public ActionResult AddStudentToDpt(StudentDepartmentIDs studentDepartmentIDs) { if (ModelState.IsValid) { int stId = studentDepartmentIDs.StudentId; var decoded = SecureCodes.Decode(stId.ToString()); studentDepartmentIDs.StudentId = Convert.ToInt32(decoded); db.studentDepartmentIDs.Add(studentDepartmentIDs); db.SaveChanges(); return(Redirect("/students/Index")); } return(View()); }