Question

SITUATION

I am using Trirand JQGrid for MVC[server side] in my proj.

I’ve got more than 5 hundred thousand records in a single table.

I load the data by calling this piece of code. this is what gives 500000 records collection.

IEnumerable<myIndexViewModel> myviewmodel= _allincidents.Select(x => new myIndexViewModel
            {

                IncidentRequestStatus = x.RequestStatus,
                RequestByUserName = x.RequestByUserName,
                Subject = x.Subject

            });     
gridModel.JqGrid.DataBind(myviewmodel.AsQueryable());

JQgrid handles the json based ajax requests very nicely for every next page i click.

PROBLEM

I dont want to load 5 hundred thousand records all together on the page load event as it kills jqgrid.

If i write a stored procedure in the DB for requesting a specific page to be displayed then its gonna load only that page in the myviewmodel collection.

How do i get pages on the fly from the DB when the next page is clicked. is this even possible in jqgrid?

SITUATION 2

Based on the answers from VIJAY and MARK the approach they have shown is absolutely correct but over here the JQGRID for MVC sets up the DATAURL property for making the method call. In this case its the IncidentGridRequest.

How do i send in the page number when the grid next page or previous page is clicked?

incidentModel.IncidentGrid.DataUrl = Url.Action("IncidentGridRequest")

 public JsonResult IncidentGridRequest()
        {
         }

Answer 1

The Trirand jqGrid for ASP.NET MVC is using IQueryable interface inside the JqGrid.DataBind() method to implement pagin, sorting and filtering.

So the key here is to use datasource, which handle these types of operations at the database level (by crafting SQL queries to the database in such a way that only the data required is fetched). All major ORMs have this support, this includes: LINQ-2-SQL, Entity Framework, NHbiernate, LLBLGen.

You just need to use one of this technologies, and past the required context directly to JqGrid.DataBind() method (without extracting the data manually like you do it in your sample).