Question

I am creating a wcf self hosted service. I am using UriTemplate class to customize the urls to methods. the code snippet is given below

 public interface ISelfService
    {
        [WebInvoke(Method = "POST", UriTemplate = "ack/{errorcode}/{uniquefileid}")]
        [OperationContract]
        void Ack(ErrorCode errorcode, string uniquefileid);

       [WebInvoke(Method = "POST", UriTemplate = "filechanged/{metainfo}")]
       [OperationContract]
       void FileChanged(MetaInformation metainfo);

     }

Whenever i run this program i am getting the following error

Operation ‘FileChanged’ in contract ‘ISelfHostService’ has a query
variable named ‘metainfo’ of type ‘Natash.Common.MetaInformation’,
but type ‘Natash.Common.MetaInformation’ is not convertible by
‘QueryStringConverter’. Variables for UriTemplate query values must
have types that can be converted by ‘QueryStringConverter’

Can any one tell me why is this happening?

And, I have not made any modification to the web.config file. Do i need to make any modification there?

MetaInformation is defined as follows

[DataContract]
    public struct MetaInformation
    {
        [DataMember]
        public string Author { get; set; }
        [DataMember]
        public string tags { get; set; }
        [DataMember]
        public string categories { get; set; }
        [DataMember]
        public string description { get; set; }
}

Answer 1

try this


public interface ISelfService{

    [OperationContract]
    [WebInvoke(Method = "POST", UriTemplate = "/ack?errorcode={errorcode}&uniquefileid={uniquefileid}")]
    void Ack(ErrorCode errorcode, string uniquefileid);

    [OperationContract]
    [WebInvoke(Method = "POST", UriTemplate = "/filechanged")]
    void FileChanged(MetaInformation metainfo);}