplateSelector.RowResourceTemplate>
                <DataTemplate>
                    <Border Width="100" Margin="4 2 4 0" BorderThickness="0">
                        <StackPanel Orientation="Vertical">
                            <TextBlock Text="{Binding}" />
                        </StackPanel>
                    </Border>
                </DataTemplate>
            </local:CustomGroupHeaderContentTemplateSelector.RowResourceTemplate>
        </local:CustomGroupHeaderContentTemplateSelector>

    </UserControl.Resources>
    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="200" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <telerik:RadComboBox Grid.Column="0"
                             HorizontalAlignment="Left" Margin="12,12,0,0" Name="radComboBox1"
                             VerticalAlignment="Top" Width="173" SelectedIndex="0"
                             SelectionChanged="radComboBox1_SelectionChanged">
            <telerik:RadComboBoxItem Content="Group 1" />
            <telerik:RadComboBoxItem Content="Group 2" />
            <telerik:RadComboBoxItem Content="Group 3" />
        </telerik:RadComboBox>
        <telerik:RadScheduleView Grid.Column="1"
                                 Name="ScheduleView"
                                 GroupHeaderContentTemplateSelector="{StaticResource GroupHeaderContentTemplateSelector}">
            <telerik:RadScheduleView.AppointmentsSource>
                <TimelineCollection>
                </TimelineCollection>
            </telerik:RadScheduleView.AppointmentsSource>

            <telerik:RadScheduleView.GroupDescriptionsSource>
                <telerik:GroupDescriptionCollection>
                    <telerik:ResourceGroupDescription ResourceType="Person" />
                    <telerik:ResourceGroupDescription ResourceType="Row" />
                </telerik:GroupDescriptionCollection>
            </telerik:RadScheduleView.GroupDescriptionsSource>
            <telerik:RadScheduleView.ViewDefinitions>
                <telerik:TimelineViewDefinition Orientation="Horizontal" VisibleDays="7" Title="TimeLine" />
            </telerik:RadScheduleView.ViewDefinitions>
        </telerik:RadScheduleView>
    </Grid>
</UserControl>

Code-behind:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Telerik.Windows.Controls;

namespace ScheduleViewTest
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();

            this.GenerateResourceTypes();
        }

        private ResourceTypeCollection _resourceTypes;
        public ResourceTypeCollection ResourcesTypes
        {
            get
            {
                return _resourceTypes;
            }
            set
            {
                _resourceTypes = value;
            }
        }

        private void GenerateResourceTypes()
        {
            ResourceType personType = new ResourceType("Person");
            switch (radComboBox1.SelectedIndex)
            {
                case 0:
                    // Group 1
                    personType.Resources.Add(new Resource("User A"));
                    personType.Resources.Add(new Resource("User B"));
                    personType.Resources.Add(new Resource("User C"));
                    personType.Resources.Add(new Resource("User D"));
                    personType.Resources.Add(new Resource("User E"));
                    break;

                case 1:
                    // Group 2
                    personType.Resources.Add(new Resource("User F"));
                    personType.Resources.Add(new Resource("User G"));
                    personType.Resources.Add(new Resource("User H"));
                    break;

                case 2:
                    // Group 3
                    personType.Resources.Add(new Resource("User I"));
                    personType.Resources.Add(new Resource("User J"));
                    personType.Resources.Add(new Resource("User K"));
                    personType.Resources.Add(new Resource("User L"));
                    break;
            }

            ResourceType rowType = new ResourceType("Row");
            rowType.Resources.Add(new Resource("Office 1"));
            rowType.Resources.Add(new Resource("Office 2"));
            rowType.Resources.Add(new Resource("Office 3"));

            if (this.ResourcesTypes == null)
            {
                this.ResourcesTypes = new ResourceTypeCollection();
            }
            for (int i = ResourcesTypes.Count - 1; i >= 0; i--)
            {
                this.ResourcesTypes[i].Resources.RemoveAll(p => p != null);
                this.ResourcesTypes.RemoveAt(i);
            }
            this.ResourcesTypes.Add(personType);
            this.ResourcesTypes.Add(rowType);

            ScheduleView.ResourceTypesSource = this.ResourcesTypes;
        }

        private void radComboBox1_SelectionChanged(object sender, Telerik.Windows.Controls.SelectionChangedEventArgs e)
        {
            if (radComboBox1 != null)
            {
                this.GenerateResourceTypes();
            }
        }
    }
}

Could you please help me with this?

See also attached pictures.

Thanks
Robert

[Robert]

I found the solution, wrong binding of TextBlock Text.
Corrent binding has to be <TextBlock Text="{Binding Name}" /> 
  instead of <TextBlock Text="{Binding}" />

<local:CustomGroupHeaderContentTemplateSelector x:Key="GroupHeaderContentTemplateSelector">
    <local:CustomGroupHeaderContentTemplateSelector.PersonResourceTemplate>
        <DataTemplate>
            <Border Width="140" Margin="4 4 4 0">
                <StackPanel Orientation="Vertical">
                    <TextBlock Text="{Binding Name}" />
                </StackPanel>
            </Border>
        </DataTemplate>
    </local:CustomGroupHeaderContentTemplateSelector.PersonResourceTemplate>
    <local:CustomGroupHeaderContentTemplateSelector.RowResourceTemplate>
        <DataTemplate>
            <Border Width="30" Margin="4 2 4 0" BorderThickness="0">
                <StackPanel Orientation="Vertical">
                    <TextBlock Text="{Binding Name}" />
                </StackPanel>
            </Border>
        </DataTemplate>
    </local:CustomGroupHeaderContentTemplateSelector.RowResourceTemplate>
</local:CustomGroupHeaderContentTemplateSelector>