asp.net中利用Jquery+Ajax+Json实现无刷新分页的实例代码_实用技巧

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AjaxJson.aspx.cs" Inherits="AjaxJson" %>

    Jquery+Ajax+Json分页

编号	姓名	性别

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; //总条目数

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string url = "/SupplyAJAX.aspx";
            string strResult = GetRequestJsonString(url, "type=getcount");
            pageCount = strResult.ToString();
        }
    }

#region 后台获取ashx返回的数据
///

/// 后台获取ashx返回的数据
///

    /// 地址
    /// 参数
    ///
    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
}

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 StudentList = new List();
    protected static int RecordCount = 0;
    protected static DataTable dt = CreateDT();
    protected void Page_Load(object sender, EventArgs e)
    {
        switch (Request["type"])
        {
            case "show":
                #region 分页配置
                //具体的页面数
                int pageIndex;
                int.TryParse(Request["pageIndex"], out pageIndex);
                //页面显示条数
                int PageSize = Convert.ToInt32(Request["pageSize"]);
                if (pageIndex == 0)
                {
                    pageIndex = 1;
                }
                #endregion
                DataTable PagedDT = GetPagedTable(dt, pageIndex, PageSize);
                List list = new List();
                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);//这个很关键，否则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 模拟数据
    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, "张三" + i.ToString().PadLeft(4, '0'));
        }
        RecordCount = dt.Rows.Count;
        return dt;
    }
    #endregion

///

/// 对DataTable进行分页,起始页为1
///

    ///
    ///
    ///
    ///
    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)

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