c#, data annotation, 取得類別屬性(attribute) Display Name,

Get_DisplayName.cs

using System;
using System.Linq;
using System.ComponentModel.DataAnnotations;

public static class DBHelperClassExtensions
{
    public static string DisplayNameOf(Type ty, string propertyName)
    {
        var field = ty.GetProperty(propertyName);
        var attr = field.GetCustomAttributes(typeof(DisplayAttribute), false).FirstOrDefault() as DisplayAttribute;
        return attr?.Name;
    }
}