Check All and Uncheck All

[Jon]

Hi.. I have the following.... When I click the parent checkbox the children are not checked and when I uncheck the parent the children are not unchecked... what am i missing.. I see in you examples this appear to work automatically ?   Why doesn't this? thanks again

 

 

<telerikNavigation:RadTreeViewItem x:Name="InBox" Header="InBox" DefaultImageSrc="Images/4Inbox.png" OptionType="CheckList">

 

 

 

 

<telerikNavigation:RadTreeViewItem.ItemTemplate>

 

 

 

<DataTemplate>

 

 

 

<StackPanel Orientation="Vertical">

 

 

 

<TextBlock Text="{Binding NAME}" FontSize="10" />

 

 

 

</StackPanel>

 

 

 

</DataTemplate>

 

 

 

</telerikNavigation:RadTreeViewItem.ItemTemplate>

 

 

 

 

 

</telerikNavigation:RadTreeViewItem>

 

[Valentin.Stoychev]

Hi Jon The Nerd,

Please check this help article:
http://www.telerik.com/help/silverlight/radtreeview-features-checkbox-and-lines-support.html

you need to enable the tri-state mode of the checkboxes in the TreeView.

All the best,
Valentin.Stoychev
the Telerik team

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[Jon]

thanks again!

[Monika Kogler]

Hi,

i need have following problem: in the Checked-Event of the TreeView, i need first to uncheck all items in the tree and then only check on special item (accoring to the currently checked item). and i have to do this programmatically.

Things i have tried:
1. tree.CheckedItems.Clear() => Exception
2. set CheckState for each item in tree.Items to ToggleState.On or ToggleState.Off => StackOverflowException.

So how can i set all items in a tree unchecked or checked?

[Kiril Stanoev]

Hello Monika,

Try clearing the CheckedItems in the PreviewChecked event handler. Please find attached a sample project demonstrating this functionality. Let me know if you have further questions or comments.

Best wishes,
Kiril Stanoev
the Telerik team