DisplayAttribute没作用,why?

namespace WebBulletinBoard.DataAccess
{
using System;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema; [Table("BulletinBoardFile")]
public partial class BulletinBoardFile
{
[Key]
public Guid FileKeyID { get; set; }
[Display(Name = "展示日期", Order = 0)]
[StringLength(10)]
public string WorkDate { get; set; }
[Display(Name = "公告抬头", Order = 1)]
[StringLength(1024)]
public string BulletinTitle { get; set; }
[Display(Name = "公告描述", Order = 2)]
[StringLength(1024)]
public string BulletinContexnt { get; set; }
[Display(Name = "发布人", Order = 4)]
[StringLength(30)]
public string UploadUser { get; set; }
[Display(Name = "发布时间", Order = 3)]
public DateTime? UploadDateTime { get; set; }
[Display(Name = "文件名", Order = 5)]
[StringLength(255)]
public string FileName { get; set; } [Column(TypeName = "image")]
public byte[] BinaryData { get; set; }
[Display(Name = "显示天数", Order = 6)]
public int DisplayDays { get; set; } public int? OderIndex { get; set; } [Column(TypeName = "timestamp")]
[DatabaseGenerated(DatabaseGeneratedOption.Computed)]
[MaxLength(8)]
public byte[] RowVersion { get; set; }
}
}

上面是实体类的定义。在给DataGridView绑定了上面的实体作为数据源之后,DisplayAttribute标记的中文列名没有显示出来。为什么呢?

DisplayAttribute没作用,why?

实在没有办法,手动使用下面的办法解决了。

if (GridView1.Columns.Count > 0)
{
var props = typeof(BulletinBoardFile).GetProperties();
foreach (var p in props)
{
var colParaObj = (DisplayAttribute)p.GetCustomAttributes(typeof(DisplayAttribute), false).FirstOrDefault();
if (colParaObj != null)
{
for (int i = 0; i < GridView1.Columns.Count; i++)
{
if (GridView1.Columns[i].HeaderText.Equals(p.Name))
{
GridView1.Columns[i].HeaderText = colParaObj.Name;
break;
}
}
}
}
}

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