CODEWITHSUNDEEP
jsonwindows-phone-7serialization
Stu Ayton
Stu Ayton

Reputation: 489

WP7 Deserialize JSON

I'm new to c# and having problems with the below giving InvalidCastException on the line Addresses address = (Addresses)serializer.ReadObject(e.Result);:

namespace My_App
{
    [DataContract]
    public class Addresses
    {
        [DataMember(Name = "line1")]
        public string line1
        {
            get;
            set;
        }
        [DataMember(Name = "line2")]
        public string line2
        {
            get;
            set;
        }
        [DataMember(Name = "postcode")]
        public string rpostcode
        {
            get;
            set;
        }
        [DataMember(Name = "city")]
        public string city
        {
            get;
            set;
        }
        [DataMember(Name = "state")]
        public string state
        {
            get;
            set;
        }    
    }


    public partial class sim : PhoneApplicationPage
    {

        public sim()
        {

            InitializeComponent();
        }

        private void Button_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
                 var webClient = new WebClient();

                    webClient.OpenReadCompleted += OnOpenReadCompleted;

                    webClient.OpenReadAsync(new Uri("http://www.myurl" UriKind.Absolute));

        } 

    }

    private void OnOpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
    {
            var serializer = new DataContractJsonSerializer(typeof(Addresses));
            Addresses address = (Addresses)serializer.ReadObject(e.Result);

    }

}
}

JSON:

[
    {
        "@type": "accountAddress",
        "line1": " 1",
        "line2": "NORWICH ROAD",
        "postcode": "NR1 1AU",
        "city": "NORWICH",
        "state": "NORFOLK"
    },
    {
        "@type": "accountAddress",
        "line1": " 2",
        "line2": "NORWICH ROAD",
        "postcode": "NR1 1AU",
        "city": "NORWICH",
        "state": "NORFOLK"
    },
    {
        "@type": "accountAddress",
        "line1": " 3",
        "line2": "NORWICH ROAD",
        "postcode": "NR1 1AU",
        "city": "NORWICH",
        "state": "NORFOLK"
    }
]

I need this to be in a suitable format to use in a listpicker object. Any help would be greatly appreciated.

Upvotes: 0

Views: 253

Answers (1)

nkchandra
nkchandra

Reputation: 5557

Problem here is, your JSON has a set of addresses and you are just trying to access only one Address. In other words, your serializer returns a List of Addresses but you are trying to convert it to a single Addresses object.

So change your code to something like this,

List<Addresses> addressList = (List<Addresses>)serializer.ReadObject(e.Result);

And eventually what you need is a list or a collection to bind it to the ListPicker.

Upvotes: 1

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