public ActionResult DisplayPromotialMaterials(string Sorting_Order, string Search_Data, string Filter_Value, int?Page_No, string OrderType)
{
var materials = hrServices.GetAllMaterials();
int Size_Of_Page = 10;
int No_Of_Page = (Page_No ?? 1);
PromotialMaterialViewModel pVM = new PromotialMaterialViewModel();
pVM.Materials = materials.OrderByDescending(p => p.Id).ToPagedList(No_Of_Page, Size_Of_Page);
pVM.PageCount = (int)Math.Ceiling((double)materials.Count() / Size_Of_Page);
pVM.PageNumber = Page_No ?? 1;
return(View(pVM));
}