<summary> /// 缴费项目 /// </summary> public class fee_item : feemodel { /// <summary> /// 缴费项目 /// </summary> public class fee_item : feemodel { public fee_item() { type = feeItemType.Normal;//枚举类型初始化 } [Required] [StringLength(16, MinimumLength = 2)] public string name { get; set; }//缴费类型 [Required] [StringLength(16, MinimumLength = 2)] public string code { get; set; } public feeItemType type { get; set; } public bool State { get; set; }//是否启用 public string Icon { get; set; }//显示图标 public long sort { get; set; } public long appid { get; set; } } [Required] [StringLength(16, MinimumLength = 2)] public string name { get; set; }//缴费类型 [Required] [StringLength(16, MinimumLength = 2)] public string code { get; set; } public feeItemType type { get; set; } public bool State { get; set; }//是否启用 public string Icon { get; set; }//显示图标 public long sort { get; set; } public long appid { get; set; } } View Code

2.2为对象赋默认值【可选择】

    public void Initialize(FeeDbContext context)
        {
              List<fee_item> fim = new List<fee_item>() { 
                new fee_item(){name="电费",code="pow",type= feeItemType.Normal,State=true,Icon="img/jf_dianf.png",sort=0,appid=0,reg_time=DateTime.Now},
                new fee_item(){name="网费",code="net",type= feeItemType.Normal,State=true,Icon="img/jf_wangf.png",sort=1,appid=1,reg_time=DateTime.Now},
                new fee_item(){name="四六级",code="cet",type= feeItemType.Normal,State=true,Icon="img/jf_siliuj.png",sort=2,appid=2,reg_time=DateTime.Now},
                new fee_item(){name="报名费",code="pow",type= feeItemType.Normal,State=true,Icon="img/jf_baomingf.png",sort=3,appid=3,reg_time=DateTime.Now},
                new fee_item(){name="保险费",code="pow",type= feeItemType.Normal,State=false,Icon="img/jf_baox.png",sort=4,appid=4,reg_time=DateTime.Now},
                new fee_item(){name="住宿费",code="pow",type= feeItemType.Normal,State=true,Icon="img/jf_dianf.png",sort=5,appid=5,reg_time=DateTime.Now}
            };
            List<school_power> con_power = new List<school_power>() { 
            new school_power(){oid=1,power_code="ykt",power_id="1",reg_time=DateTime.Now},
            new school_power(){oid=1,power_code="sims",power_id="2",reg_time=DateTime.Now}
            };
           fim.ForEach(o => context.fee_item.Add(o));
           context.SaveChanges();
        }

View Code

3.DBContext

  public class FeeDbContext : DbContext
    {
        public FeeDbContext() : base("FeeDbContext") { }
        public DbSet<fee_item> fee_item { get; set; }
       protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
         
        }
    }

View Code

4.EF Code First

4.1新增

public bool Build()
        {
            try
            {
                var context = new FeeDbContext();
                if (!context.Database.Exists())
                {
                    new List<IDataInitializer<FeeDbContext>>() { 
                        new DataInit4dept()
                    }.Setup<FeeDbContext>(context);
                    return true;
                }
                return false;
            }
            catch (DbEntityValidationException ex)
            {
                StringBuilder error = new StringBuilder();
                foreach (var item in ex.EntityValidationErrors)
                {
                    foreach (var item2 in item.ValidationErrors)
                    {
                        error.Append(string.Format("{0}:{1}\r\n", item2.PropertyName, item2.ErrorMessage));
                    }
                }
                Console.WriteLine("数据库初始化报错：" + error);
                throw ex;
            }
            catch (Exception e)
            {
                Console.WriteLine("数据库初始化报错：" + e.Message);
                throw e;
            }
        }

View Code

4.2移除

 public bool Remove()
        {
            var context = new FeeDbContext();
            try
            {
                if (context.Database.Exists())
                {
                    return context.Database.Delete();
                }
                return true;
            }
            catch (Exception e)
            {
                Console.WriteLine("数据库初始化报错：" + e.Message);
                return false;
            }
            finally { context.Dispose(); }
        }

View Code

4.3初始化

 public bool Rebuild()
        {
            return Remove() && Build();
        }

View Code

 

EF code first 创建和初始化数据库

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