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本篇內容主要講解“asp.net中如何利用Jquery+Ajax+Json實現無刷新分頁”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“asp.net中如何利用Jquery+Ajax+Json實現無刷新分頁”吧!
復制代碼 代碼如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AjaxJson.aspx.cs" Inherits="AjaxJson" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Jquery+Ajax+Json分頁</title>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
<link href="Styles/tablecloth.css" rel="stylesheet" type="text/css" />
<link href="Styles/pagination.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="Scripts/jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="Scripts/jquery.pagination.js"></script>
<script type="text/javascript">
var pageIndex = 0; //頁面索引初始值
var pageSize = 10; //每頁顯示條數初始化，修改顯示條數，修改這里即可
$(function () {
InitTable(0); //Load事件，初始化表格數據，頁面索引為0（第一頁）
//分頁，PageCount是總條目數，這是必選參數，其它參數都是可選
$("#Pagination").pagination(<%=pageCount %>, {
callback: PageCallback,
prev_text: '上一頁', //上一頁按鈕里text
next_text: '下一頁', //下一頁按鈕里text
items_per_page: pageSize, //顯示條數
num_display_entries: 6, //連續分頁主體部分分頁條目數
current_page: pageIndex, //當前頁索引
num_edge_entries: 2 //兩側首尾分頁條目數
});
//翻頁調用
function PageCallback(index, jq) {
InitTable(index);
}
//請求數據
function InitTable(pageIndex) {
$.ajax({
type: "POST",
dataType: "json",
url: 'SupplyAJAX.aspx', //提交到一般處理程序請求數據
data: "type=show&random=" + Math.random() + "&pageIndex=" + (pageIndex + 1) + "&pageSize=" + pageSize, //提交兩個參數：pageIndex(頁面索引)，pageSize(顯示條數)
error: function () { alert('error data'); }, //錯誤執行方法
success: function (data) {
$("#Result tr:gt(0)").remove(); //移除Id為Result的表格里的行，從第二行開始（這里根據頁面布局不同頁變）
var json = data; //數組
var html = "";
$.each(json.data, function (index, item) {
//循環獲取數據
var id = item.Id;
var name = item.Name;
var sex = item.Sex;
html += "<tr><td>" + id + "</td><td>" + name + "</td><td>" + sex + "</td></tr>";
});
$("#Result").append(html); //將返回的數據追加到表格
}
});
}
});
</script>
</head>
<body>
<form id="form1" runat="server">
<table id="Result" cellspacing="0" cellpadding="0">
<tr>
<th>
編號
</th>
<th>
姓名
</th>
<th>
性別
</th>
</tr>
</table>
<div id="Pagination">
</div>
</form>
</body>
</html>
復制代碼 代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Net;
using System.IO;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class AjaxJson : System.Web.UI.Page
{
public string pageCount = string.Empty; //總條目數
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string url = "/SupplyAJAX.aspx";
string strResult = GetRequestJsonString(url, "type=getcount");
pageCount = strResult.ToString();
}
}
#region 后臺獲取ashx返回的數據
/// <summary>
/// 后臺獲取ashx返回的數據
/// </summary>
/// <param name="relativePath">地址</param>
/// <param name="data">參數</param>
/// <returns></returns>
public static string GetRequestJsonString(string relativePath, string data)
{
string requestUrl = GetRequestUrl(relativePath, data);
try
{
WebRequest request = WebRequest.Create(requestUrl);
request.Method = "GET";
StreamReader jsonStream = new StreamReader(request.GetResponse().GetResponseStream());
string jsonObject = jsonStream.ReadToEnd();
return jsonObject;
}
catch
{
return string.Empty;
}
}
public static string GetRequestUrl(string relativePath, string data)
{
string absolutePath = HttpContext.Current.Request.Url.AbsoluteUri;
string hostNameAndPort = HttpContext.Current.Request.Url.Authority;
string applicationDir = HttpContext.Current.Request.ApplicationPath;
StringBuilder sbRequestUrl = new StringBuilder();
sbRequestUrl.Append(absolutePath.Substring(0, absolutePath.IndexOf(hostNameAndPort)));
sbRequestUrl.Append(hostNameAndPort);
sbRequestUrl.Append(applicationDir);
sbRequestUrl.Append(relativePath);
if (!string.IsNullOrEmpty(data))
{
sbRequestUrl.Append("?");
sbRequestUrl.Append(data);
}
return sbRequestUrl.ToString();
}
#endregion
}
復制代碼 代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Web.UI;
using System.Web.UI.WebControls;
//新增
using System.Web.Script.Serialization;
using System.Text;
public partial class SupplyAJAX : System.Web.UI.Page
{
protected static List<Student> StudentList = new List<Student>();
protected static int RecordCount = 0;
protected static DataTable dt = CreateDT();
protected void Page_Load(object sender, EventArgs e)
{
switch (Request["type"])
{
case "show":
#region 分頁配置
//具體的頁面數
int pageIndex;
int.TryParse(Request["pageIndex"], out pageIndex);
//頁面顯示條數
int PageSize = Convert.ToInt32(Request["pageSize"]);
if (pageIndex == 0)
{
pageIndex = 1;
}
#endregion
DataTable PagedDT = GetPagedTable(dt, pageIndex, PageSize);
List<Student> list = new List<Student>();
foreach (DataRow dr in PagedDT.Rows)
{
Student c = new Student();
c.Id = (Int32)dr["Id"];
c.Name = dr["Name"].ToString();
c.Sex = dr["Sex"].ToString();
list.Add(c);
}
string json = new JavaScriptSerializer().Serialize(list);//這個很關鍵，否則error
StringBuilder Builder = new StringBuilder();
Builder.Append("{");
Builder.Append("\"recordcount\":" + RecordCount + ",");
Builder.Append("\"data\":");
Builder.Append(json);
Builder.Append("}");
Response.ContentType = "application/json";
Response.Write(Builder.ToString());
break;
case "getcount":
Response.Write(dt.Rows.Count);
break;
case "add":
break;
case "update":
break;
case "delete":
break;
}
Response.End();
}
#region 模擬數據
private static DataTable CreateDT()
{
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("Id", typeof(int)) { DefaultValue = 0 });
dt.Columns.Add(new DataColumn("Name", typeof(string)) { DefaultValue = "1" });
dt.Columns.Add(new DataColumn("Sex", typeof(string)) { DefaultValue = "男" });
for (int i = 1; i <= 1000; i++)
{
dt.Rows.Add(i, "張三" + i.ToString().PadLeft(4, '0'));
}
RecordCount = dt.Rows.Count;
return dt;
}
#endregion
/// <summary>
/// 對DataTable進行分頁,起始頁為1
/// </summary>
/// <param name="dt"></param>
/// <param name="PageIndex"></param>
/// <param name="PageSize"></param>
/// <returns></returns>
public static DataTable GetPagedTable(DataTable dt, int PageIndex, int PageSize)
{
if (PageIndex == 0)
return dt;
DataTable newdt = dt.Copy();
newdt.Clear();
int rowbegin = (PageIndex - 1) * PageSize;
int rowend = PageIndex * PageSize;
if (rowbegin >= dt.Rows.Count)
return newdt;
if (rowend > dt.Rows.Count)
rowend = dt.Rows.Count;
for (int i = rowbegin; i <= rowend - 1; i++)
{
DataRow newdr = newdt.NewRow();
DataRow dr = dt.Rows[i];
foreach (DataColumn column in dt.Columns)
{
newdr[column.ColumnName] = dr[column.ColumnName];
}
newdt.Rows.Add(newdr);
}
return newdt;
}
/// <summary>
/// 獲取總頁數
/// </summary>
/// <param name="sumCount">結果集數量</param>
/// <param name="pageSize">頁面數量</param>
/// <returns></returns>
public static int getPageCount(int sumCount, int pageSize)
{
int page = sumCount / pageSize;
if (sumCount % pageSize > 0)
{
page = page + 1;
}
return page;
}
public struct Student
{
public int Id;
public string Name;
public string Sex;
}
}
到此，相信大家對“asp.net中如何利用Jquery+Ajax+Json實現無刷新分頁”有了更深的了解，不妨來實際操作一番吧！這里是億速云網站，更多相關內容可以進入相關頻道進行查詢，關注我們，繼續學習！
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