第一步创建元数据类
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Reflection; 5 using System.Web; 6 using System.Web.Mvc; 7 8 namespace MvcApplication19 9 { 10 [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property)] 11 public class DisplayTextAttribute : Attribute, IMetadataAware 12 { 13 private static Type staticResourceType; 14 public string DisplayName { get; set; } 15 public Type ResourceType { get; set; } 16 17 public DisplayTextAttribute() 18 { 19 this.ResourceType = staticResourceType; 20 } 21 22 public void OnMetadataCreated(ModelMetadata metadata) 23 { 24 this.DisplayName = this.DisplayName ?? (metadata.PropertyName ?? metadata.ModelType.Name); 25 if (null == this.ResourceType) 26 { 27 metadata.DisplayName = this.DisplayName; 28 return; 29 } 30 PropertyInfo property = this.ResourceType.GetProperty(this.DisplayName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static); 31 metadata.DisplayName = property.GetValue(null, null).ToString(); 32 } 33 34 public static void SetResourceType(Type resourceType) 35 { 36 staticResourceType = resourceType; 37 } 38 } 39 }