如何正确加载MVC中的局部视图？

Question

In my mvc project i have a controller with the following actions:

public ActionResult Index()
    {
        return View(new List<Product>());
    }

The corresponding index view render a partial view with the master grid:

@model System.Collections.Generic.List<TbbModels.Domain.Product>
@Html.Partial("_ProdutoMasterGrid", Model)

This partial view have a submit button and a grid. The client needs to put some data in the form and submit it to that action:

 public ActionResult _ProdutoMasterGrid(string param)
    {
        return PartialView("_ProdutoMasterGrid",
        repository.Compare(param).ToList());
    }

But than i get the grid without the layout. How can i return a partial view with the layout?

Answer 1

You should explicitly return the correct view:

public ActionResult _ProdutoMasterGrid(string param)
{
    return View("Index",
    repository.Compare(param).ToList());
}

This ensures that when you do a post to this action, it returns the index view. I'm supposing here that repository.Compare return a List<Product> as well, since the type needs to match.