hi ,

In query funcion if a record is null than i am thorwing the exception i.e

    throw new HttpResponseException(HttpStatusCode.NotFound); 

but when i run the aplication. than it point out that "HttpResposeException was Unhandled by user code"

so please let me know what is the issue with this code..

Code :

public IQueryable<Identity> QueryEddaIdentities(QueryEddaReq request)

{var customerDetail = _securityInstance.QueryEddaIdentities(request);

if (customerDetail == null)

throw new HttpResponseException

(new HttpResponseMessage{StatusCode =HttpStatusCode.NotFound,Content =new StringContent("Identites not found"),ReasonPhrase ="Identites not found"});

return customerDetail.AsQueryable();

}

ANd Use the following ExceptionHandler Filter

public class ExceptionHandlerFilter :ExceptionFilterAttribute

{publicExceptionHandlerFilter(){this.Mappings = new Dictionary<Type, HttpStatusCode>();this.Mappings.Add(typeof(ArgumentNullException), HttpStatusCode.BadRequest);this.Mappings.Add(typeof(ArgumentException), HttpStatusCode.BadRequest);}

public IDictionary<Type, HttpStatusCode> Mappings { get; private set; }

public override void OnException(HttpActionExecutedContext(actionExecutedContext)

{if (actionExecutedContext.Exception != null)

{var exception = actionExecutedContext.Exception;

if (actionExecutedContext.Exception is HttpException)

{var httpException = (HttpException)exception;actionExecutedContext.Result =new HttpResponseMessage{Content = new StringContent( exception.Message ),StatusCode = (HttpStatusCode)httpException.GetHttpCode()};

}

else if (this.Mappings.ContainsKey(exception.GetType()))

{

var httpStatusCode = this.Mappings[exception.GetType()];

actionExecutedContext.Result =new HttpResponseMessage{Content = new StringContent( exception.Message ),StatusCode = httpStatusCode};

}

else{actionExecutedContext.Result =new HttpResponseMessage { Content = new StringContent(exception.Message), StatusCode = HttpStatusCode.InternalServerError };}}}}

So whan i throw the httpException than this filter does not handle it.So my app gives the error "Http Exception Un handled by User Code"