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Error on check All in drop down with checkbox

Thread ID:





123946 May 2,2016 04:24 PM UTC May 3,2016 04:00 PM UTC ASP.NET Web Forms 1
Tags: DropDownList
Asked On May 2, 2016 04:24 PM UTC


I've drop down list items, with enabled check box.

I need an check all inside drop down list, so in this post you explain me how do it


But, when I update to the last version, the check all doesn't work fine.

If I select items without check All, the dropdown Value has correct DataValueField, but when I click the check all, the drop down Value has DataTextField.

I attach an example

Attachment: SyncfusionASPNETApplication1_4ec21911.zip

Keerthana Rajendran [Syncfusion]
Replied On May 3, 2016 04:00 PM UTC

Hi Manolo,


We ensured your sample  and were able to reproduce the issue in our end. So we suggest you to add the following codes in checkAll function of your sample as a work around to resolve it.



function checkAll(sender, check) {

            if (check) {


                var val = sender.element.val();

                sender.value(val == "" ? null : val);







We have created an incident for your reported bug, you can follow the updates for fix through that incident


DT Link: http://www.syncfusion.com/support/directtrac/incidents







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