since I upgraded from V2010.3.1314.35 to V2011.2.712.35, when my application start, my expanders show nothing.
In my XAML I placed component into my expander and I set the IsExpanded property to True but when my application shown, the button of my expander indicate me that he is expanded but his size still like he have nothing inside him. If I click on the button to collapsed the expander and then reclick on the button to expand my expander, everything appear!!!
Whan I was with version V2010.3.1314.35 it was ok!!!
Here is the piece of code in my XAML
<telerik:RadExpander Name="SignCtxSearchExpander" IsExpanded="False" Style="{DynamicResource REF-RadExpanderStyle-Dark}" telerik:RadDockPanel.Dock="Top" Header="{StaticResource SearchFilter}" VerticalAlignment="Top" GotFocus="SignCtxSearchExpander_GotFocus" LostFocus="SignCtxSearchExpander_LostFocus">
<Grid Style="{DynamicResource REF-GridStyle-Dark}">
<telerik:RadDockPanel Style="{DynamicResource REF-RadDockPanelStyle-Dark}">
<Grid Margin="6" telerik:RadDockPanel.Dock="Bottom">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<telerik:RadButton Grid.Column="0" HorizontalAlignment="Right" Name="SignCtxBtnSearchByFilters" Content="{StaticResource Search}" Padding="3" Margin="6,0,6,6" Style="{DynamicResource REF-RadButtonStyle-Dark-Main}" Click="SignCtxSearchByFilters_Click" Height="25" />
<telerik:RadButton Grid.Column="1" HorizontalAlignment="Left" Name="SignCtxBtnResetFilters" Content="{StaticResource Reset}" Padding="3" Margin="6,0,6,6" Style="{DynamicResource REF-RadButtonStyle-Dak-Ligth}" Click="SignCtxResetFilters_Click" Height="25" />
</Grid>
<Grid Margin="6" HorizontalAlignment="Center" Style="{DynamicResource REF-GridStyle-Dark}">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="50" />
<ColumnDefinition Width="Auto" MinWidth="125" />
<ColumnDefinition Width="Auto" MinWidth="100" />
<ColumnDefinition Width="Auto" MinWidth="125" />
<ColumnDefinition Width="Auto" MinWidth="100" />
<ColumnDefinition Width="Auto" MinWidth="125" />
<ColumnDefinition Width="Auto" MinWidth="100" />
<ColumnDefinition Width="Auto" MinWidth="125" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Grid.Row="0" HorizontalAlignment="Right" Margin="1" TextWrapping="Wrap" Text="{StaticResource TranscriptionPeriodFrom}">
<TextBlock.Foreground>
<SolidColorBrush Color="{DynamicResource {x:Static SystemColors.ControlTextColorKey}}"/>
</TextBlock.Foreground></TextBlock>
<TextBlock Grid.Column="0" Grid.Row="1" HorizontalAlignment="Right" Margin="1" TextWrapping="Wrap" Text="{StaticResource PeriodTo}">
<TextBlock.Foreground>
<SolidColorBrush Color="{DynamicResource {x:Static SystemColors.ControlTextColorKey}}"/>
</TextBlock.Foreground></TextBlock>
<TextBlock Grid.Column="2" Grid.Row="0" HorizontalAlignment="Right" Margin="1" TextWrapping="Wrap" Text="{StaticResource Department}">
<TextBlock.Foreground>
<SolidColorBrush Color="{DynamicResource {x:Static SystemColors.ControlTextColorKey}}"/>
</TextBlock.Foreground>:</TextBlock>
<TextBlock Grid.Column="4" Grid.Row="0" HorizontalAlignment="Right" Margin="1" TextWrapping="Wrap" Text="{StaticResource Modality}">
<TextBlock.Foreground>
<SolidColorBrush Color="{DynamicResource {x:Static SystemColors.ControlTextColorKey}}"/>
</TextBlock.Foreground>:</TextBlock>
<TextBlock Grid.Column="2" Grid.Row="1" HorizontalAlignment="Right" Margin="1" TextWrapping="Wrap" Text="{StaticResource Physician}">
<TextBlock.Foreground>
<SolidColorBrush Color="{DynamicResource {x:Static SystemColors.ControlTextColorKey}}"/>
</TextBlock.Foreground>:</TextBlock>
<TextBlock Grid.Column="6" Grid.Row="0" HorizontalAlignment="Right" Margin="1" TextWrapping="Wrap" Text="{StaticResource VisitNumber}">
<TextBlock.Foreground>
<SolidColorBrush Color="{DynamicResource {x:Static SystemColors.ControlTextColorKey}}"/>
</TextBlock.Foreground>:</TextBlock>
<TextBlock Grid.Column="4" Grid.Row="1" HorizontalAlignment="Right" Margin="1" TextWrapping="Wrap" Text="{StaticResource ReqCode}">
<TextBlock.Foreground>
<SolidColorBrush Color="{DynamicResource {x:Static SystemColors.ControlTextColorKey}}"/>
</TextBlock.Foreground>:</TextBlock>
<CheckBox Grid.Column="6" Grid.Row="1" Name="SignCtxUrgent" HorizontalAlignment="Right" VerticalAlignment="Top">Urgent</CheckBox>
<telerik:RadDatePicker Name="SignCtxFromDate" Margin="1" Grid.Row="0" Grid.Column="1" Height="21" SelectionChanged="SignCtxFromDate_SelectionChanged" />
<telerik:RadDatePicker Name="SignCtxToDate" Margin="1" Grid.Row="1" Grid.Column="1" Height="21" SelectionChanged="SignCtxFromDate_SelectionChanged" />
<telerik:RadComboBox Name="SignCtxDepartment" Grid.Column="3" Height="21" Width="175" ClearSelectionButtonVisibility="Visible" ClearSelectionButtonContent="{StaticResource ClearSelection}" />
<telerik:RadComboBox Name="SignCtxPhysician" Grid.Column="3" Grid.Row="1" Height="21" Width="175" ClearSelectionButtonVisibility="Visible" ClearSelectionButtonContent="{StaticResource ClearSelection}" />
<telerik:RadComboBox Name="SignCtxModality" Grid.Column="5" Height="21" Width="175" ClearSelectionButtonVisibility="Visible" ClearSelectionButtonContent="{StaticResource ClearSelection}" />
<telerik:RadMaskedTextBox Name="SignCtxReqCode" Grid.Column="5" Grid.Row="1" Height="21" Width="175" MaskType="None" />
<telerik:RadMaskedTextBox Name="SignCtxVisitNumber" Grid.Column="7" Grid.Row="0" Margin="1" Width="125" MaskType="None" />
</Grid>
</telerik:RadDockPanel>
</Grid>
</telerik:RadExpander>
Thank's