C#.NET 权限管理系统组件 - 大数据只获取更新部分数据列的标准例子

程序的运行效果如下：

1：获取时，只获取需要的列，不需要的列不获取，主要原因是：因为数据量大获取所有的列传输的数据量大，有些敏感数据未必需要都传输在网络上，其次是更新数据时的版本问题尽量避免，你也在改他也在改，隐藏的数据列也更新了，并不是很好甚至可能引起一些没必要的错误。

 

        #region public DataTable GetAddressDataTableByPage(BaseUserInfo userInfo, string organizeId, string searchValue, out int recordCount, int pageIndex = 0, int pageSize = 100, string sort = null)
        /// <summary>
        /// 获取内部通讯录         /// </summary>
        /// <param name="userInfo">用户</param>
        /// <param name="organizeId">组织机构主键</param>
        /// <param name="search">查询内容</param>
        /// <param name="pageSize">分页的条数</param>
        /// <param name="pageIndex">当前页数</param>
        /// <returns>数据表</returns>
        public DataTable GetAddressDataTableByPage(BaseUserInfo userInfo, string organizeId, string searchValue, out int recordCount, int pageIndex = 0, int pageSize = 100, string sort = null)         {             // 写入调试信息
            #if (DEBUG)
                int milliStart = BaseBusinessLogic.StartDebug(userInfo, MethodBase.GetCurrentMethod());             #endif

            // 加强安全验证防止未授权匿名调用
            #if (!DEBUG)                 LogOnService.UserIsLogOn(userInfo);             #endif              DataTable dataTable = new DataTable(BaseStaffEntity.TableName);             using (IDbHelper dbHelper = DbHelperFactory.GetHelper(BaseSystemInfo.UserCenterDbType))             {                 try                 {                     dbHelper.Open(UserCenterDbConnection);                     // 这里是不获取所有的列，只获取自己需要的列的标准方法
                    BaseStaffManager staffManager = new BaseStaffManager(dbHelper, userInfo);                     staffManager.SelectField = "Id, RealName, DepartmentName, DutyName, OfficePhone, Mobile, ShortNumber, Email, OICQ, Description";                     dataTable = staffManager.GetAddressDataTableByPage(organizeId, searchValue, out recordCount, pageSize, pageIndex, sort);                     dataTable.TableName = BaseStaffEntity.TableName;                     BaseLogManager.Instance.Add(dbHelper, userInfo, this.serviceName, AppMessage.StaffService_GetAddressPageDT, MethodBase.GetCurrentMethod());                 }                 catch (Exception ex)                 {                     BaseExceptionManager.LogException(dbHelper, userInfo, ex);                     throw;                 }                 finally                 {                     dbHelper.Close();                 }             }              // 写入调试信息
            #if (DEBUG)                 BaseBusinessLogic.EndDebug(MethodBase.GetCurrentMethod(), milliStart);             #endif
            return dataTable;         }         #endregion

2：更新时，只更新数据有变化的记录，没有变化的记录不进行更新。

        #region private void BatchSave() 批量保存
        /// <summary>
        /// 批量保存         /// </summary>
        private void BatchSave()         {             // 去掉未修改的数据，提高运行速度
            for (int i = this.DTStaff.Rows.Count - 1; i >= 0; i--)             {                 if (this.DTStaff.Rows[i].RowState == DataRowState.Unchanged)                 {                     this.DTStaff.Rows.RemoveAt(i);                 }             }             DotNetService.Instance.StaffService.BatchUpdateAddress(this.UserInfo, this.DTStaff);             this.Search();             if (BaseSystemInfo.ShowInformation)             {                 // 批量保存，进行提示
                MessageBox.Show(AppMessage.MSG0012, AppMessage.MSG0000, MessageBoxButtons.OK, MessageBoxIcon.Information);             }         }         #endregion

 

        /// <summary>
        /// 批量更新通讯地址         /// </summary>
        /// <param name="userInfo">用户</param>
        /// <param name="dtStaff">数据表</param>
        /// <returns>影响行数</returns>
        public int BatchUpdateAddress(BaseUserInfo userInfo, DataTable dtStaff)         {             // 写入调试信息
            #if (DEBUG)
                int milliStart = BaseBusinessLogic.StartDebug(userInfo, MethodBase.GetCurrentMethod());             #endif

            // 加强安全验证防止未授权匿名调用
            #if (!DEBUG)                 LogOnService.UserIsLogOn(userInfo);             #endif

            int returnValue = 0;             using (IDbHelper dbHelper = DbHelperFactory.GetHelper(BaseSystemInfo.UserCenterDbType))             {                 try                 {                     dbHelper.Open(UserCenterDbConnection);                     // 这里是只更新部分字段的例子
                    foreach (DataRow dr in dtStaff.Rows)                     {                         SQLBuilder sqlBuilder = new SQLBuilder(dbHelper);                         sqlBuilder.BeginUpdate(BaseStaffEntity.TableName);                         // 这里是界面上显示的字段，需要更新的字段
                        sqlBuilder.SetValue(BaseStaffEntity.FieldOfficePhone, dr[BaseStaffEntity.FieldOfficePhone].ToString());                         sqlBuilder.SetValue(BaseStaffEntity.FieldMobile, dr[BaseStaffEntity.FieldMobile].ToString());                         sqlBuilder.SetValue(BaseStaffEntity.FieldShortNumber, dr[BaseStaffEntity.FieldShortNumber].ToString());                         sqlBuilder.SetValue(BaseStaffEntity.FieldEmail, dr[BaseStaffEntity.FieldEmail].ToString());                         sqlBuilder.SetValue(BaseStaffEntity.FieldOICQ, dr[BaseStaffEntity.FieldOICQ].ToString());                         sqlBuilder.SetValue(BaseStaffEntity.FieldDescription, dr[BaseStaffEntity.FieldDescription].ToString());                         sqlBuilder.SetWhere(BaseStaffEntity.FieldId, dr[BaseStaffEntity.FieldId].ToString());                         returnValue += sqlBuilder.EndUpdate();                     }                     BaseLogManager.Instance.Add(dbHelper, userInfo, this.serviceName, AppMessage.StaffService_BatchUpdateAddress, MethodBase.GetCurrentMethod());                 }                 catch (Exception ex)                 {                     BaseExceptionManager.LogException(dbHelper, userInfo, ex);                     throw;                 }                 finally                 {                     dbHelper.Close();                 }             }              // 写入调试信息
            #if (DEBUG)                 BaseBusinessLogic.EndDebug(MethodBase.GetCurrentMethod(), milliStart);             #endif

            return returnValue;         }

希望能对需要的人起点儿参考作用。