修改导出bug

代码/System.Model/T_Cus_VipInfo.cs

         private string _f_sex;
         private string _f_label;
         private string _f_recommender;
-        private int? _f_state;
+        private int _f_state;
         private string _f_note;
         private string _f_city;
         private string _f_nickname;
         private string _f_address;
         private string _f_address1;
-        private DateTime? _f_regtime;
+        private DateTime _f_regtime;
         /// <summary>
         /// id标识，自增
         /// </summary>
         /// <summary>
         /// 状态：0禁用 1启用 2删除
         /// </summary>
-        public int? F_State
+        public int F_State
         {
             set { _f_state = value; }
             get { return _f_state; }
         /// <summary>
         /// 注册时间
         /// </summary>
-        public DateTime? F_RegTime
+        public DateTime F_RegTime
         {
             set { _f_regtime = value; }
             get { return _f_regtime; }
         /// <summary>
         /// 添加时间
         /// </summary>
-        public DateTime? F_CreateOn { get; set; }
+        public DateTime F_CreateOn { get; set; }
         /// <summary>
         /// 添加工号
         /// </summary>
         /// <summary>
         /// 最后一次修改时间
         /// </summary>
-        public DateTime? F_LastModifyOn { get; set; }
+        public DateTime F_LastModifyOn { get; set; }
         /// <summary>
         /// 最后一次修改工号
         /// </summary>
         /// <summary>
         /// 删除时间
         /// </summary>
-        public DateTime? F_DeleteOn { get; set; }
+        public DateTime F_DeleteOn { get; set; }
         /// <summary>
         /// 删除工号
         /// </summary>
         /// <summary>
         /// 鞋码
         /// </summary>				
-        public int? F_ShoeSize { get; set; }
+        public int F_ShoeSize { get; set; }
         /// <summary>
         /// 会员积分
         /// </summary>				

代码/TVShoppingCallCenter_ZLJ/Models/Inputs/VIPInfoInput.cs

         /// <summary>
         /// 鞋码
         /// </summary>				
-        public int? shoesize { get; set; }
+        public int shoesize { get; set; }
         /// <summary>
         /// 会员积分
         /// </summary>