JSON Deserialise multi level C#

Question

I'm serializing a multi-level json object. These are called webinars and each contain information like below. I can access the first level with no problems. I can access the 2nd level (categories >) if I do so like webinars[webinar].categories.TimeZone etc but I can't loop through it. When I try to foreach(category in webinar) {} I get:

CS1579 C# foreach statement cannot operate on variables of type because does not contain a public definition for 'GetEnumerator'

What have I done wrong?

thanks for your help.

SAMPLE JSON

{
  "date": "2017-11-08T02:33:57Z",
  "title": "Craft, The",
  "desc": "Galeazzi's fx l rad, subs for opn fx type 3A/B/C w malunion",
  "startTime": "4:03 AM",
  "endTime": "5:46 PM",
  "categories": {
    "category": "e-learning",
    "timeZone": "Asia/Jakarta",
    "language": "English"
  }
}

Model

public class Rootobject
{
    public Webinar[] Webinars { get; set; }
    public ELearning[] Elearning { get; set; }
}

public class Webinar
{
    public DateTime Date { get; set; }
    public string Title { get; set; }
    public string Desc { get; set; }
    public string StartTime { get; set; }
    public string EndTime { get; set; }
    public WebinarCategories Categories { get; set; }
}

public class WebinarCategories
{
    public string Category { get; set; }
    public string TimeZone { get; set; }
    public string Language { get; set; }
}

What I'm trying to achieve

foreach (var webinar in root.webinars) {
     foreach (var category in webinar) {

            <button href="javascript:void(0)" class="dropbtn">@category</button>
     }
}

The WebinarCategories Class isn't either an Array or a List. — Mueui
– Mueui, Commented Aug 25, 2017 at 11:56
it doesn't work since your Categories is not type of IENumerable — N1gthm4r3
– N1gthm4r3, Commented Aug 25, 2017 at 11:56

Mighty Badaboom · Accepted Answer · 2017-08-25 12:02:34Z

3

Is pretty simple why this won't work.

If you want to loop through the categories you have to write

foreach (var category in webinar.Categories)

Then will you get an error because WebinarCategories does not implement GetEnumerator because it does not implement IEnumerable. If you want to store a list of categories in your webinar the easiest way would be to change your property like this.

public List<WebinarCategories> Categories { get; set; }

answered Aug 25, 2017 at 12:02

Mighty Badaboom

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1 Comment

Elliott Over a year ago

Thanks! That was exactly my problem.

Vincentw · Accepted Answer · 2017-08-25 11:59:45Z

0

Change public WebinarCategories Categories { get; set; }

to public List<WebinarCategories> Categories { get; set; }

or, if you really want to IEnumerable<WebinarCategories> Categories { get; set; }

answered Aug 25, 2017 at 11:59

Vincentw

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