在MVC中创建视图导致错误
本文关键字:错误 视图 创建 MVC | 更新日期: 2023-09-27 17:52:17
我有一个这样的学生班级:
namespace DomainClasses
{
using System;
using System.Collections.Generic;
public partial class Student
{
public Student()
{
this.Scores = new HashSet<Score>();
}
public int Id { get; set; }
public string Name { get; set; }
public string LastName { get; set; }
public string IntNo { get; set; }
public string FatherName { get; set; }
public string BirthLocation { get; set; }
public string Birthday { get; set; }
public string ImageUrl { get; set; }
public string Major { get; set; }
public string Degree { get; set; }
public string IdentNo { get; set; }
public string Address { get; set; }
public string Mobile { get; set; }
public string Email { get; set; }
public string Password { get; set; }
public System.DateTime RegisterDate { get; set; }
public string StudentId { get; set; }
public string State { get; set; }
public virtual ICollection<Score> Scores { get; set; }
}
}
这个类有一个存储库类来处理请求:
public class StudentRepository
{
readonly EducationDBEntities _dbcontext = new EducationDBEntities();
public void AddNewStudent(Student student)
{
_dbcontext.Students.Add(student);
}
public void RemoveStudent(Student student)
{
_dbcontext.Students.Remove(student);
}
public List<Student> GetStudentlist()
{
return _dbcontext.Students.ToList();
}
public Student FindStudentById(int id)
{
return _dbcontext.Students.Find(id);
}
public void Update(Student student)
{
_dbcontext.Entry(student).State = EntityState.Modified;
}
public void Save()
{
_dbcontext.SaveChanges();
}
}
当我尝试在MVC中使用创建视图创建学生模型时,我得到了这个错误:
一个或多个实体的验证失败。详细信息请参见'EntityValidationErrors'属性。
所以这个异常来自存储库类的Save
方法。我的意思是,当我想保存上下文时,我得到了这个错误。
创建模型的学生控制器:
[HttpPost]
public ActionResult Create(Student student)
{
obj.AddNewStudent(student);
obj.Save();
return RedirectToAction("Index", "Student");
}
我使用EF6创建这个模型,
详情请参阅'EntityValidationErrors'属性。
尝试查看EntityValidationErrors
属性以获取更多详细信息。用
_dbcontext.SaveChanges();
try
{
_dbcontext.SaveChanges();
}
catch (DbEntityValidationException validationException)
{
// Just use the debugger to inspect validationException
// here, or output EntityValidationErrors in some way.
} // <== You can set a breakpoint here.