We are using RadTreeView with checkboxes and I want to show user an Error message as Please select atleast one node. I m using following code however I m not able to get any error message. I have properly defined IDateError Info object.
<telerik:RadTreeView Grid.Row="1" Name="TreeView" IsVirtualizing="True" IsOptionElementsEnabled="True" ItemsOptionListType="CheckList" ItemsSource="{Binding Children, ValidatesOnDataErrors=True}" ItemTemplate="{StaticResource FamilyTemplate}" />
How should I set it?
1 Answer, 1 is accepted
0
Hello Naga,
Petar Mladenov
the Telerik team
We have previously created a feature request and you can vote for in order to increase its development priority (TreeView: Validation abilities based on INotifyDataErrorInfo interface like in input controls). However, you can use the MouseEnter event and show a MessageBox if the Tree's Items collection is empty. Please let us know if you need more info on this.
Kind regards,Petar Mladenov
the Telerik team
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