本文体验自定义错误信息。
系统默认的错误信息
在"MVC验证02-自定义验证规则、邮件验证"中，我们自定义了一个验证Email的类。如果输入邮件格式错误，出现系统默认的报错信息。
效果： 
通过ErrorMessage来修改错误信息
[Email(ErrorMessage = "Email格式错误")]
[Display(Name = "邮件")]
public string Email { get; set; }
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
效果：
在自定义验证特性中重写FormatErrorMessage方法
using System.ComponentModel.DataAnnotations;
using System.Text.RegularExpressions;
using System.Web.Mvc;
namespace MvcValidation.Extension
{
public sealed class EmailAttribute : ValidationAttribute, IClientValidatable
{
public const string reg = @"^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]+$";
public EmailAttribute()
{
}
//重写基类方法
public override bool IsValid(object value)
{
if (value == null)
return true;
if (value is string)
{
Regex regEx = new Regex(reg);
return regEx.IsMatch(value.ToString());
}
return false;
}
public System.Collections.Generic.IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
ModelClientValidationRule rule = new ModelClientValidationRule
{
ValidationType = "email",
ErrorMessage = FormatErrorMessage(metadata.GetDisplayName())
};
yield return rule;
}
/// <summary>
/// 格式化错误信息
/// </summary>
/// <param name="name">属性名</param>
/// <returns></returns>
public override string FormatErrorMessage(string name)
{
return this.ErrorMessage ?? string.Format("{0}属性没有输入正确的Email", name);
}
}
}
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
效果：
MVC验证06-自定义错误信息,布布扣,bubuko.com