How to implement multiple searching in jqGrid

I have a jqGrid which I am using with asp.Net Web Forms , it shows the required information properly from the database , however it shows the search option as well but if I try to search lets say First Name that is Equal to Lijo , it just does not show up that record.The record exists.I know I am missing some stuff required for searching surely , here is the code

jqGrid: using beforeProcessing to populate filterToolbar selection boxes

I am populating three dropdown boxes in my filterToolbar with data from the server, shown in the declaration of prodValues, envValues, and typeValues below. I would like to change my code to perform this operation in the beforeProcessing event and pull the values from the main grid data dump. I already have the server sending what I think is the proper json response to do this:

How do I get jqGrid to work using ASP.NET + JSON on the backend?

ok, I’m back. I totally simplified my problem to just three simple fields and I’m still stuck on the same line using the addJSONData method. I’ve been stuck on this for days and no matter how I rework the ajax call, the json string, blah blah blah…I can NOT get this to work! I can’t even get it to work as a function when adding one row of data manually. Can anyone PLEASE post a working sample of jqGrid that works with ASP.NET and JSON? Would you please include 2-3 fields (string, integer and date preferably?) I would be happy to see a working sample of jqGrid and just the manual addition of a JSON object using the addJSONData method. Thanks SO MUCH!! If I ever get this working, I will post a full code sample for all the other posting for help from ASP.NET, JSON users stuck on this as well. Again. THANKS!!