JQGrid Dynamic Binding in ASP.net

Question

we are removing older grid with JQGrid.

We want to bind grid from code behind including ColModel and ColNames

Column names and Column Model will be decided run time.

 

we tried out nothing working

1. Using HttpHandler + jQuery Ajax

2. Using WebMethods + jQuery Ajax

 

There is not a single working application on internet.

 

Can anyone help into it?

System: ASPX web form which load list of records from backend.