CS1061：不包含定义

为什么我会收到此错误？ 当然，我的第一个模型上不存在SelectIssuePriority。 我添加了它。

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS1061: 'Devcore' does not contain a definition for 'SelectIssuePriority' and no extension method 'SelectIssuePriority' accepting a first argument of type 'Devcore.' could be found (are you missing a using directive or an assembly reference?) Source Error: Line 77: Line 78: 
 Line 79:  model.SelectIssuePriority) %> Line 80: 
 Line 81: 
 

模型

 namespace Devcore.Models { [MetadataType(typeof(IssueMetaData))] public partial class Issue { } public class IssueMetaData { [Required(ErrorMessage="Summary is required",AllowEmptyStrings = false)] public string Summary { get; set; } [Display(Name = "Priority")] [Required(ErrorMessage = "Priority is required", AllowEmptyStrings = false)] public string SelectIssuePriority { get; set; } } } 

ASPX

 
  model.SelectIssuePriority) %> 
 
   model.SelectIssuePriority) %>  

Answer 1

IIRC，那些MetaData扩展类纯粹用于validation。 如果您的基本模型没有这些属性..它将无法工作。

所以你需要这个以使视图接受存在的属性：

 [MetadataType(typeof(IssueMetaData))] public partial class Issue { public string SelectIssuePriority { get; set; } } 

并且您需要DataAnnotations的MetaData类才能使用模型validation。