ASP.Net MVC: How should query string parameters be passed to Child Actions?

Question

I have a View that invokes a few child controller actions. One of these child actions will check for an optional query-string value, this particular query-string will be an integer and I'm wondering if it's prudent to have this value as a parameter in the child action?

The reason I'm not using a parameter is because the View would then have to parse the query string as an integer and also perform null checks, hence why the child action just checks for the presence of the query string internally.

Is this the recommended approach? Or is it better (and more testable) to have an argument in the action method?

Thanks

Tejs · Accepted Answer · 2012-04-23 20:07:50Z

1

You would simply use Html.Action / Html.RenderAction and pass the data you need specifically to this action method:

 public ActionResult Sample(SomeViewModel model)
 {
     // Do Stuff
 }

And then in your view:

 @Html.Action("Sample", new { model =  new SomeViewModel { Property = "HelloWorld" } });

answered Apr 23, 2012 at 20:07

Tejs

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3 Comments

Mantorok Over a year ago

I'm aware of how to implement it in this way, but I was more interested in what the recommended approach was?

Tejs Over a year ago

That would be the recommended approach. You don't have to use a view model (it can really be any type), but you would want to pass the arguments explicitly from your parent model.

Mantorok Over a year ago

Thanks, that what I essentially wanted to know, still trying to snap out of the Web-Forms way of doing things :-)

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