public ActionResult JoınOrganizations(OrganizationParticipantModel model) { Participants participant = new Participants(); Users usr = Session["Login"] as Users; List <Participants> participants = participantBLL.GetParticipantOrganizations(usr.UserID); foreach (var item in participants) { if (usr.UserID == item.UserID && model.organizations.OrganizationID == item.OrganizationID) { return(RedirectToAction("OrganizationsList")); } } participant.UserID = usr.UserID; participant.OrganizationID = model.organizations.OrganizationID; participant.NumberofPeople = model.ParticipantNumber; participant.Date = DateTime.Now; participantBLL.JoınOrganization(participant); return(RedirectToAction("OrganizationsList", new { id = model.organizations.OrganizationID })); }