/// <summary>        /// 根据实体类得到表结构        /// </summary>        /// <param name="model">实体类</param>        /// <returns></returns>        private DataTable CreateData<T>(T model)        {            DataTable dataTable = new DataTable(typeof(T).Name);            foreach (PropertyInfo propertyInfo in typeof(T).GetProperties())            {                if (propertyInfo.Name != "CTimestamp")//些字段为oracle中的Timesstarmp类型                {                    dataTable.Columns.Add(new DataColumn(propertyInfo.Name, propertyInfo.PropertyType));                }                else                {                    dataTable.Columns.Add(new DataColumn(propertyInfo.Name, typeof(DateTime)));                }            }            return dataTable;        }

  /// <summary>        /// 实体类转换成DataTable        /// 调用示例：DataTable dt= FillDataTable(Entitylist.ToList());        /// </summary>        /// <param name="modelList">实体类列表</param>        /// <returns></returns>        public DataTable FillDataTable<T>(List<T> modelList)        {            if (modelList == null || modelList.Count == 0)            {                return null;            }            DataTable dt = CreateData(modelList[0]);//创建表结构            foreach (T model in modelList)            {                DataRow dataRow = dt.NewRow();                foreach (PropertyInfo propertyInfo in typeof(T).GetProperties())                {                    dataRow[propertyInfo.Name] = propertyInfo.GetValue(model, null);                }                dt.Rows.Add(dataRow);            }            return dt;        }