DataTable转为List对象

 public static List<T> Convert2Object<T>(DataTable dt) where T : new() 
        {
            List<T> list = new List<T>();
            foreach (DataRow dr in dt.Rows)
            {
                list.Add(ToEntity<T>(dr));
            }
            return list;
        }

        public static T ToEntity<T>(DataRow dr) where T : new()
        {
            T model = new T();
            foreach (PropertyInfo pInfo in model.GetType().GetProperties())
            {
                object val = GetValueByColumnName(dr, pInfo.Name);
                pInfo.SetValue(model, val, null);
            }
            return model;
        }

        private static object GetValueByColumnName(System.Data.DataRow dr, string columnName)
        {
            if (dr.Table.Columns.IndexOf(columnName) >= 0)
            {
                if (dr[columnName] == DBNull.Value)
                    return null;
                return dr[columnName];
            }
            return null;
        }