小编Ryg*_*ydg的帖子

当我将电子邮件留空并提交注册表单时,它会将表单输入正确保存到数据库中.但是,当我包含一封电子邮件(例如:testemail@gmail.com)时,它会在db.SaveChanges(); 叫做.

我收到的错误说:

EntityFramework.dll中出现"System.Data.Entity.Validation.DbEntityValidationException"类型的异常,但未在用户代码中处理

附加信息:一个或多个实体的验证失败.有关详细信息,请参阅"EntityValidationErrors"属性.

控制器:

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
using Mkq.Models;

namespace Mkq.Controllers
{
    public class TeacherController : Controller
    {
        private MkqDbEntities db = new MkqDbEntities();

    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public ActionResult Register([Bind(Include="teacher_id,subscription_id,teacher_fname,teacher_lname,username,password,email,teacher_credNumber,teacher_credST")] Teacher teacher)
    {
        teacher.subscription_id = 1;
        teacher.teacher_credNumber = null;
        teacher.teacher_credST = null;
        if (ModelState.IsValid)
        {
            db.Teachers.Add(teacher);
            db.SaveChanges();     //Error occurs when submitted
            return View();
        }

        // If we got this far, something failed, redisplay form
        return …