IMetadataAware接口的特性定制Model元数据

第一步创建元数据类

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
 using System.Web;
 using System.Web.Mvc;

 namespace MvcApplication19
 {
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property)]
     public class DisplayTextAttribute : Attribute, IMetadataAware
     {
         private static Type staticResourceType;
         public string DisplayName { get; set; }
         public Type ResourceType { get; set; }

         public DisplayTextAttribute()
         {
             this.ResourceType = staticResourceType;
         }

         public void OnMetadataCreated(ModelMetadata metadata)
         {
             this.DisplayName = this.DisplayName ?? (metadata.PropertyName ?? metadata.ModelType.Name);
             if (null == this.ResourceType)
             {
                 metadata.DisplayName = this.DisplayName;
                 return;
             }
             PropertyInfo property = this.ResourceType.GetProperty(this.DisplayName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static);
             metadata.DisplayName = property.GetValue(null, null).ToString();
         }

         public static void SetResourceType(Type resourceType)
         {
             staticResourceType = resourceType;
         }
     }
 }

第二步创建Person类

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;

 namespace MvcApplication19.Models
 {
     public class Person
     {
         [DisplayText]
         public string  Name { get; set; }

          [DisplayText]
         public string Sex { get; set; }

          [DisplayText]
         public string BirthDay { get; set; }
          [DisplayText]
         public string Dep { get; set; }
     }
 }