实体框架中的验证 [英] Validations in entity framework

问题描述

我正在做一个项目，我通过实体框架工作添加了数据库模型。现在我需要验证一些数据。我不知道在哪里添加验证。可以有人帮助我.....
我试图在模型中添加验证 - > Model1.edmx - > Model1.tt - > Login.cs

但是没有用完



我尝试了什么：

Hi, I am doing one project in that i added database to model through entity frame work.Now i need to validate some data.I dont know where to add validations.Can anybody help me.....
I have tried to add validations in model -> Model1.edmx -> Model1.tt -> Login.cs
but it is not working out

What I have tried:

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated from a template.
//
//     Manual changes to this file may cause unexpected behavior in your application.
//     Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------

namespace DOT_NET_COMMUNITY.Models
{
    using System;
    using System.Collections.Generic;
    using System.ComponentModel.DataAnnotations;
    
    public partial class Login
    {
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
        public Login()
        {
            this.Articles = new HashSet<Article>();
            this.ForumReplies = new HashSet<ForumReply>();
            this.Forums = new HashSet<Forum>();
            this.Projects = new HashSet<Project>();

        }
        public int LoginId { get; set; }
        [Required(ErrorMessage = "Name Required")]
        public string Name { get; set; }
        [Required(ErrorMessage="Please enter User Name")]
        public string Username { get; set; }
        [Required(ErrorMessage = "Please enter Password")]
        public string Password { get; set; }
        [Required(ErrorMessage = "Please give security Que")]
        public string SecQuestion { get; set; }
        [Required(ErrorMessage = "Please enter Ans")]
        public string Answer { get; set; }
        [Required(ErrorMessage = "Please give the status")]
        public string Status { get; set; }
    
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<Article> Articles { get; set; }
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<ForumReply> ForumReplies { get; set; }
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<Forum> Forums { get; set; }
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<Project> Projects { get; set; }
    }
}

推荐答案

您可以使用数据注释属性，自定义验证，这里有一个示例MSDN



实体框架验证 [ ^ ]



如何：在数据模型中自定义数据字段验证 [ ^ ]



如何：使用自定义属性在数据模型中自定义数据字段验证 [ ^ ]



代码优先的验证属性 [ ^ ]

You can use Data Annotations Attributes, custom validation, here is an example on MSDN

Entity Framework Validation[^]

How to: Customize Data Field Validation in the Data Model[^]

How to: Customize Data Field Validation in the Data Model Using Custom Attributes[^]

Validation Attributes in Code-First[^]

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