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I'm using JSON.NET in .NET 4.0. i receive a json string and try to put it in the class. but an exception happens and i cant solve it. here is my json string:

{ "Records": [ { "TransID": "902473653", "Date": "6/12/2015 10:47:00 AM", "ProductID": "90", "ItemDes": "test", "Amount": "20000", "BankTransactionID": "FM60aW33EavtDcYmXbz5vy/UvUAiQF", "Banktype": "IPG_SAMAN" }, { "TransID": "910920749", "Date": "6/11/2015 11:05:00 AM", "ProductID": "91", "ItemDes": "test", "Amount": "20000", "BankTransactionID": "mAdWPNY++QdcKYepuIvuC4+UdZnQAa", "Banktype": "IPG_SAMAN" }, { "TransID": "81131964", "Date": "11/24/2014 9:08:00 AM", "ProductID": "81", "ItemDes": "test", "Amount": "90000", "BankTransactionID": "123456789012", "Banktype": "USSD_InfoTech" } ] }

my classes:

class Record { public string TransID; public DateTime Date; public string ProductID; public string ItemDes; public string Amount; public string BankTransactionID; public string Banktype; } class Records { public List<Record> data {get;set;} }

my Deserializer code:

Records record; record = new JavaScriptSerializer().Deserialize<Records>(result); foreach (var item in record.data) { textBox1.Text = item.TransID; textBox2.Text = item.Date.ToString(); textBox3.Text = item.ProductID; textBox4.Text = item.Amount; }

but it looks like record is null because null exceptions happen in foreach loop.

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  • Why dont u check using debugger, if record in null? Commented Jul 6, 2015 at 8:33
  • Your Json contains an array named Records, it doesn't have any data element. Your classes do not match your input Commented Jul 6, 2015 at 8:34

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Your List<Record> property needs to be properly named. It should be "Records":

public class RootObject { public List<Record> Records { get; set; } }

This means you'll need to change the class name. In my example, it's called RootObject.

Or, you could annotate with the JsonProperty attribute:

public class Records { [JsonProperty("Records")] public List<Record> Data { get; set; } }
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You can use JsonProperty to change the name of the field. Please see this answer for more details: https://stackoverflow.com/a/15916121/686001

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