[Solved] GridCommand in Update Method

[JULIA]

Hello,

is there a way to get the GridCommand object inside the Update method? I user serverside Sorting and Paging with CustomBinding. After the Update the SortOrder is like on initial load.

Regards,
Timo

[Atanas Korchev]

Hello Timo,

If you are using the built-in binding you don't need the GridCommand. As noted in the documentation you should just use the GridRouteValues() extension method to retain the grid state:

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Save(int id)
{
    ViewData["mode"] = mode;

    //Create a new instance of the EditableProduct class and set its ProductID property.
    EditableProduct product = new EditableProduct
    {
        ProductID = id
    };

    //Perform model binding (fill the product properties and validate it).
    if (TryUpdateModel(product))
    {
        //The model is valid - update the product and redisplay the grid.
        SessionProductRepository.Update(product);

        //GridRouteValues() is an extension method which returns the
        //route values defining the grid state - current page, sort expression, filter etc.
        RouteValueDictionary routeValues = this.GridRouteValues();
        return RedirectToAction("EditingServerSide", routeValues);
    }

    //The model is invalid - render the current view to show any validation errors
    return View("EditingServerSide", SessionProductRepository.All());
}

The GridRouteValues() method is available once you import the Telerik.Web.Mvc.Extensions namespace.

If you must use the grid command - just add a parameter of such type to your action method:

[AcceptVerbs(HttpVerbs.Post)]
[GridAction(GridName="Grid")]
public ActionResult Save(GridCommand command, int id, GridEditMode mode)

Greetings,
Atanas Korchev
the Telerik team

[JULIA]

My Method:

public ActionResult _Update( GridCommand command, int id )

My Grid:

<% Html.Telerik().Grid<ViewModels.WeightViewModel>()
    .Name( "weightGrid" )
    .DataKeys( keys => keys.Add( k => k.WeightId ) )
    .DataBinding( d => d.Ajax().Select( "_Select", "Weight", new { area = "" } )
                               .Update( "_Update", "Weight", new { area = "" } )
                               .Insert( "_Update", "Weight", new { area = "" } )
                               .Delete( "_Delete", "Weight", new { area = "" } )
    )
    .ToolBar( t => t.Insert() )
    .Columns( c =>
    {
        c.Bound( p => p.Date ).Width( 100 ).Format( "{0:d}" );
        c.Bound( p => p.Value ).Width( 100 );
        c.Bound( p => p.Size ).Width( 100 );
        c.Bound( p => p.BodyArea ).Width( 150 ).Sortable( false ).ReadOnly( true );
        c.Command( commands =>
        {
            commands.Edit();
            commands.Delete();
        } ).Width( 120 );
    } )
    .Sortable()
    .EnableCustomBinding( true )
    .Pageable( p => p.Total( ViewData["total"] != null ? ( int )ViewData["total"] : 0 ) )
    .Render(); %>

Now GridCommand.PageSize has always the Value of my Size Property/Column. Why?

Regards,
Timo

[Atanas Korchev]

Hello Timo,

That's because the grid is using the same name as a query string parameter ("size"). The Size property is actually the page size of the grid and you can safely give it a fixed value or ignore it.

You can also try decorating your action method with
[GridAction(GridName="weightGrid")]

Regards,
Atanas Korchev
the Telerik team