GridView for ASP.NET MVC - How to Get All GridView Selected Keys and Pass Them to a Controller

This example demonstrates how to get the key values of all GridView selected rows and pass them to a controller.

Set up the GridView, specify its CallbackRouteValues property, and handle the SelectionChanged event. In the event handler, call the GetSelectedFieldValues method to obtain the specified field values.

// Index.cshtml
@Html.Partial("GridViewEditingPartial", Model)

// GridViewEditingPartial.cshtml
@Html.DevExpress().GridView(settings => {
    settings.Name = "grid";
    settings.KeyFieldName = "PersonID";
    settings.CallbackRouteValues = new { Controller = "Home", Action = "GridViewEditingPartial" };

    settings.CommandColumn.Visible = true;
    settings.CommandColumn.ShowSelectCheckbox = true;
    settings.ClientSideEvents.SelectionChanged = "OnSelectionChanged";
    ...
}).Bind(Model).GetHtml()

var selectedIDs;
function OnSelectionChanged(s, e) {
    s.GetSelectedFieldValues("PersonID", GetSelectedFieldValuesCallback);
}
function GetSelectedFieldValuesCallback(values) {
    // Obtain all selected keys
    selectedIDs = values.join(',');
}

Use one of the following approaches to pass the values to the controller:

• Handle the grid's client-side MVCxClientGridView.BeginCallback event. In the handler, assign selected values to the MVCxClientBeginCallbackEventArgs.customArgs argument property to pass them to the server as a request parameter. Handle the grid's CallbackRouteValues.Action method to get all selected field values from the e.customArgs property.

  // GridViewEditingPartial.cshtml
  @Html.DevExpress().GridView(settings => {
    ...
    settings.ClientSideEvents.BeginCallback = "OnBeginCallback";
    ...
  
  // Index.cshtml
  function OnBeginCallback(s, e) {
      e.customArgs["selectedIDs"] = selectedIDs;
  }

  // HomeController.cs
  public ActionResult GridViewEditingPartial() {
      string _selectedIDs = Request.Params["selectedIDs"];
      ViewData["_selectedIDs"] = _selectedIDs;
      
      return PartialView(list.GetPersons());
  }

• In a button's Click event, write all selected values to a hidden input element, and get these values from any controller's post-action.

  // Index.cshtml
  @using(Html.BeginForm("Index", "Home")) {
      @Html.Hidden("selectedIDsHF");
      @Html.DevExpress().Button(settings => {
          settings.Name = "btnSubmit";
          settings.Text = "Submit Form";
          settings.UseSubmitBehavior = true;
          settings.ClientSideEvents.Click = "OnSubmitClick";
      }).GetHtml()
  }

  // HomeController.cs
  public ActionResult Index(string selectedIDsHF) {
      string _selectedIDs = selectedIDsHF;
  
      return View(list.GetPersons());
  }

Documentation

• Passing Values to a Controller Action through Callbacks
• CallbackRouteValues
• SelectionChanged
• GetSelectedFieldValues
• BeginCallback

Files to Look At

• HomeController.cs (VB: HomeController.vb)
• GridViewEditingPartial.cshtml
• Index.cshtml