如何在不更改路由的情况下将参数从视图传递到控制器

Question

I am trying to have a series of buttons that call the same controller function but each passes a different parameter into the controller.

I have been looking around for a bit and most of the solutions say changing the routing config which I do not want to do. I am wondering if there is a different way to do it, or which is at least a standard practice.

<button class="button">Medium Voltage</button>
@Html.ActionLink("Medium Voltage", "GaugeView", "PSA")

[HttpGet]
public ActionResult GaugeView(string LineName)
{
//Do stuff based on which LineName was specified
    return View();
}

I would also like to hide the string that is passing into the function but that is not a requirement.

Answer 1

According document at: https://docs.microsoft.com/en-us/dotnet/api/system.web.mvc.html.linkextensions.actionlink?view=aspnet-mvc-5.2

public static System.Web.Mvc.MvcHtmlString ActionLink (this System.Web.Mvc.HtmlHelper htmlHelper, string linkText, string actionName, string controllerName, object routeValues, object htmlAttributes);

You need to note routeValues parameter.

Answer 2

Just pass the custom value like this:

@{
    var url = Url.Action("GaugeView", "PSA", new { LineName = "value"});
}

<button onclick="window.location.href='@url';">Medium Voltage</button>

@Html.ActionLink("Medium Voltage", "GaugeView", "PSA", new { LineName = "value"}, null)