覆蓋MVC中的最大長度錯誤消息

Question

我想覆蓋ASP.net MVC中的最大長度錯誤消息。基本上，我想使錯誤消息字符串如下：

[DisplayName]長度不應超過[x]。但是，我不知道如何在內部包含displayname屬性值。

public class MyMaxLengthAttribute : MaxLengthAttribute 
{ 
    public MyMaxLengthAttribute(int length) : base(length) 
    { 
     ErrorMessage = "What should I input here" 
    } 
} 

Answer 1

如果使用StringLengthAttribute{0}指的是顯示名稱和{2}指長度。

public class MyMaxLengthAttribute : StringLengthAttribute 
{ 
    public MyMaxLengthAttribute(int length) : base(length) 
    { 
     ErrorMessage = "{0} length should not be more than {2}" 
    } 
} 

Answer 2

嗨我沒有在這裏訪問計算機，但我相信你必須做一些事情。

public class MyMaxLengthAttribute : MaxLengthAttribute 
{ 
    private static String CustomErrorMessage = "{0} length should not be more than {1}"; 
    public MyMaxLengthAttribute(int length) : base(length) 
    { 
     ErrorMessage = "What should I input here" 
    } 

    public override string FormatErrorMessage(string name) 
    { 
     if (!String.IsNullOrEmpty(ErrorMessage)) 
     { 
      ErrorMessage = MyErrorMessage; 
     } 
     return String.Format(CultureInfo.CurrentUICulture, CustomErrorMessage , name); 
    } 
}