Question

I’m trying to pass some parameters (a couple of strings) from a page to a partial view that is to be rendered in the main page. To do this, I’m passing an anonymously typed object, which keeps giving me a RuntimeBinderException. Given what I’ve tried, I’m not surprised to be getting the error, but I don’t know what else to try.

Views\Home\PageWithPartialView.cshtml

@Html.Partial("DynamicPartialView", new { paramFromPageToPartialView = "value" })

Views\Shared\DynamicPartialView.cshtml

@model dynamic // Doesn't make a difference

@{
    // This is where I need to access and display the parameters 
    // passed from the main page

    // Throws RuntimeBinderException
    // Cannot apply indexing with [] to an expression of type 'object'
    var try1 = Model["paramFromPageToPartialView"];

    // Throws RuntimeBinderException
    // 'object' does not contain a definition for 'paramFromPageToPartialView'
    var try2 = Model.paramFromPageToPartialView;
}

If partial views aren’t the way to do this, I’m open. The partial view has a couple hundred lines of code to produce, so custom HtmlHelpers don’t seem manageable to me.

Answer 1

The ViewBag is designed to solve this kind of problem. Rather than consuming paramFromPageToPartialView in your partial from the Model, consume it from the ViewBag:

Views\Home\PageWithPartialView.cshtml

@{ViewBag.paramFromPageToPartialView = "value";}
@Html.Partial("DynamicPartialView")

Views\Shared\DynamicPartialView.cshtml

@model dynamic // Doesn't make a difference

@{
    var try3 = ViewBag.paramFromPageToPartialView;
}