[bug report] order proplem when binding to position property

[Alex Fan]

Hi I am using 2011.1.419 version.

Bugs i found:
1, the position property is not behaving correctly. I am expecting the order of items will be 1-7 (even some of them are hidden), but it is not.
2, if you remove binding to Position property and hardcode all items' position from 1 - 7 (or 0 - 6), application will blew up.
3, if you remove binding and use following code in RadTileView, you will find one tile (t6) is missing

<telerik:RadTileViewItem Header="t1" Visibility="Collapsed"/>
<telerik:RadTileViewItem Header="t2" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t3" Visibility="Collapsed"/>
<telerik:RadTileViewItem Header="t4" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t5" Visibility="Collapsed"/>
<telerik:RadTileViewItem Header="t6" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t7" Visibility="Collapsed"/>

Please run this code
xaml:

<UserControl
    x:Class="SilverlightApp.RadTileView.RadTileViewInTabControl"
    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="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <UserControl.Resources>
        <DataTemplate x:Key="itemTemplate">
            <telerik:RadTileView MinimizedColumnWidth="120"
                                 PreservePositionWhenMaximized="True"
                                 DataContext="{Binding Path=Value}">
                <telerik:RadTileViewItem Header="t1" Position="{Binding Path=Position1, Mode=TwoWay}" Visibility="Visible"/>
                <telerik:RadTileViewItem Header="t2" Position="{Binding Path=Position2, Mode=TwoWay}" Visibility="Visible"/>
                <telerik:RadTileViewItem Header="t3" Position="{Binding Path=Position3, Mode=TwoWay}" Visibility="Collapsed"/>
                <telerik:RadTileViewItem Header="t4" Position="{Binding Path=Position4, Mode=TwoWay}" Visibility="Visible"/>
                <telerik:RadTileViewItem Header="t5" Position="{Binding Path=Position5, Mode=TwoWay}" Visibility="Collapsed"/>
                <telerik:RadTileViewItem Header="t6" Position="{Binding Path=Position6, Mode=TwoWay}" Visibility="Visible"/>
                <telerik:RadTileViewItem Header="t7" Position="{Binding Path=Position7, Mode=TwoWay}" Visibility="Collapsed"/>
            </telerik:RadTileView>
        </DataTemplate>
        <DataTemplate x:Key="headerTemplate">
            <ContentPresenter Content="{Binding Path=Key}"/>
        </DataTemplate>
        <Style x:Key="itemStyle" TargetType="telerik:RadTabItem">
            <Setter Property="HeaderTemplate" Value="{StaticResource headerTemplate}"/>
            <Setter Property="ContentTemplate" Value="{StaticResource itemTemplate}"/>
        </Style>
    </UserControl.Resources>

    <Grid x:Name="LayoutRoot" Background="White">
        <telerik:RadTabControl ItemsSource="{Binding}" ItemContainerStyle="{StaticResource itemStyle}">
        </telerik:RadTabControl>
    </Grid>
</UserControl>

cs:

using System.Collections.Generic;
using System.Windows.Controls;

namespace SilverlightApp.RadTileView
{
    using GalaSoft.MvvmLight;

    public partial class RadTileViewInTabControl : UserControl
    {
        public RadTileViewInTabControl()
        {
            InitializeComponent();
            DataContext = new Dictionary<object, object>
                              {
                                  { "111", new TileViewVm() },
                                  { "222", "content 22" },
                              };
        }
    }

    public class TileViewVm : ViewModelBase
    {
        private int _position1;
        public int Position1
        {
            get { return _position1; }
            set
            {
                if (_position1 == value)
                {
                    return;
                }
                _position1 = value;
                RaisePropertyChanged("Position1");
            }
        }

        private int _position2;
        public int Position2
        {
            get { return _position2; }
            set
            {
                if (_position2 == value)
                {
                    return;
                }
                _position2 = value;
                RaisePropertyChanged("Position2");
            }
        }

        private int _position3;
        public int Position3
        {
            get { return _position3; }
            set
            {
                if (_position3 == value)
                {
                    return;
                }
                _position3 = value;
                RaisePropertyChanged("Position3");
            }
        }

        private int _position4;
        public int Position4
        {
            get { return _position4; }
            set
            {
                if (_position4 == value)
                {
                    return;
                }
                _position4 = value;
                RaisePropertyChanged("Position4");
            }
        }

        private int _position5;
        public int Position5
        {
            get { return _position5; }
            set
            {
                if (_position5 == value)
                {
                    return;
                }
                _position5 = value;
                RaisePropertyChanged("Position5");
            }
        }

        private int _position6;
        public int Position6
        {
            get { return _position6; }
            set
            {
                if (_position6 == value)
                {
                    return;
                }
                _position6 = value;
                RaisePropertyChanged("Position6");
            }
        }

        private int _position7;
        public int Position7
        {
            get { return _position7; }
            set
            {
                if (_position7 == value)
                {
                    return;
                }
                _position7 = value;
                RaisePropertyChanged("Position7");
            }
        }
    }
}

[Alex Fan]

and also please please please try this one, surprise for u :)

<telerik:RadTileViewItem Header="t1" Visibility="Collapsed"/>
<telerik:RadTileViewItem Header="t2" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t3" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t4" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t5" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t6" Visibility="Collapsed"/>
<telerik:RadTileViewItem Header="t7" Visibility="Collapsed"/>
<telerik:RadTileViewItem Header="t8" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t9" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t10" Visibility="Visible"/>
<telerik:RadTileViewItem Header="t11" Visibility="Collapsed"/>

[Zarko]

Hello Alex Fan,
Thank you for the bug report. We'll look into in and we'll try to fix it for the Q2 2011 Beta. I've also logged it in our PITS under the name " Incorrect layout when you have multiple collapsed items on initial loading" and it will be ready for tracking tomorrow the latest.
I've updated your telerik account and if you have more questions feel free to ask.

Regards,
Zarko
the Telerik team

[Martin Ennemoser]

This problem just cost me a couple of hours :(

Any chance we will see a fix or a workaround in the next couple of weeks?

[Zarko]

Hello Martin Ennemoser,
Could you please try the latest dlls from Q2, because this problem should be fixed in them?
If you have more questions feel free to ask.

Greetings,
Zarko
the Telerik team