摘要： 比如： public class LineItem { [Key] public int OrderId { get; set;} [Key] public int LineNum { get; set;} public string ItemId { get; set;} public int Quantity { get; set;} public decimal UnitPrice { get; set; } }编译时会出现如下错误：Unable to determine co... 阅读全文

摘要： using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.ComponentModel.DataAnnotations; namespace CloudOne.Models{ public class Blog { public int BlogID { get; set; } public int CategoryID { get; set; } [MaxLength(70)] [Required... 阅读全文