Follow thse steps to use Grid.Mvc.Ajax

1. Include ~/Scripts/gridmvc-ext.js after your ~/Scripts/grimvc.js include.

2. Include ~/Content/ladda-bootstrap/ladda-themeless.min.css CSS after your Bootstrap CSS/LESS include.

3. Include Ladda-bootstrap Javascript via the ~/Scripts/ladda-bootstrap/ladda.min.js
and ~/Scripts/ladda-bootstrap/spin.min.js.

4. Create a view model for you grid data, for example:
public Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
}

5. Add a Razor partial view for your grid data that uses an AjaxGrid<T> as the model type,
Where T is your view model type:

@using GridMvc.Html
@using GridMvc.Sorting
@model Grid.Mvc.Ajax.GridExtensions.AjaxGrid<Models.Person>

@Html.Grid(Model).Columns(columns =>
{
columns.Add(c => c.FirstName);
columns.Add(c => c.LastName);
}).Sortable(true).WithPaging(10)

6. Add a controller action to retrieve the data for the first page of data that includes the Ajax pager HTML:

public JsonResult Persons()
{
var vm = new List<Person>()
{
new Person() { FirstName = "John", LastName = "Doe" }
}
.AsQueryable();
var ajaxGridFactory = new Grid.Mvc.Ajax.GridExtensions.AjaxGridFactory();
var grid = ajaxGridFactory.CreateAjaxGrid(vm, 1, false);
}

7. Add a controller action to retrieve data for paged items that returns a JsonResult without the Ajax page HTML:

public JsonResult PersonsPaged(int page)
{
var vm = new List<Person>()
{
new Person() { FirstName = "John", LastName = "Doe" }
}
.AsQueryable();
var ajaxGridFactory = new Grid.Mvc.Ajax.GridExtensions.AjaxGridFactory();
var grid = ajaxGridFactory.CreateAjaxGrid(vm, page, true);
}

8. Call the ajaxify Grid.Mvc.Ajax JavaScript plug-in method setting the non-paged and paged controller actions and optionally a form
to apply additional filtering to the grid. All input and select elements in the given form will be passed into your paged and non-paged controller actions:

pageGrids.myGrid..ajaxify({
getPagedData: '/Home/Persons',
getData : '/Home/PersonsPaged',
gridFilterForm: $("#gridFilters")
});