Making a GET with a FORM - how to set querystring parameters?

Question

I have a controller method like this:

    public ActionResult Create(string project_title)
    {
        return View(new ProjectViewModel()
        {
            Title = project_title
        });
    }

On another page, I want to take the value of a textbox, and send as a querystring parameter to this method.

My view on this page looks like this:

@using (Html.BeginForm("Create", "Project", FormMethod.Get))
{
    <input type="text" id="project_title" name="project_title" placeholder="Title of your project" class="input-lg" />
    <input type="submit" value="Get started" class="btn btn-success btn-lg" />
}

However, while I thought that would work, I get the following error:

No parameterless constructor defined for this object.

Darin Dimitrov · Accepted Answer · 2014-08-28 21:23:30Z

4

I suspect that the error message you are getting has nothing to do with the code you have shown in your question. Probably the ProjectController class in which this Create action is defined has some non-default constructor for which you haven't properly configured your DI framework to inject the correct dependency:

public class ProjectController : Controller
{
    public ProjectController(IFoo foo)
    {
    }

    public ActionResult Create(string project_title)
    {
        return View(new ProjectViewModel()
        {
            Title = project_title
        });
    }
}

If you don't have a default (parameterless) parameterless constructor of your controller ASP.NET MVC default's controller factory won't be able to instantiate this ProjectController unless you are using some DI framework and specify the concrete type to be injected in this constructor.

answered Aug 28, 2014 at 21:23

Darin Dimitrov

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1 Comment

Lars Holdgaard Over a year ago

You are correct. I am starting to setup my windsor framework and forgot to hook it up - duh! You just saved me for a long time debugging this code... (note to self: goto bed sometimes). THANKS!

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