Exapnd all the Tree Nodes loading

[smith]

HI

 I am using Hierarchical Data Binding  to Populate tree View. i want to show all the Tree Nodes  first time loading Itself.

dont want Load on Demand event like that . how to do
pls send example for this

[Miroslav]

Hello smith,

If you want all items to be expanded by default you can set a style that will set their IsExpanded property to true.

If you are binding the TreeView, you will need to set the ItemContainerStyle, like so:

<Style TargetType="nav:RadTreeViewItem" x:Key="TreeViewItemStyle">
    <Setter Property="IsExpanded" Value="True" />
</Style>

<nav:RadTreeView ItemContainerStyle="{StaticResource TreeViewItemStyle}" />

where the nav namespace is:

xmlns:nav="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"

Hopefully this will work in your case.

Kind regards,
Miroslav
the Telerik team

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[Christian]

Thanks Miroslav, this is just what we needed. Unfortunately the ExpandAll() method of the tree view class still does not have any effect whatsoever (RadControls 2009.2.812.1030).