jTable.org

public class DemoController : Controller
{
    //...

    [HttpPost]
    public JsonResult StudentList(int jtStartIndex = 0, int jtPageSize = 0, string jtSorting = null)
    {
        try
        {
            //Get data from database
            int studentCount = _repository.StudentRepository.GetStudentCount();
            List<Student> students = _repository.StudentRepository.GetStudents(jtStartIndex, jtPageSize, jtSorting);

            //Return result to jTable
            return Json(new { Result = "OK", Records = students, TotalRecordCount = studentCount });
        }
        catch (Exception ex)
        {
            return Json(new { Result = "ERROR", Message = ex.Message });
        }
    }

    [HttpPost]
    public JsonResult CreateStudent(Student student)
    {
        try
        {
            if (!ModelState.IsValid)
            {
                return Json(new { Result = "ERROR", Message = "Form is not valid! Please correct it and try again." });
            }

            Student addedStudent = _repository.StudentRepository.AddStudent(student);
            return Json(new { Result = "OK", Record = addedStudent });
        }
        catch (Exception ex)
        {
            return Json(new { Result = "ERROR", Message = ex.Message });
        }
    }

    [HttpPost]
    public JsonResult UpdateStudent(Student student)
    {
        try
        {
            if (!ModelState.IsValid)
            {
                return Json(new { Result = "ERROR", Message = "Form is not valid! Please correct it and try again." });
            }

            _repository.StudentRepository.UpdateStudent(student);
            return Json(new { Result = "OK" });
        }
        catch (Exception ex)
        {
            return Json(new { Result = "ERROR", Message = ex.Message });
        }
    }

    [HttpPost]
    public JsonResult DeleteStudent(int studentId)
    {
        try
        {
            _repository.StudentRepository.DeleteStudent(studentId);
            return Json(new { Result = "OK" });
        }
        catch (Exception ex)
        {
            return Json(new { Result = "ERROR", Message = ex.Message });
        }
    }

    [HttpPost]
    public JsonResult GetCityOptions()
    {
        try
        {
            var cities = _repository.CityRepository.GetAllCities().Select(c => new { DisplayText = c.CityName, Value = c.CityId });
            return Json(new { Result = "OK", Options = cities });
        }
        catch (Exception ex)
        {
            return Json(new { Result = "ERROR", Message = ex.Message });
        }
    }
}

See "Using jTable with ASP.NET MVC" tutorial for detailed usage.
Download all samples from download page.

public partial class PagingAndSorting : System.Web.UI.Page
{
    //...

    [WebMethod(EnableSession = true)]
    public static object StudentList(int jtStartIndex, int jtPageSize, string jtSorting)
    {
        try
        {
            //Get data from database
            int studentCount = _repository.StudentRepository.GetStudentCount();
            List<Student> students = _repository.StudentRepository.GetStudents(jtStartIndex, jtPageSize, jtSorting);

            //Return result to jTable
            return new { Result = "OK", Records = students, TotalRecordCount = studentCount };
        }
        catch (Exception ex)
        {
            return new { Result = "ERROR", Message = ex.Message };
        }
    }

    [WebMethod(EnableSession = true)]
    public static object CreateStudent(Student record)
    {
        try
        {
            var addedStudent = _repository.StudentRepository.AddStudent(record);
            return new { Result = "OK", Record = addedStudent };
        }
        catch (Exception ex)
        {
            return new { Result = "ERROR", Message = ex.Message };
        }
    }

    [WebMethod(EnableSession = true)]
    public static object UpdateStudent(Student record)
    {
        try
        {
            _repository.StudentRepository.UpdateStudent(record);
            return new { Result = "OK" };
        }
        catch (Exception ex)
        {
            return new { Result = "ERROR", Message = ex.Message };
        }
    }

    [WebMethod(EnableSession = true)]
    public static object DeleteStudent(int StudentId)
    {
        try
        {
            _repository.StudentRepository.DeleteStudent(StudentId);
            return new { Result = "OK" };
        }
        catch (Exception ex)
        {
            return new { Result = "ERROR", Message = ex.Message };
        }
    }

    [WebMethod(EnableSession = true)]
    public static object GetCityOptions()
    {
        try
        {
            var cities = _repository.CityRepository.GetAllCities().Select(c => new { DisplayText = c.CityName, Value = c.CityId });
            return new { Result = "OK", Options = cities };
        }
        catch (Exception ex)
        {
            return new { Result = "ERROR", Message = ex.Message };
        }
    }
}

See "Using jTable with ASP.NET Web Forms" tutorial for detailed usage.
Download all samples from download page.