我的代码如下所示
MODEL
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MyProject.Models
{
[Table("UserMaster")]
public partial class UserMaster
{
[Key]
public int UserID { get; set; }
[System.Web.Mvc.Remote("doesAlreadyExist", "User", HttpMethod = "POST", ErrorMessage = "User Number already exists. Please enter a different Number.")]
[Required(ErrorMessage = "Enter Personal No")]
[Display(Name = "User No")]
[StringLength(10)]
public string User No{ get; set; }
[Required(ErrorMessage = "Enter Password")]
[Display(Name = "Password")]
public string Password { get; set; }
[NotMapped]
[Compare("Password", ErrorMessage = "Password doesn't match.")]
[Display(Name = "Confirm Password")]
public string CPassword { get; set; }
}
public class UserChangePassMV
{
[Required]
[Display(Name = "Old Password")]
[DataType(DataType.Password)]
public string OldPassword { get; set; }
[Required]
[Display(Name = "New Password")]
[DataType(DataType.Password)]
public string NewPassword { get; set; }
[NotMapped]
[Display(Name = "Confirm Password")]
[DataType(DataType.Password)]
[Compare("NewPassword",ErrorMessage="Password Doesnt Match in User Change Password.")]
public string ConfirmPassword { get; set; }
}
public class ChangeAvatar
{
public byte[] Photo { get; set; }
public string ImgSrc { get; set; }
}
}
电脑板
[OutputCache(Duration = 10, VaryByParam = "none", Location = OutputCacheLocation.Client, NoStore = true)]
public ActionResult ChangeAvatar()
{
ChangeAvatar avatar = new Models.ChangeAvatar();
int uid = Convert.ToInt32(Session.GetDataFromSession<CommonUserSession>("CommonUserSession").UserID);
avatar.Photo = db.UserMasters.SingleOrDefault(x => x.UserID == uid).Photo;
if (avatar.Photo != null)
{
string imageBase64 = Convert.ToBase64String(avatar.Photo);
avatar.ImgSrc = string.Format("data:image/jpeg;base64,{0}", imageBase64);
}
return View("ChangeAvatar", "_Layout", avatar);
}
[HttpPost]
public ActionResult ChangeAvatar(HttpPostedFileBase file)
{
if (file == null)
{
ModelState.AddModelError("", "Select image to upload");
}
int uid = Convert.ToInt32(Session.GetDataFromSession<CommonUserSession>("CommonUserSession").UserID);
UserMaster Mem = db.UserMasters.SingleOrDefault(x => x.UserID == uid);
try
{
if (ModelState.IsValid)
{
string path = System.IO.Path.Combine(Server.MapPath("~/ProfileImg"), uid.ToString() + ".jpg");
// file is uploaded
file.SaveAs(path);
using (MemoryStream ms = new MemoryStream())
{
file.InputStream.CopyTo(ms);
byte[] array = ms.GetBuffer();
Mem.Photo = array;
}
db.SaveChanges();
return RedirectToAction("ChangeAvatar");
}
}
catch (DbEntityValidationException ex)
{
var errorMessages = ex.EntityValidationErrors
.SelectMany(x => x.ValidationErrors)
.Select(x => x.ErrorMessage);
var fullErrorMessage = string.Join("; ", errorMessages);
var exceptionMessage = string.Concat(ex.Message, " The validation errors are: ", fullErrorMessage);
HtmlHelperExtensions.LogError(ex);
throw new DbEntityValidationException(exceptionMessage, ex.EntityValidationErrors);
}
catch (RetryLimitExceededException /* dex */)
{
ModelState.AddModelError("", "Unable to save changes. Try again, and if the problem persists see your system administrator.");
}
ChangeAvatar avatar = new Models.ChangeAvatar();
avatar.Photo = db.UserMasters.SingleOrDefault(x => x.UserID == uid).Photo;
if (avatar.Photo != null)
{
string imageBase64 = Convert.ToBase64String(avatar.Photo);
avatar.ImgSrc = string.Format("data:image/jpeg;base64,{0}", imageBase64);
}
return View(avatar);
}
查看
@model MyProject.Models.ChangeAvatar
@{
ViewBag.Title = "Change Avatar";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<!-- BEGIN PAGE BAR -->
@section PageBreadcrumb{
<ul class="breadcrumb">
<li><a href="~/Home/Index"><i class="icon-home2 position-left"></i> Dashboard</a></li>
<li class="active">Change Avatar</li>
</ul>
}
<!-- END PAGE BAR -->
<div class="clearfix"></div>
@section PageJS{
<script type="text/javascript" src="~/assets/js/plugins/uploaders/fileinput.min.js"></script>
<script type="text/javascript" src="~/assets/js/pages/uploader_bootstrap.js"></script>
<script type="text/javascript">
if ('@ViewBag.Status' != "") {
var notice = new PNotify({
title: '@ViewBag.Status',
text: '@ViewBag.Msg',
addclass: 'bg-@ViewBag.Type' //primary,info,danger,success,warning
}).get().click(function () {
notice.remove(); //Click to remove
});
}
</script>
}
@using (Html.BeginForm("ChangeAvatar", "User", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
@Html.AntiForgeryToken()
@Html.ValidationSummary()
<div class="panel panel-flat">
<div class="panel-heading">
<h5 class="panel-title text-primary">Change Avatar</h5>
<div class="heading-elements">
<ul class="icons-list">
<li><a data-action="collapse"></a></li>
@*<li><a data-action="reload"></a></li>
<li><a data-action="close"></a></li>*@
</ul>
</div>
</div>
<div class="panel-body">
<div class="col-md-12">
<div class="form-group">
<label class="col-lg-2 control-label text-semibold">Avatar:</label>
<div class="col-lg-10">
<input type="file" name="file" class="file-input-custom" data-show-caption="true" data-show-upload="true" accept="image/*">
<span class="help-block">Show only image files for selection & preview.</span>
</div>
</div>
<div class="col-lg-12">
<div class="text-right">
<p>
<div class="text-right">
@*<button type="submit" class="btn btn-primary">Change <i class="icon-arrow-right14 position-right"></i></button>*@
</div>
</p>
</div>
</div>
</div>
</div>
</div>
}
现在，当我尝试在“更改头像”中保存数据时，它显示
的第一个模型的错误Validation failed for one or more entities. See 'EntityValidationErrors' property for more details. The validation errors are: Password doesn't match.
如果我删除比较部分比它的工作，但我需要比较确认密码
这可能适用于这样的两个类吗？
帮帮我，我被困在这里。
答案 0 :(得分：0)
您的UserMaster类具有CPassword属性，当您执行db.UserMasters.SingleOrDefault(x => x.UserID == uid)时，该属性将设置为null。您更新Photo字段并保存实体。 db.SaveChanges();会在您的实体上触发验证，该实体正在比较产生异常的密码字段值。 MVC和EF都使用数据注释属性进行验证。 EF读取为表示层设计的属性。
想一想为什么在模型类中需要CPassword字段？它不存储在数据库中。仅需捕获用户输入。通常这就是所谓的 viewModel 类责任。为了解决问题，请将UserMaster拆分为单独的类。
public partial class UserMaster
{
[Key]
public int UserID { get; set; }
[Required]
[Display]
[StringLength(10)]
public string UserNo { get; set; }
[Required]
public string Password { get; set; }
}
public class UserMasterViewModel
{
public int UserID { get; set; }
[System.Web.Mvc.Remote("doesAlreadyExist", "User", HttpMethod = "POST", ErrorMessage = "User Number already exists. Please enter a different Number.")]
[Required(ErrorMessage = "Enter Personal No")]
[Display(Name = "User No")]
[StringLength(10)]
public string UserNo{ get; set; }
[Required(ErrorMessage = "Enter Password")]
[Display(Name = "Password")]
public string Password { get; set; }
[Compare("Password", ErrorMessage = "Password doesn't match.")]
[Display(Name = "Confirm Password")]
public string CPassword { get; set; }
}
使用UserMasterViewModel作为视图的@model。执行dbModel＆lt; =＆gt;你控制器方法中的viewModel映射。