How to get selected rows on Devexpress MVC GridView

Reference: How to get all GridView selected keys and pass them to a Controller

You can collect all selected values (for example, keys) on the client side via the ASPxClientGridView.GetSelectedFieldValues method and pass them to:

• The GridView callback action via the e.customArgs dictionary (Passing Values to Controller Action Through Callbacks);
• Any controller post action via a hidden input element.

Example code snippet:

<script type="text/javascript">
    var selectedIDs;
    function OnBeginCallback(s, e) {
        //Pass all selected keys to GridView callback action
        e.customArgs["selectedIDs"] = selectedIDs;
    }
    function OnSelectionChanged(s, e) {
        s.GetSelectedFieldValues("PersonID", GetSelectedFieldValuesCallback);
    }
    function GetSelectedFieldValuesCallback(values) {
        //Capture all selected keys
        selectedIDs = "";
        for (var index = 0; index < values.length; index++) {
            selectedIDs += values[index] + ",";
        }
        if (selectedIDs.length > 0)
            selectedIDs = selectedIDs.substring(0, selectedIDs.length - 1);
    }
    function OnClick(s, e) {
        //Show all selected keys on client side
        alert(selectedIDs);
    }
    function OnSubmitClick(s, e) {
        //Write all selected keys to hidden input. Pass them on post action.
        $("#selectedIDsHF").val(selectedIDs);
    }
</script>

Controller

namespace Sample.Controllers {
    public class HomeController : Controller {
        PersonsList list = new PersonsList();

        [HttpGet]
        public ActionResult Index() {
            return View(list.GetPersons());
        }

        [HttpPost]
        public ActionResult Index(string selectedIDsHF) {
            //Get all selected keys from hidden input
            string _selectedIDs = selectedIDsHF;

            return View(list.GetPersons());
        }

        public ActionResult GridViewEditingPartial() {
            //Get all selected keys from e.customArgs on GridView callback
            string _selectedIDs = Request.Params["selectedIDs"];
            ViewData["_selectedIDs"] = _selectedIDs;

            return PartialView(list.GetPersons());
        }

    }
}

Note: The client-side GetSelectedKeysOnPage Method returns key values of selected rows displayed within the current page.

References:
GridView - How to get selected rows as an action parameter
GridView - How to get values of selected rows in the Controller's Action
How do I get my selected GridView rows into a Javascript variable?
DevExpress MVC GridView - How to get cell click event
How to highlight a particular row in a page of a DevExpress MVC GridView?