WCF DataMember DateTime Serializing Format - json

Question

I have a working WCF service which used JSON as its RequestFormat and ResponseFormat.
[ServiceContract]
public interface IServiceJSON
{
[OperationContract]
[WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
MyClassA echo(MyClassA oMyObject);
}
[DataContract]
public class MyClassA
{
[DataMember]
public string message;
[DataMember]
public List<MyClassB> myList;
public MyClassA()
{
myList = new List<MyClassB>();
}
}
[DataContract]
public class MyClassB
{
[DataMember]
public int myInt;
[DataMember]
public double myDouble;
[DataMember]
public bool myBool;
[DataMember]
public DateTime myDateTime;
}
The myDateTime property of class MyClassB is of type DateTime. This is being serialized to the following format: "myDateTime":"/Date(1329919837509+0100)/"
The client I need to communicate with can not deal with this format. It requires it to be a more conventional format like for example: yyyy-MM-dd hh:mm:ss
Is it somehow possible to add this to the DataMember attribute? Like so:
[DataMember format = “yyyy-MM-dd hh:mm:ss”]
public DateTime myDateTime;
Thanks in advance!

Answer 1

Here's an example of the already checked answer...
[DataContract]
public class ProductExport
{
[DataMember]
public Guid ExportID { get; set; }
[DataMember( EmitDefaultValue = false, Name = "updateStartDate" )]
public string UpdateStartDateStr
{
get
{
if( this.UpdateStartDate.HasValue )
return this.UpdateStartDate.Value.ToUniversalTime().ToString( "s", CultureInfo.InvariantCulture );
else
return null;
}
set
{
// should implement this...
}
}
// this property is not transformed to JSon. Basically hidden
public DateTime? UpdateStartDate { get; set; }
[DataMember]
public ExportStatus Status { get; set; }
}
The class above defines two methods to handle the UpdateStartDate. One that contains the nullable DateTime property, and the other convert the DateTime? to a string for the JSon response from my service.

Answer 2

Why not just pass it as an already formatted string?
That is, don't pass the date in your DataContract as a date. Make that member a string instead, and format the string the way your client it wants it.