Mvc4 RTM验证抛出一个错误 [英] Mvc4 RTM validation throwing an error

问题描述

有一些与有关模型的验证RTM比特改变。

Has something changed with the rtm bits regarding the validation of models.

我有一个简单的视图模型，看起来像

I have a simple viewmodel that looks like

    public class ProductViewModel
    { 
    [Required]
    [DataMember(IsRequired = true)]
    public int ProductTypeId { get; set; }
    public string Product { get; set; }
    }

（我刚刚添加的数据成员（IsRequired =真）作为错误信息让我说用它来解决这个问题。但没有喜悦）

(I just added the DataMember(IsRequired = true) as the error message I get says to use it to fix the problem. However no joy)

在我的控制器模型的状态告诉我模型是有效但是当我尝试使用RestSharp我得到以下错误的模型传递给我的API。

Within my controller the model state is telling me model is valid however when I try passing the model to my api using RestSharp I get the following error.

{消息：发生错误，ExceptionMessage：物业'ProductTypeId上键入Mine.Model.Model'是无效值类型属性标记为[必填]也必须标记与[数据成员（IsRequired = TRUE）被确认为需要考虑归因使用[DataContract]声明类型，并通过[数据成员（IsRequired = TRUE）]，ExceptionType属性：System.InvalidOperationException，堆栈跟踪：在System.Web.Http.Validation.Validators.ErrorModelValidator.Validate（ModelMetadata元数据对象容器）\\ r \\ n在System.Web.Http.Validation.DefaultBodyModelValidator.ShallowValidate（ModelMetadata元，validationContext validationContext，对象容器）\\ r \\ n在System.Web.Http.Validation.DefaultBodyModelValidator.ValidateNodeAndChildren（ModelMetadata元，validationContext validationContext，对象容器）\\ r \\ n在System.Web.Http.Validation.DefaultBodyModelValidator.ValidateProperties（ModelMetadata元，validationContext validationContext） \\ r \\ n在System.Web.Http.Validation.DefaultBodyModelValidator.ValidateNodeAndChildren（ModelMetadata元，validationContext validationContext，对象容器）\\ r \\ n在System.Web.Http.Validation.DefaultBodyModelValidator.Validate（对象模型，类类型，ModelMetadataProvider metadataProvider，HttpActionContext ActionContext中，串键preFIX个）\\ r \\ n在System.Web.Http.ModelBinding.FormatterParameterBinding＆LT;> C_的 DisplayClass1.b 的_0（对象模型）\\ r \\ n在System.Threading.Tasks.TaskHelpersExtensions.<>c__DisplayClass36<$c$c>1.<>c__DisplayClass38.<Then>b__35()\\r\
在System.Threading.Tasks.TaskHelpersExtensions.<>c__DisplayClass49.<ToAsyncVoidTask>b__48()\\r\
在System.Threading.Tasks.TaskHelpers.RunSynchronously [TResult]（Func键 1 FUNC键的CancellationToken的CancellationToken）}

{"Message":"An error has occurred.","ExceptionMessage":"Property 'ProductTypeId' on type 'Mine.Model.Model' is invalid. Value-typed properties marked as [Required] must also be marked with [DataMember(IsRequired=true)] to be recognized as required. Consider attributing the declaring type with [DataContract] and the property with [DataMember(IsRequired=true)].","ExceptionType":"System.InvalidOperationException","StackTrace":" at System.Web.Http.Validation.Validators.ErrorModelValidator.Validate(ModelMetadata metadata, Object container)\r\n at System.Web.Http.Validation.DefaultBodyModelValidator.ShallowValidate(ModelMetadata metadata, ValidationContext validationContext, Object container)\r\n at System.Web.Http.Validation.DefaultBodyModelValidator.ValidateNodeAndChildren(ModelMetadata metadata, ValidationContext validationContext, Object container)\r\n at System.Web.Http.Validation.DefaultBodyModelValidator.ValidateProperties(ModelMetadata metadata, ValidationContext validationContext)\r\n at System.Web.Http.Validation.DefaultBodyModelValidator.ValidateNodeAndChildren(ModelMetadata metadata, ValidationContext validationContext, Object container)\r\n at System.Web.Http.Validation.DefaultBodyModelValidator.Validate(Object model, Type type, ModelMetadataProvider metadataProvider, HttpActionContext actionContext, String keyPrefix)\r\n at System.Web.Http.ModelBinding.FormatterParameterBinding.<>c_DisplayClass1.b_0(Object model)\r\n at System.Threading.Tasks.TaskHelpersExtensions.<>c__DisplayClass361.<>c__DisplayClass38.<Then>b__35()\r\n at System.Threading.Tasks.TaskHelpersExtensions.<>c__DisplayClass49.<ToAsyncVoidTask>b__48()\r\n at System.Threading.Tasks.TaskHelpers.RunSynchronously[TResult](Func1 func, CancellationToken cancellationToken)"}

我不是有这个问题与RC位，但后来我只开始使用restsharp libary与RTM位。

I wasnt having this problem with the rc bits but then I have only started to use the restsharp libary with the rtm bits.

任何帮助将是巨大的。

推荐答案

在除了添加[数据成员（IsRequired = TRUE）的财产，你还需要确保属性[DataContract]是在应用一流的水平。

In addition to adding [DataMember(IsRequired = true)] to the property, you'll also need to ensure that the attribute [DataContract] is applied at the class level.

这篇关于Mvc4 RTM验证抛出一个错误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！