要求XML请求对象具有值类型 [英] Require an XML request object to have a value type

问题描述

在Web API中，是否可以强制XML请求对象具有值类型？

[必需]不适用于值类型。

我已经尝试了属性本身的以下属性而没有运气。还有另一种方法吗？我正在寻找一个可以轻松处理许多不同对象的解决方案 - 一个属性本来就很棒。

 
   [ 必需 ]   
   [  DataMember  （  IsRequired     =     true  ）]   
   [  XmlElement  （  IsNullable     =    假 ）]   
   [  JsonProperty  （ 必需    =    必需 。  AllowNull  ）]   
   [  DataMember  ，    XmlText  ]   
 
   ......   
   
 
   //在示例中，Test1应该是必需的
  公开   类    RequestModel1   
   {  
  公开    int     Test1     {   得到 ;    设置 ;    }   
  }   
 

解决方案

Hello Joseph，

>> [必需]不起作用值类型。

对于值类型，不可能没有值。换句话说，"requried"属性是使用  <会更好。 strong> RangeAttribute [范围（最小值，
max，ErrorMessage）]值类型。

>>我正在寻找一种可以轻松处理许多不同对象的解决方案 - 一个属性本来就很棒。

根据您的条件，您应该创建  客户验证属性 。据我所知，一个属性可以处理
的值类型，而.net框架中不存在引用类型。

我认为你应该发布一个帖子给  ASP.NET论坛以获得适当的支持。有很多经验可以帮助您快速解决问题。

此致，

feih

In Web API, is it possible to force an XML request object to have a value type?

[Required] doesn't work on value types.

I have tried the following attributes on the property itself with no luck. Is there another way to do this? I am looking for a solution that will easily work on many different objects - an attribute would have been great.

[Required]
[DataMember(IsRequired = true)]
[XmlElement(IsNullable = false)]
[JsonProperty(Required = Required.AllowNull)]
[DataMember, XmlText]

...
//in example, Test1 should be required
public class RequestModel1
{
    public int Test1 { get; set; }
}

解决方案

Hello Joseph,

>>[Required] doesn't work on value types.

For value type ,it's impossible to not have a value . In other words , the "requried" attribute is effectively meaningless. It would be better to use RangeAttribute[Range(min, max, ErrorMessage )] for value type.

>>I am looking for a solution that will easily work on many different objects - an attribute would have been great.

For your criteria , you should create a customer validation attribute . As far as i know, an attribute could handle for value type and reference type doesn't exist in .net framework.

And I think you should post a thread to ASP.NET forum for suitable support . there are a lot of experience people that could help you work out the problem quickly.

Sincerely,

feih

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