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Unplanned
Last Updated: 28 Apr 2026 06:26 by ADMIN
Scheduled for 2026 Q2
Jonathan
Created on: 14 Apr 2026 12:31
Category: DropDownTree
Type: Bug Report
0
DropDownTree OnChange behavior differs from other Telerik input components
The DropDownTree OnChange event fires twice on item selection. Unlike other components like DropDownList or ComboBox, OnChange does not fire on blur. 
3 comments
ADMIN
Dimo
Posted on: 28 Apr 2026 06:26

Hi,

The provided test page contains an invalid configuration. The correct example that exhibits the logged bug should read:

    <TelerikDropDownTree Data="@_treeData"
                         @bind-Value="_selectedValue"
                         ValueField="@nameof(TreeItem.Id)"
                         @bind-ExpandedItems="_expandedItems"
                         OnChange="@OnChange">
    </TelerikDropDownTree>

Regards,
Dimo
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Jonathan
Posted on: 28 Apr 2026 03:30

Here is a basic example. OnChange appears to not fire at all.

https://blazorrepl.telerik.com/cUuIGWOn24frhju706

 

Jonathan
Posted on: 28 Apr 2026 02:29
I didn't write this, in fact my experience is quite different: I've not been able to get OnChange to fire, ever. Not when clicking, typing, onblur, I've never seen it triggered.
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