Hello Shailendra,

Have you tried using Session to store the items? I made a simple sample for you regarding your requests. In this sample, you could select a node and display the selected node on a label. It also allows you to enable or disable a textbox and radiobuttons. You can download the sample from the attachment below.

Hope this helps.

Best Regards,
Erwin Sanders

Hi Erwin, 

I appriciate your response. I am doing exactly same as you did in sample file. But you didn't use Flypostback settings. My application has more than 2000 nodes so when I select a node to drag drop it takes time and not dragable until it complete node selected index event processing, which makes application lazy and drag and drop is not smooth. Flypostback mode might help application to smooth drag and drop.

I have modified sample and attached it. Its not working, controls are not getting updated values.

Please let me know how Flypostback works.

Regards,

Shailendra Singh