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c#asp.netowinidentitymodelstate

ModelState Validation Error when get value from User.Identity.GetUserId()

in my WebApi controller post function I assign user id to my posted object through User.identity.GetUserId() but ModelState.isValid always return validation error that

user id is required

while the value is assigned to the required property. So I removed the required attribute from userId property. It is working but I need to know as to why ModelState does not know that the user id has already been provided with User.Identity.GetUserId().

Solution

  • If you are using Web API 2, instead of User.identity.GetUserId() use 

    RequestContext.Principal.Identity.GetUserId()

    or

    using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.Owin;

Request.GetOwinContext().GetUserManager<ApplicationUserManager>()