User-939850651 posted
Hi, taiielmehdi
Are you talking about Ajax? It can do all the operations you say on the web form without postback.
Here is a simple example using jQuery Ajax, please refer to:
How to Insert Data into Database without any Postback (Asynchronous) in ASP.NET
And if you want to update data, you could refer to it and make a little modification.
Best regards,
Xudong Peng