添加项目文件。

Atomx.Common/Entities/Area.cs

@@ -0,0 +1,69 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Atomx.Common.Entities
+{
+    /// <summary>
+    /// 地区（国家、省、市、区）
+    /// </summary>
+    public class Area
+    {
+        /// <summary>
+        /// 数据ID
+        /// </summary>
+        [DatabaseGenerated(DatabaseGeneratedOption.None)]
+        [Key]
+        public long Id { get; set; }
+
+        /// <summary>
+        /// 上级ID
+        /// </summary>
+        public long ParentId { get; set; }
+
+        /// <summary>
+        /// 地区名称
+        /// </summary>
+
+        [Column(TypeName = "varchar(255)")]
+        public string Name { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 首字母
+        /// </summary>
+        [Column(TypeName = "varchar(1)")]
+        public string Initial { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 双字母代码
+        /// </summary>
+        [Column(TypeName = "varchar(2)")]
+        public string TwoLetterISOCode { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 三字母代码
+        /// </summary>
+        [Column(TypeName = "varchar(3)")]
+        public string ThreeLetterISOCode { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 数字代码
+        /// </summary>
+        public int NumericISOCode { get; set; }
+
+        /// <summary>
+        /// 是否允许配送
+        /// </summary>
+        public bool AllowShipping { get; set; }
+
+        /// <summary>
+        /// 是否启用
+        /// </summary>
+        public bool Enabled { get; set; }
+
+        /// <summary>
+        /// 显示排序
+        /// </summary>
+        public int DisplayOrder { get; set; }
+
+    }
+}