功能简介：主要功能就是分页显示数据了，可在配置文件中配置每页要显示的页码,可以做多条件联合查询，这里只是做一个简单的查询。欢迎拍砖，有问题的还望大虾们斧正哈。看看这个效果图，无刷新的噢！！
具体实现请看源码：
1、aspx页面
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AjaxPage.aspx.cs" Inherits="MeasurementWellCurve.UI.AjaxPage" %>
ajax分页
2、具体实现JS
var pageIndex = 1; //页索引
var where = " where 1=1";
$(function() {
BindData();
// GetTotalCount(); //总记录条数
//GetPageCount(); //总页数绑定
//第一页按钮click事件
$("#first").click(function() {
pageIndex = 1;
$("#lblCurent").text(1);
BindData();
});
//上一页按钮click事件
$("#previous").click(function() {
if (pageIndex != 1) {
pageIndex--;
$("#lblCurent").text(pageIndex);
}
BindData();
});
//下一页按钮click事件
$("#next").click(function() {
var pageCount = parseInt($("#lblPageCount").text());
if (pageIndex != pageCount) {
pageIndex++;
$("#lblCurent").text(pageIndex);
}
BindData();
});
//最后一页按钮click事件
$("#last").click(function() {
var pageCount = parseInt($("#lblPageCount").text());
pageIndex = pageCount;
BindData();
});
//查询
$("#btnSearch").click(function() {
where = " where 1=1";
var csbh = $("#txtCSBH").val();
if (csbh != null && csbh != NaN) {
pageIndex = 1;
where += " and csbh like '%" + csbh + "%'";
}
BindData();
});
})
//AJAX方法取得数据并显示到页面上
function BindData() {
$.ajax({
type: "get", //使用get方法访问后台
dataType: "json", //返回json格式的数据
url: "../AjaxService/JgcsService.ashx", //要访问的后台地址
data: { "pageIndex": pageIndex, "where": where }, //要发送的数据
ajaxStart: function() { $("#load").show(); },
complete: function() { $("#load").hide(); }, //AJAX请求完成时隐藏loading提示
success: function(msg) {//msg为返回的数据，在这里做数据绑定
var data = msg.table;
if (data.length != 0) {
var t = document.getElementById("tb_body"); //获取展示数据的表格
while (t.rows.length != 0) {
t.removeChild(t.rows[0]); //在读取数据时如果表格已存在行．一律删除
}
}
$.each(data, function(i, item) {
$("#jgcsTable").append("
| " + item.CSBH + " | " + item.K + " | " + item.C +
" | " + item.S + " | " + item.DSB + " | " + item.TCBJ +
" | " + item.LHDCYL + " | " + item.BJJL + " | " + item.YLXS +
" | " + item.FCTH + " | " +
" "id='btnInsert' style="max-width:90%" /> |
");
})
},
error: function() {
var t = document.getElementById("tb_body"); //获取展示数据的表格
while (t.rows.length != 0) {
t.removeChild(t.rows[0]); //在读取数据时如果表格已存在行．一律删除
}
alert("加载数据失败");
} //加载失败，请求错误处理
//ajaxStop:$("#load").hide()
});
GetTotalCount();
GetPageCount();
bindPager();
}
// 页脚属性设置
function bindPager() {
//填充分布控件信息
var pageCount = parseInt($("#lblPageCount").text()); //总页数
if (pageCount == 0) {
document.getElementById("lblCurent").innerHTML = "0";
}
else {
if (pageIndex > pageCount) {
$("#lblCurent").text(1);
}
else {
$("#lblCurent").text(pageIndex); //当前页
}
}
document.getElementById("first").disabled = (pageIndex == 1 || $("#lblCurent").text() == "0") ? true : false;
document.getElementById("previous").disabled = (pageIndex <= 1 || $("#lblCurent").text() == "0") ? true : false;
document.getElementById("next").disabled = (pageIndex >= pageCount) ? true : false;
document.getElementById("last").disabled = (pageIndex == pageCount || $("#lblCurent").text() == "0") ? true : false;
}
//AJAX方法取得总页数
function GetPageCount() {
var pageCount;
$.ajax({
type: "get",
dataType: "text",
url: "../AjaxService/JgcsService.ashx",
data: { "wherePageCount": where }, //"wherePageCount" + where,个人建议不用这种方式
async: false,
success: function(msg) {
document.getElementById("lblPageCount").innerHTML = msg;
}
});
}
//AJAX方法取得记录总数
function GetTotalCount() {
var pageCount;
$.ajax({
type: "get",
dataType: "text",
url: "../AjaxService/JgcsService.ashx",
data: { "whereCount": where },
async: false,
success: function(msg) {
document.getElementById("lblToatl").innerHTML = msg;
}
});
}
3、一般处理程序ashx中的代码
public class JgcsService : IHttpHandler
{
readonly int pageSize = 15;
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
//不让浏览器缓存
context.Response.Buffer = true;
context.Response.ExpiresAbsolute = DateTime.Now.AddDays(-1);
context.Response.AddHeader("pragma", "no-cache");
context.Response.AddHeader("cache-control", "");
context.Response.CacheControl = "no-cache";
string result = "";
//记录总条数
if (!string.IsNullOrEmpty(context.Request["whereCount"]))
{
string where = context.Request.Params["whereCount"].ToString();
result = Jgcs.GetToatlNum(where).ToString();
}
//总页数
if (!string.IsNullOrEmpty(context.Request["wherePageCount"]))
{
string where = context.Request.Params["wherePageCount"].ToString();
int count = Jgcs.GetToatlNum(where);
string pageCount = Math.Ceiling((double)count / (double)pageSize).ToString();
result = pageCount;
}
//分页数据
if (!string.IsNullOrEmpty(context.Request.Params["pageIndex"])
&& !string.IsNullOrEmpty(context.Request.Params["where"]))
{
string where = context.Request.Params["where"].ToString();
int pageIndex = Convert.ToInt32(context.Request.Params["pageIndex"]);
result = GetJsonString(where, pageIndex);
}
context.Response.Write(result);
}
///
/// 返回json串
/// ///
查询条件
///
页面索引
///
json串 protected string GetJsonString(string where, int pageIndex)
{
DataTable dt = Jgcs.GetInfo("csbh", where, pageIndex, pageSize);
return JsonHelper.DataTable2Json(dt, "table");
}
public bool IsReusable
{
get
{
return false;
}
}
}
4、分页查询的方法可看可不看了，都会这个吧，做示例简单的开了个头，应用时在处理方面可不要这么去写噢，贴下来仅做一个参考
分页方法
///
/// 分页查询的方法
/// ///
排序字段
///
查询条件
///
当前页
///
页大小
///
public static DataTable GetInfo(string orderFile, string where, int pageNumber, int pageSize)
{
DBHelper db = new DBHelper();
string str = @"with TestInfo as
(
select row_number() over(order by {0} desc) as rowNumber,* from
(select CSBH,K,C,S,DSB,TCBJ,LHDCYL,BJJL,BJLX,YLXS,FCTH,KHM1,KHM2,QKCS from YW_JGCS) temp {1}
)
select * from TestInfo
where rowNumber between (({2}-1)*{3}+1) and {2}*{3}";
string strSql = string.Format(str, orderFile, where, pageNumber, pageSize);
try
{
db.DBOpen();
return db.DbDataSet(strSql);
}
catch (Exception ex)
{
throw ex;
}
finally
{
db.DBClose();
}
}
///
/// 结果参数总条数
/// ///
///
public static int GetToatlNum(string where)
{
DBHelper db = new DBHelper();
string strSql = string.Format(@"select count(*) from (select CSBH,K,C,S,DSB,TCBJ,LHDCYL,BJJL,BJLX,YLXS,FCTH,KHM1,KHM2,QKCS from YW_JGCS) temp {0}", where);
try
{
db.DBOpen();
return (int)db.ExecuteScalar(strSql);
}
catch (Exception ex)
{
throw ex;
}
finally
{
db.DBClose();
}
}
好了，代码就这么多
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