146 lines
4.0 KiB
C#
146 lines
4.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Web;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Data;
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using System.Text;
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using Newtonsoft.Json.Linq;
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namespace FineUI.Examples.grid
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{
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public partial class grid_simulate_tree_database_paging : PageBase
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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if (!IsPostBack)
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{
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BindGrid();
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}
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}
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#region BindGrid
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private void BindGrid()
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{
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// 1.设置总项数（特别注意：数据库分页一定要设置总记录数RecordCount）
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Grid1.RecordCount = GetTotalCount();
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// 2.获取当前分页数据
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DataTable table = GetPagedDataTable(Grid1.PageIndex, Grid1.PageSize);
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// 3.绑定到Grid
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Grid1.DataSource = table;
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Grid1.DataBind();
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}
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private int idGenerator = 100;
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private int GenerateNextID()
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{
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return idGenerator++;
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}
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private int groupGenerator = 0;
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private int GenerateNextGroup()
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{
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groupGenerator++;
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if (groupGenerator > 20)
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{
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groupGenerator = 1;
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}
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return groupGenerator;
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}
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/// <summary>
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/// 模拟返回总项数
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/// </summary>
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/// <returns></returns>
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private int GetTotalCount()
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{
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return SHENG_JSON.Count;
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}
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private DataTable GetPagedDataTable(int pageIndex, int pageSize)
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{
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DataTable table = new DataTable();
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DataColumn column1 = new DataColumn("Id", typeof(int));
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DataColumn column2 = new DataColumn("Name", typeof(String));
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DataColumn column3 = new DataColumn("Group", typeof(String));
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DataColumn column4 = new DataColumn("TreeLevel", typeof(int));
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table.Columns.Add(column1);
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table.Columns.Add(column2);
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table.Columns.Add(column3);
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table.Columns.Add(column4);
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DataRow row = null;
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String group = String.Empty;
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int rowbegin = pageIndex * pageSize;
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int rowend = (pageIndex + 1) * pageSize;
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if (rowend > SHENG_JSON.Count)
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{
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rowend = SHENG_JSON.Count;
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}
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for (int i = rowbegin; i < rowend; i++)
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{
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string sheng = SHENG_JSON[i].Value<string>();
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group = GenerateNextGroup().ToString();
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row = table.NewRow();
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row[0] = GenerateNextID();
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row[1] = sheng;
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row[2] = group;
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row[3] = 0;
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table.Rows.Add(row);
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foreach (string shi in SHI_JSON[sheng])
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{
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row = table.NewRow();
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row[0] = GenerateNextID();
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row[1] = shi;
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row[2] = group;
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row[3] = 1;
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table.Rows.Add(row);
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JArray xianArray = (JArray)XIAN_JSON[shi];
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if (xianArray != null)
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{
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foreach (string xian in xianArray)
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{
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row = table.NewRow();
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row[0] = GenerateNextID();
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row[1] = xian;
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row[2] = group;
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row[3] = 2;
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table.Rows.Add(row);
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}
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}
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}
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}
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return table;
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}
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#endregion
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#region Events
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protected void Grid1_PageIndexChange(object sender, GridPageEventArgs e)
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{
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//Grid1.PageIndex = e.NewPageIndex;
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BindGrid();
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}
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#endregion
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}
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}
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