WCF not decoding parameters on WebGet method

Question

I have a .NET 4.5 WCF service. On my localhost and one other server the method parameters are passed correctly. However, on a different server, the method parameters remain encoded.

For example, if I use the following:

var factory = new ChannelFactory<MyService.Interface.ILeadService>("MyService", new EndpointAddress(url));
var channel = factory.CreateChannel();
using (new OperationContextScope((IContextChannel)channel))
{
    channel.AddCalendarItem("09/26/2013 7:40PM");
}

To call this method:

[OperationContract]
[WebGet(UriTemplate = "AddCalendarItem/?startDate={startDate}",
ResponseFormat = WebMessageFormat.Json)]
AddCalendarItemResponse AddCalendarItem(string startDate);

On my local (Windows 8) machine and one server (Windows Server 2008 R2) I get the expected string: "09/26/2013 7:40PM"

However, on one server (Windows Server 2012) with the same code and configuration I get: "09%2f26%2f2013 9%3a30PM"

I can't tell if the problem is with the caller or the callee.

Any idea what could be causing the lack of decoding? Could the channel be double-encoding?

Answer 1

What is Lead there?

Try now, it should work,

  [OperationContract]
        [WebGet(BodyStyle = WebMessageBodyStyle.WrappedRequest, ResponseFormat = WebMessageFormat.Json,
         UriTemplate = "/AddCalendarItem/{token}?startDate={startDate}")]
        AddCalendarItemResponse AddCalendarItem(string token, string startDate);