delete method in web api not work - asp.net

Question

i'm using web api with asp.net web forms 4.5 and i have problem in delete method .
that not work but other methods work good.
please help .
this my delete method:
[HttpDelete]
public void DeleteConversation(long id)
{
if (_repository.UserConvers(long.Parse(User.Identity.GetUserId())).All(a => a.Id != id))
return;
var item = _repository.Get(id);
if (item == null)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
_repository.Remove(id);
}
and this is my web config :
<modules runAllManagedModulesForAllRequests="true">
<remove name="FormsAuthenticationModule" />
<remove name="WebDAVModule"/>
</modules>
<handlers>
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<remove name="OPTIONSVerbHandler" />
<remove name="TRACEVerbHandler" />
<add name="CKUpload" path="/Handlers/CKUpload.ashx" verb="*" type="UI.Handlers.CKUpload,UI" />
<add path="Captcha.ashx" verb="*" name="Captcha" type="UI.Handlers.Captcha,UI" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>

Answer 1

Make sure that inside your delete method in _repository class that you are calling SaveChanges(). Nothing wrong with your Method and you should be able to access it by issuing HTTP Delete to uri "/api/{controllerName}/45541"