ASP.NET MVC：ValidationAttribute和本地化的ErrorMessage [英] ASP.NET MVC: ValidationAttribute and localized ErrorMessage

问题描述

我有ValidationAttribute这样的：

I have ValidationAttribute like:

    public class Username : ValidationAttribute
 {
  public override bool IsValid(object value)
  {
   if (value == null)
    return false;

   return RegExp.Validate(RegExpLib.Username,value.ToString());
  }
 }

..并使用它是这样的：

..and using it like this:

    public class AccountSignIn
 {
  [Username(ErrorMessageResourceName ="txtUsername",ErrorMessageResourceType=typeof(SignIn))]
  public string Username { get; set; }

  public string Password { get; set; }

  public bool RememberMe { get; set; }

  public string ReturnUrl { get; set; }
 }

签到是在App_GlobalResources文件资源文件和txtUsername - 是在资源文件字符串名称。

SignIn is resource file at App_GlobalResources and "txtUsername" - is string name in resource file.

问题：
错误消息未示出。

Problem: Error messages are not shown.

问题：
如何设置错误消息，如果我在网站上几种语言。

Question: How to set error message if I have few languages on the website.

另一个信息：

我是从浏览才能访问 SignIn.txtUsername 或项目中的任何文件。从控制器

I am able access SignIn.txtUsername from Views or any file in the project. From controller

ModelState.AddModelError("Username", Resources.SignIn.txtUsername);

正常工作以及..我可以分配的ErrorMessage里面ValidationAttribute，却得到了第二确认后错误尝试...如果我摆检查仪这样的 -

works fine as well.. I can assign ErrorMessage inside ValidationAttribute, but got error after second validation try... if I place check like this -

   if(ErrorMessage != Resources.SignIn.txtUsername)
       ErrorMessage = Resources.SignIn.txtUsername; 

我有错误后，我切换到另一种语言 - 的ErrorMessage只能被分配一次。

I have error after I switch to another language - ErrorMessage can be assigned only once.

请指点我怎样才能解决这个问题。

Please advice how I can solve it.

感谢您提前。

推荐答案

我遇到了一些问题，利用本地化错误消息和DataAnnotations，pretty你的情况多的是相同的。虽然我没有显示错误消息的空白之中结束了，我总是有一些例外抛出。解决方法对我来说是：

I had some problems with using localized error messages and DataAnnotations, pretty much identical to your situation. Although I didn't end up with blank being displayed as error messages, I always got some exceptions thrown. Solution for me was:

1. 在App_GlobalResources文件/打开Errors.resx资源文件，改变它的属性生成操作：嵌入式的资源，自定义工具：PublicResXFile codeGenerator，自定义工具命名空间：资源（视觉工作室做一些奇怪的autogenerating这些，所以回来了，事情都OK检查）

1. in App_GlobalResources/Errors.resx open the resource file, change it's properties to Build Action: Embedded Resource, Custom Tool: PublicResXFileCodeGenerator, Custom Tool Namespace: Resources (visual studio does something weird in autogenerating these, so check back again that things are ok)

更​​改资源文件的访问修饰符公共

Change the resource file's access modifier to Public

检查从生成（Errors.Designer.cs）的命名空间和访问修饰符是正确的code文件。

Check from the code file generated (Errors.Designer.cs) that the namespace and access modifier are correct.

试用

从Model类我的例子：

My example from the Model class:

[Required(ErrorMessageResourceType = typeof(Resources.Errors), ErrorMessageResourceName="ResponseMessageRequired")]
public string message { get; set; }

这篇关于ASP.NET MVC：ValidationAttribute和本地化的ErrorMessage的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！