Scroll bar problem

[Ye HaoChen]

Hi,

This is treeview code:

<telerik:RadTreeView Grid.Row="2" IsRootLinesEnabled="False" IsLineEnabled="True" ItemsSource="{Binding DisplayDataList}" PreviewSelectionChanged="RadTreeView_PreviewSelectionChanged" telerik:StyleManager.Theme="{StaticResource MetroStyle}" FontFamily="{StaticResource font_global}" HorizontalContentAlignment="Stretch">

<telerik:RadTreeView.ItemTemplate>

<HierarchicalDataTemplate ItemsSource="{Binding TreeNodeList}">

<TextBlock FontSize="16" Text="{Binding TreeNodeID}" />

</HierarchicalDataTemplate>

</telerik:RadTreeView.ItemTemplate>
</telerik:RadTreeView>

And this is tree node modle code:

public class AccountTreeNode
    {
        private Object treeNodeObject;
        public Object TreeNodeObject
        {
            get { return treeNodeObject; }
            set { treeNodeObject = value; }
        }

        private Type treeNodeType;
        public Type TreeNodeType
        {
            get { return treeNodeType; }
            set { treeNodeType = value; }
        }

        private ObservableCollection<AccountTreeNode> treeNodeList;
        public ObservableCollection<AccountTreeNode> TreeNodeList
        {
            get { return treeNodeList; }
            set { treeNodeList = value; Notify("TreeNodeList"); }
        }
    }

In the case of treeview's scrollbar displayed. The scrollbar will be uncontrolled movement when clicked one tree node in the treeview.
And tree node can be selected more than one.

If the scroll bar isn't displayed, the above problems would not have occurred.

[Tina Stancheva]

Hello Ye HaoChen,

Unfortunately I'm not sure how to reproduce this issue and this is why I can't tell for sure what might be causing it. This is why I attached a sample solution which you can modify to better reproduce the issue.

Also, please consider apply UI Virtualizaiton on the RadTreeView control if you're displaying a large amount of items.

Regards,
Tina Stancheva
the Telerik team

[Ye HaoChen]

My WPF radcontrol's version is 2012 SP1.
This is a very early version. Perhaps you fixed it in a later version.

And thank you for your suggestion.