CODEWITHSUNDEEP
c#asp.netasp.net-mvc
BadFeelingAboutThis
BadFeelingAboutThis

Reputation: 14406

Methodology for passing a mix of: list<>, object and primitives to an ASP MVC controller action

I'm fairly new to C#, and am creating my first MVC project, and am having a hard time figuring out the methodology of passing 3 parameters of varying types to a controller action. Here is my controller method:

public ActionResult Create(Notification notification, string hash, list<int> users){
    //code inside method irrelevant...
}

and my Notification model:

public class Notification
{
    public int ID { get; set; }
    public string ApplicationID { get; set; }
    public string Description { get; set; }
    public System.DateTime DateStamp { get; set; }
}

Before I added the List<> parameter it worked fine by having the posted data (or querystring) like so: 

ApplicationID=1&Description=yo&hash=abcdefg

And it magically knew that the two parameters ('ApplicationID' and 'Description') belonged to the notification object. But now I'd like to add in a list<> of ints.

Is this something that can be done and how would you format the data/querystring passed?

Upvotes: 3

Views: 493

Answers (1)

Darin Dimitrov
Darin Dimitrov

Reputation: 1039100

Is this something that can be done

Yes.

and how would you format the data/querystring passed?

Like this:

ApplicationID=1&Description=yo&hash=abcdefg&users=1&users=2&users=3

or if you prefer like this:

ApplicationID=1&Description=yo&hash=abcdefg&users[0]=1&users[1]=2&users[2]=3

Also you might find the following blog post an useful read.

But before transforming your controller action signatures into some spaghettified code and readers of your code having to cycle a couple of screens horizontally in order to see the millions of parameters this action takes, stop the madness and introduce a view model:

public class CreateViewModel
{
    public Notification Notification { get; set; }
    public string Hash { get; set; }
    public List<int> Users { get; set; }
}

and then:

public ActionResult Create(CreateViewModel model)
{
    //code inside method irrelevant...
}

and then:

notification.applicationID=1&notification.description=yo&hash=abcdefg&users[0]=1&users[1]=2&users[2]=3

Upvotes: 3

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