Convert json string to class

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Hai I have json string like this

[{"StudentId":"3","RollNo":"1"},{"StudentId":"2","RollNo":"2"},{"StudentId":"1","RollNo":"3"},{"StudentId":"4","RollNo":"4"}]

C#

public class Details
   {
       public string StudentId { get; set; }
       public string RollNo { get; set; }
   }

C#

Details result = JsonConvert.DeserializeObject<details>(str);

but error showing like this

C#

Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'AdmissionService+Details' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.
To fix this error either change the JSON to a JSON object (e.g. {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List<T> that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.
Path '', line 1, position 1.

Can anyone help???

Posted 25-Feb-14 22:38pm

Aswathi Narayan

Updated 25-Feb-14 23:02pm

Sampath Lokuge

v9

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Sampath Lokuge · Answer 1 · 2014-02-25T23:15:00

Solution 1

Please try is as below.

List<Details> data = JsonConvert.DeserializeObject<List<Details>>(jsonString);

NOTE: I hope you're using json.NET.

Posted 25-Feb-14 23:15pm

Sampath Lokuge

Comments

Faisalabadians 26-Feb-14 8:17am

+5
as presented JSON is array then there should be an array or list of Details

Sampath Lokuge 26-Feb-14 8:19am

Yep,Thanks Faisalabadians. :)

Vi(ky · Answer 2 · 2014-02-26T01:45:00

Solution 2

Try this

C#

JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
Details objDetails  = jsonSerializer.Deserialize<details>(jsonInput)
</details>

Posted 26-Feb-14 1:45am

Vi(ky