70 lines
1.9 KiB
C#
70 lines
1.9 KiB
C#
/*******************************************************************************
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* Copyright © 2016 HT.Cloud.Framework 版权所有
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* Author: HT.Cloud
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* Description: WaterCloud快速开发平台
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* Website：
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*********************************************************************************/
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using System.Data;
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namespace HT.Cloud.Code
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{
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public static partial class Extensions
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{
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/// <summary>
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/// 获取表里某页的数据
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/// </summary>
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/// <param name="data">表数据</param>
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/// <param name="pageIndex">当前页</param>
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/// <param name="pageSize">分页大小</param>
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/// <param name="allPage">返回总页数</param>
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/// <returns>返回当页表数据</returns>
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public static DataTable GetPage(this DataTable data, int pageIndex, int pageSize, out int allPage)
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{
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allPage = data.Rows.Count / pageSize;
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allPage += data.Rows.Count % pageSize == 0 ? 0 : 1;
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DataTable Ntable = data.Clone();
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int startIndex = pageIndex * pageSize;
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int endIndex = startIndex + pageSize > data.Rows.Count ? data.Rows.Count : startIndex + pageSize;
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if (startIndex < endIndex)
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for (int i = startIndex; i < endIndex; i++)
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{
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Ntable.ImportRow(data.Rows[i]);
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}
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return Ntable;
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}
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/// <summary>
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/// 根据字段过滤表的内容
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/// </summary>
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/// <param name="data">表数据</param>
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/// <param name="condition">条件</param>
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/// <returns></returns>
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///
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public static DataTable GetDataFilter(DataTable data, string condition)
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{
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if (data != null && data.Rows.Count > 0)
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{
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if (condition.Trim() == "")
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{
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return data;
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}
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else
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{
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DataTable newdt = new DataTable();
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newdt = data.Clone();
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DataRow[] dr = data.Select(condition);
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for (int i = 0; i < dr.Length; i++)
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{
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newdt.ImportRow((DataRow)dr[i]);
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}
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return newdt;
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}
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}
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else
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{
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return null;
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}
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}
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}
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} |