JQuery - Drag and Drop - Web method is calling at every post back.

JQuery - Drag and Drop - Web method is calling at every post back.

Hi ,
 
In our application we are using a JQuery Drag and Drop functionality .
 
We have the below scenerio,
  1. Drag and Drop - Functional logic for resequence order is handled by calling a webmethod on code behind.
  2. While double click over any rows over GridView we have to Highlight the row to Red and . We should do the logical delete on code behind using entity class property. [This Double click logic is handled over GridView_SelectedIndexChanged event]
Even the above function we achived . We are facing one issue while do the  Scenerio 2.  The Issue is When ever we Double click over the grid row. On prior to raise the required Selected Index event over GridView. It starts to call the Webmethod - [Drag and Drop logics], and updates the available logics from webmethod and raises the Event over Gridview.
 
Our Clarification: How to prevent webmethod call on time of each and every post back. The webmethod call should not happen on time of SelectedIndexChanged event.
 
Only we have to raise SelectedIndexChanged event alone.
 
ie., Functionality :
 
Web method - Should call while Drag and Drop. [Working fine]
GridView_SelectedIndexChanged - Event should rise on time of double click over Grid row.
 
Defect is
GridView_SelectedIndexChanged - Web method + Event should rise on time of double click over Grid row.
We want to prevent the Webmethod call on time of every post back.
 
So any one , please let us know if you have any soultions with you.
 
 
Thanks ,
V.S. Senthil ,