PKPrasanna Kumar Viswanathan Syncfusion Team May 9, 2016 09:44 AM UTC
Thanks for contacting Syncfusion support.
If the server-side events are not working fine, we suspect that you have not referred ej.webform.min.js file and ScriptManager Control in the Project. So, please ensure that you have referred both the files in your project.
For more information, refer to the below Knowledge Base document.