ASP.net MVC 5从控制器加载HTML.Partial而不是在CSHTML页面上加载

Question

new to MVC so here goes.

I am currently loading up HTML.Partial on my Index.cshtml page like so:

@Html.Partial("~/Views/Switchb/editPerson.cshtml")

However, I am in need of customizing that in the controller depending on the current users category number .

So as an example, if the user has a category of 3 then I would need to do this:

@Html.Partial("~/Views/Switchb/3.cshtml")

Is there any type of call in the "code behind" in the controller that I can use in order to do that? Or would I just need to place the code within the cshtml page and pass its category number via the controller over to the cshtml page?

Answer 1

You can render a partial view from a controller action. You can pass the view name as string.

public ActionResult Switchb(string categoryNumber) {
    var viewModel = new MyViewModel { CategoryNubmer = categoryNumber };
    // additional processing, backend calls, formatting ....
    return PartialView(categoryNumber, viewModel);
}

To call this action from View:

@{
    var routeValues = new RouteValueDictionary(new {
        categoryNumber= "3",
    });
    Html.RenderAction("Switchb", "MyController", routeValues);
}

Answer 2

Determine the category in the controller (via url parameter, from a database, or whatever) and then set that value as a property on your view's Model. Then in your line of code you can do this

@Html.Partial("~/Views/Switchb/" + Model.Category + ".cshtml");