WCF REST JSON request: Formatter exception - json

Question

I have a enum as one of the parameters in my Rest API.
End Point contract:
List<Transaction> GetTransactions(int employeeID, int recordOffset, int recordLimit, TransactionType transactionType = TransactionType.All);
InputJSON Request:
{
"employeeID":"123",
"recordOffset": 0,
"recordLimit": 80,
"transactionType":"All"
}
I'm getting a 400 bad request, when i pass this input JSON with transactionType key.
Please let me know how, i should be passing an ENUM value in the json request.
public enum TransactionType
{
All = 0,
Incoming = 1,
Outgoing = 2
}
Exception Message:
The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter http://Services/2015/03:transactionType. The InnerException message was 'There was an error deserializing the object of type Entities.TransactionType. The value 'All' cannot be parsed as the type 'Int64'.'. Please see InnerException for more details

Answer 1

The parameter expected is an int.
You should be passing an int value of 0, 1 or 2 in the JSON request here.
Depending on how you build up your JSON request, you could add the value of the Enum you want, e.g transactionType = TransactionType.All
This way, you can actually use your Enum when building up your request to ensure you use viable values.