1：给实体中的每个需要注释的字段加上[Description()]特性，如下图。
/// <summary>/// 通行统计/// </summary>[Table("CS_RecordTotal")]public class RecordTotalEntity : Entity<int>{[NotMapped]public string CS_RecordTotal { get; set; }/// <summary>/// 主键/// </summary>[Column("id"), Key][Description("主键")][DatabaseGenerated(DatabaseGeneratedOption.Identity)]public override int Id { get; set; }/// <summary>/// 今日通行数/// </summary>[Description("今日通行数")]public int TodayNum { get; set; }/// <summary>/// 累计通行数/// </summary>[Description("累计通行数")]public int TotalNum { get; set; }}
2：重写Seed方法（在数据库迁移脚本的配置中配置中）。
/// <summary>/// 本地数据库迁移配置/// </summary>public class DataGateDbConfiguration : DbMigrationsConfiguration<MysqlCSContext>{public DataGateDbConfiguration(){//缺点需要为任何未决的模型更改提供迁移脚本（Add-Migration）否则数据库表结构和代码可能不一致//优点：数据库变更有迹可循，可指定版本升级降级，每次表数据的初始化更新可以写在相应的迁移脚本中//AutomaticMigrationsEnabled = false;//优点：dbContext中的实体及属性的改动运行时会在数据库中直接生效//缺点：数据库版本不可控，数据库结构变动比较随意AutomaticMigrationsEnabled = true;AutomaticMigrationDataLossAllowed = true;//数据库上下文路径ContextKey = "项目名称";//迁移脚本路径MigrationsDirectory = @"Migrations\DataContextMigrations";}protected override void Seed(MysqlCSContext context){new InitialHostDbBuilder(context).Create();List<PropertyInfo[]> listperoperties = new List<PropertyInfo[]>(){typeof(AlarmDetailEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance),typeof(BlackListEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance),typeof(PassRecordEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance),typeof(PersonFeatureEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance),typeof(PersonInfoEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance),typeof(WhiteListEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance),typeof(RecordTotalEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance),};GetDescription(listperoperties, context);}void GetDescription(List<PropertyInfo[]> listperoperties, MysqlCSContext context){for (int j = 0; j < listperoperties.Count; j++){for (int i = 1; i < listperoperties[j].Length; i++){object[] objs = listperoperties[j][i].GetCustomAttributes(typeof(DescriptionAttribute), true);if (objs.Length > 0){context.Database.ExecuteSqlCommand("ALTER TABLE " + listperoperties[j][0].Name + " MODIFY COLUMN " + listperoperties[j][i].Name + " VARCHAR(30) NOT NULL COMMENT " + "'" + ((DescriptionAttribute)objs[0]).Description + "'");}}}}}
3.配置完成，运行即可。最后就可以看数据库中注释自动添加了。
