GridSettingsBase.CustomActionRouteValues Property

Defines the custom callback routing logic by specifying the names of a Controller and an Action which should handle custom callbacks initiated by the MVCxClientGridView.PerformCallback method.

Namespace: DevExpress.Web.Mvc

Assembly: DevExpress.Web.Mvc5.v24.2.dll

Declaration

C#

public object CustomActionRouteValues { get; set; }

VB.NET

Public Property CustomActionRouteValues As Object

Property Value

Type	Description
Object	An object containing the Controller and Action names.

Remarks

Use the client MVCxClientGridView.PerformCallback method if you need to dynamically update the extension by asynchronously going to the server (using AJAX-based callback technology) and perform server-side processing in the specified Action. Via the method’s data parameter, you can pass any information collected on the client to the server for further server processing.

The client PerformCallback method posts back to the server using the callback technology and is handled in an Action specified by the CustomActionRouteValues property. Any data passed via the method’s data parameter can be accessed on the server as a parameter of the specified Action. So, the necessary server-side actions can be performed in the handling Action based upon the value(s) passed from the client.

For instance, you can pass values as a hash table.

Client Script Code:

JS

myGridExtension.PerformCallback({key1: value});

Controller Code:

C#

ActionResult MyAction(int key1){
    ...
}

The extension automatically updates itself (it is re-rendered) after such a custom callback has been sent and processed on the server.

Example

Razor(View)

var grid = Html.DevExpress().GridView(settings =>
{
    settings.Name = "MyGridView";
    settings.CallbackRouteValues = new { Controller = "Home", Action = "GridViewPartial" };
    settings.CustomActionRouteValues = new { Controller = "Home", Action = "CustomGridViewPartial" };

    settings.KeyFieldName = "ID";
    ...
    });
}
@grid.Bind(Model).GetHtml()

C#

public class HomeController : Controller
{
    ...
    public ActionResult CustomGridViewPartial(string selectedItem)
    {
        var model = MyModel.GetDS();
        ViewData["selectedItem"] = selectedItem;
        return PartialView("_GridViewPartial", model);
    }
}