public IActionResult Index(int pageIndex = 1)
{
#region Pager.
if (pageIndex < 0)
{
pageIndex = 1;
}
Pager pager = new Pager();
pager.PageIndex = pageIndex;
pager.PageSize = 100;
pager.SortExpression = "Name";
pager.SortDirection = "DESC";
#endregion
var data = companyService.GetList(pager);
return(View(data));
}