error deserializing the object of type .... End element '......' from namespace '' expected. Found element 'item' from namespace ''

Steve picture Steve · Apr 5, 2013 · Viewed 21.1k times · Source

When I deserialize my jsonstring ,I am getting error message

 There was an error deserializing the object of type RecordInfo. End element 'Warning' from namespace '' expected. Found element 'item' from namespace ''.

This is my JsonString

public const string jsonString = @" 
        {
            ""RequestId"":514106,
            ""Warning"":[],
            ""CustomerData"": {
                ""Email"":""[email protected]"",
                ""FullName"":""OrTguOfE"",
                ""OrderData"":[]
            }
        }";

Data contracts

[DataContract]
    public class RecordInfo
    {
        [DataMember(Name = "RequestId")]
        public string RequestId { get; set; }

        [DataMember(Name = "Warning")]
        public string Warning { get; set; }

        [DataMember(Name = "CustomerData")]
        public CustomerData CustomerData { get; set; }
    }
 [DataContract]
    public class CustomerData
    {
        [DataMember(Name = "Email")]
        public string RequestId { get; set; }

        [DataMember(Name = "FullName")]
        public string FullName  { get; set; }

        [DataMember(Name = "OrderData")]
        public OrderData[]  OrderData { get; set; }
    }
[DataContract]
    public class OrderData
    {
        [DataMember(Name = "OrderId")]
        public string OrderId { get; set; }

        [DataMember(Name = "SourceId")]
        public string SourceId { get; set; }

        [DataMember(Name = "SourceData")]
        public SourceData[] SourceData { get; set; }
    }

    [DataContract]
    public class SourceData
    {
        [DataMember(Name = "SourceDescription")]
        public string SourceDescription { get; set; }

        [DataMember(Name = "ProductName")]
        public string ProductName { get; set; }
    }
}

This is the Deserializer I use

private static T Deserialize<T>(string jsonString)
    {
        using (var ms = new MemoryStream(Encoding.Unicode.GetBytes(jsonString)))
        {
            var serializer = new DataContractJsonSerializer(typeof(T));
            return (T)serializer.ReadObject(ms);
        }
    }

When I deserialize the bove jsonstring ,I am getting error message

 There was an error deserializing the object of type RecordInfo. End element 'Warning' from namespace '' expected. Found element 'item' from namespace ''.

Any suggestions to resolve this error?

Answer

MarcinJuraszek picture MarcinJuraszek · Apr 5, 2013

Set IsRequired = false, e.g.:

[DataMember(Name = "RequestId", IsRequired = false)]

MSDN Source: DataMemberAttribute.IsRequired Property

Gets or sets a value that instructs the serialization engine that the member must be present when reading or deserializing.