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IsHidden Problem in RadPane with binding

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9 posts, 0 answers

Ravi

97 posts

Member since:
Jun 2012

Posted 16 Apr 2013 Link to this post

Hi There,

I have a problem with RadPanes isHidden property, i want to set IsHidden by using a binding, but when i do this it is not working, but if i set the IsHidden="True" at XAML then its working properly, can you please guide me in this case ?

Thanks in advance,
Srinivas.
Ivo
Admin

390 posts

Posted 18 Apr 2013 Link to this post

Hi Srinivas,

When a RadPane is hidden it is moved out of the visual tree so its DataContext is set to null. When the DataContext is set to null the IsHidden binding is lost and you cannot show it again. However if you explicitly set the DataContext of the RadPane it will not be lost and everything will work as expected. here is sample code:

XAML

<Window.Resources>

    <local:ViewModel x:Key="ViewModel" />

</Window.Resources>

<Grid DataContext="{Binding Source={StaticResource ViewModel}}">

    <Grid.RowDefinitions>

        <RowDefinition Height="22" />

        <RowDefinition />

    </Grid.RowDefinitions>



    <CheckBox Content="Is Hidden" IsChecked="{Binding IsHidden, Mode=TwoWay}" />



    <telerik:RadDocking Grid.Row="1">

        <telerik:RadSplitContainer>

            <telerik:RadPaneGroup>

                <telerik:RadPane Header="Pane 1" DataContext="{StaticResource ViewModel}" IsHidden="{Binding IsHidden, Mode=TwoWay}" />

            </telerik:RadPaneGroup>

        </telerik:RadSplitContainer>

    </telerik:RadDocking>

</Grid>

Greetings,
Ivo
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Robert

271 posts

Member since:
Mar 2011

Posted 18 Oct 2013 Link to this post

Well this answers why I am unable to locate my pane using the following method when the IsHidden property is set.

CustomerOrderDetailsPane customerOrderDetailsPane = this.FindChildByType<CustomerOrderDetailsPane>();

Can you recommend a way to hide a pane but still allow it to be searchable?

Would collapsing the visibility setting work better?

Many thanks,

Rob
George
Admin

1332 posts

Posted 22 Oct 2013 Link to this post

Hello Rob,

You could set the x:Name of the Pane and use it in the code-behind as well. Hope this helps.

Regards,
George
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John

25 posts

Member since:
Aug 2014

Posted 26 Oct 2016 in reply to Ivo Link to this post

Only direct binding works? Because the setter in the style(<Setter Property="IsHidden" Value="True" />) is not being applied:

<t:RadPane HorizontalAlignment="Left" CanUserClose="False" Title="Gates" DataContext="{Binding Active, Source={gui:SubApplicationSelectorRetreiver}}"

           DataContextChanged="RadPane_DataContextChanged">

    <t:RadPane.Style>

        <Style TargetType="t:RadPane" BasedOn="{StaticResource MyPaneStyle}">

            <Setter Property="IsHidden" Value="True" />

            <Style.Triggers>

                <DataTrigger Binding="{Binding Converter={StaticResource typeof}}" Value="{x:Type local:MDVDesignerAdapter}">

                    <Setter Property="IsHidden" Value="False" />

                </DataTrigger>

            </Style.Triggers>

        </Style>

    </t:RadPane.Style>

    <t:RadPane.ContentTemplate>

        <DataTemplate>

            <local:MDVToolbox />

        </DataTemplate>

    </t:RadPane.ContentTemplate>

</t:RadPane>
Nasko
Admin

727 posts

Posted 28 Oct 2016 Link to this post

Hello John,

The observed by you behavior is an expected one when DataTriggers are used. When the Pane is visualized (IsHidden is True) the property takes precedence over the the DataTrigger - you could no longer change its value through the Trigger.

We suggest you to consider using direct binding for the IsHidden property instead of using Triggers to change its value.

Hope the provided information will be helpful for you.

Regards,
Nasko
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AEDT developer

11 posts

Member since:
May 2012

Posted 20 Apr 2017 in reply to Ivo Link to this post

Hi, setting the DataContext of the RadPane doesn't seem to work on the current version of the Telerik RadPane. Any other suggestion instead of using the code-behind and the x:Name to access the property.
Nasko
Admin

727 posts
Posted 21 Apr 2017 Link to this post

Hello Andrea,

The proposed by Ivo approach with setting of the DataContext should be working as expected. Please, check the attached sample that demonstrates how setting of the DataContext for the RadPane is working on our side.

We hope that the sample will be helpful for you.

Regards,
Nasko
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RadDockingWPF-683030.zip
AEDT developer

11 posts

Member since:
May 2012

Posted 21 Apr 2017 in reply to Nasko Link to this post

thank you! this works!

IsHidden Problem in RadPane with binding

Ravi

Ivo

Robert

George

John

Nasko

AEDT developer

Nasko

AEDT developer