asp.net---jquery--ajax 实现滚动条滚动到底部分页显示
前台：aspx页面
1 var bgtime = $(" #date1 ").val(); 2 var overtime = $(" #date2 ").val(); 3 var gsid = "0"; 4 var typename = ""; 5 var divstyle = ""; 6 var bgpage; //定义开始页面 7 var recordCount; //数据总条数 8 var pageCount; //总页数 9 //页面加载完成执行 10 $(document).ready(function(){ 11 //$("#date1").attr("value", getNowFormatDate());//推荐这种写法,可正常赋值 12 $("#date2").attr("value", getNowFormatDate()); 13 bgtime = $(" #date1 ").val(); 14 overtime = $(" #date2 ").val(); 15 typename = "全部"; 16 $("#gs").html(""); 17 $("#data-content").html(""); 18 $("#leibie").html(""); 19 $("#gs").append("<div class=\"xuanze xuanze-active\" name=\"0\">全部公司<span class=\"my-icon mui-icon mui-icon-checkmarkempty\"></span></div>"); 20 $("#leibie").append("<div class=\"xuanze xuanze-active\" name=\"全部\">全部<span class=\"my-icon mui-icon mui-icon-checkmarkempty\"></span></div>"); 21 InitPage(1,10); //这里是调用InitPage(pageIndex,pageSize)方法,pageIndex:起始页，pageSize:每页的数据条数 22 }); 23 //监听滚轮事件 24 window.onscroll = function () { 25 if (getScrollHeight() == getWindowHeight() + getDocumentTop()) { //当滚动条到底时,这里是触发内容 26 //异步请求数据,局部刷新dom 27 if (bgpage >= parseInt(pageCount)) //开始页数大于所有数据总页数 28 { 29 alert("已经到底部了") 30 } 31 else { 32 alert(bgpage) //页数 33 onscoll(bgpage, 10);调用onscoll(pageIndex,pageSize) 34 } 35 } 36 }; 37 //页面加载完成添加数据的方法 38 function InitPage(pageIndex, pageSize) { 39 $.ajax({ 40 url: "SlcBuyTp.ashx", 41 type: 'post', 42 //contentType: "application/json;charset=UTF-8", 43 data: { "gsname": gsid, "bgtime": bgtime, "overtime": overtime, "type": typename, "pageIndex": pageIndex, "pageSize": pageSize },//encodeURI(encodeURI(typename)) escape(typename) 44 cache: true, 45 success: function (d) { 46 //alert(d); 47 //console.log(new Date().getTime()); 48 var obj = eval('(' + d + ')'); //数组 49 recordCount = obj.table2[0].recordcount; //记录数据总条数 50 pageCount = obj.table2[0].pagecount; //记录总页数 51 for (var index = 0; index < obj.gsname.length; index++) { 52 var item = obj.gsname[index]; 53 $("#gs").append("<div class=\"xuanze\" name=\"" + item.gsid + "\">" + item.gsname + "<span class=\"my-icon mui-icon mui-icon-checkmarkempty\"></span></div>"); 54 } 55 for (var index = 0; index < obj.type.length; index++) { //添加类型名称 56 var item = obj.type[index]; 57 $("#leibie").append("<div class=\"xuanze\" name=\"" + item.leibie + "\">" + item.leibie + "<span class=\"my-icon mui-icon mui-icon-checkmarkempty\"></span></div>"); 58 } 59 if (obj.datas.length == 0) { 60 var kong = "<div class=\"tb-content\"><div style=\"with:100%;hight:20px;text-align:center;position: absolute;margin: 50%;\">没有数据</div></div>" 61 $("#data-content").empty().append(kong); 62 } 63 else { 64 for(var i=0;i<obj.datas.length;i++) 65 { 66 var item = obj.datas[i]; 67 divstyle = "<div class=\"tb-content\"><table class=\"tb\"><tr><td style=\"width:35%;\">单据日期：" + item.riqi + "</td><td style=\"width:65%\">订单接收方：" + item.jsgs + "</td></tr><tr><td>物料类别：" + item.typename + "</td><td>物料名称：" + item.name + "</td></tr><tr><td>规格型号：" + item.gg + "</td><td>采购备注：" + item.beizhu + "</td></tr><tr><td>计量单位：" + item.jldw + "</td><td>数量：" + item.shuliang + "</td></tr><tr><td>需求部门：" + item.xqbm + "</td><td>本币含税金额：" + item.bbje + "</td></tr><tr><td>需求人员：" + item.xqry + "</td><td>采购部门：" + item.cgbm + "</td></tr><tr><td>采购人员：" + item.cgry + "</td><td></td></tr></table></div>"; 68 $("#data-content").append(divstyle); 69 } 70 }; 71 bgpage=parseInt(pageIndex) + 1 //起始页+1 72 }, 73 error: function (XMLHttpRequest, textStatus, errorThrown) { 74 alert("请求数据失败,XMLHttpRequest 对象:" + JSON.stringify(XMLHttpRequest) + ", 错误信息:" + textStatus + ", 捕获的错误对象:" + errorThrown); 75 }, 76 }); 77 } 78 //滚动条到底部添加数据的方法 79 function onscoll(pageIndex, pageSize) { 80 $.ajax({ 81 url: "SlcBuyTp.ashx", 82 type: 'post', 83 //contentType: "application/json;charset=UTF-8", 84 data: { "gsname": gsid, "bgtime": bgtime, "overtime": overtime, "type": typename, "pageIndex": pageIndex, "pageSize": pageSize },//encodeURI(encodeURI(typename)) escape(typename) 85 cache: true, 86 success: function (d) { 87 //alert(d); 88 //console.log(new Date().getTime()); 89 var obj = eval('(' + d + ')'); //数组 90 var recordCount = obj.table2[0].recordcount; //记录总条数 91 pageCount = obj.table2[0].pagecount; //记录总页数 92 if (obj.datas.length == 0) { 93 var kong = "<div class=\"tb-content\"><div style=\"with:100%;hight:20px;text-align:center;position: absolute;margin: 50%;\">没有数据</div></div>" 94 $("#data-content").empty().append(kong); 95 } 96 else { 97 for (var i = 0; i < obj.datas.length; i++) { 98 var item = obj.datas[i]; 99 divstyle = "<div class=\"tb-content\"><table class=\"tb\"><tr><td style=\"width:35%;\">单据日期：" + item.riqi + "</td><td style=\"width:65%\">订单接收方：" + item.jsgs + "</td></tr><tr><td>物料类别：" + item.typename + "</td><td>物料名称：" + item.name + "</td></tr><tr><td>规格型号：" + item.gg + "</td><td>采购备注：" + item.beizhu + "</td></tr><tr><td>计量单位：" + item.jldw + "</td><td>数量：" + item.shuliang + "</td></tr><tr><td>需求部门：" + item.xqbm + "</td><td>本币含税金额：" + item.bbje + "</td></tr><tr><td>需求人员：" + item.xqry + "</td><td>采购部门：" + item.cgbm + "</td></tr><tr><td>采购人员：" + item.cgry + "</td><td></td></tr></table></div>"; 100 $("#data-content").append(divstyle); 101 } 102 }; 103 bgpage = parseInt(pageIndex) + 1 //起始页+1 104 }, 105 error: function (XMLHttpRequest, textStatus, errorThrown) { 106 alert("请求数据失败,XMLHttpRequest 对象:" + JSON.stringify(XMLHttpRequest) + ", 错误信息:" + textStatus + ", 捕获的错误对象:" + errorThrown); 107 }, 108 }); 109 }
后台：ashx页面
<%@ WebHandler Language="C#" Class="SlcBuyTp" %> using System; using System.Web; using System.Data; using cschef; public class SlcBuyTp : IHttpHandler { protected static int RecordCount = 0; //记录数据总行数 public void ProcessRequest (HttpContext context) { context.Response.ContentType = "text/plain"; string type; string datas; string gsbh = context.Request.Form["gsname"];//如果是get方式应该用context.Request.QueryString string bgtime = context.Request.Form["bgtime"];//如果是get方式应该用context.Request.QueryString string overtime = context.Request.Form["overtime"];//如果是get方式应该用context.Request.QueryString string typename = context.Request.Form["type"];//如果是get方式应该用context.Request.QueryString int pageIndex = CC.ToInt(context.Request.Form["pageIndex"]); //起始页 int pageSize =CC.ToInt(context.Request.Form["pageSize"]);//每个页面数据条数 #region 分页配置 if (pageIndex == 0) { pageIndex = 1; } #endregion if (gsbh == "0") { if(typename == "全部") { datas = @"select CONVERT(varchar(100), djrq, 23) riqi,wllbmc typename,ghdw jsgs,wlmc name,cpgg gg,bz beizhu,jldw jldw,sl shuliang,bbje bbje,xqbm xqbm,xqry xqry,cgbm cgbm,cgry cgry from t_cgmx where djrq between '"+bgtime+"' and '"+overtime+"'"; } else { datas = @"select CONVERT(varchar(100), djrq, 23) riqi,wllbmc typename,ghdw jsgs,wlmc name,cpgg gg,bz beizhu,jldw jldw,sl shuliang,bbje bbje,xqbm xqbm,xqry xqry,cgbm cgbm,cgry cgry from t_cgmx where djrq between '"+bgtime+"' and '"+overtime+"' and wllbmc='"+typename+"'"; } } else { //gsbh!=0 if(typename == "全部") { datas = @"select CONVERT(varchar(100), djrq, 23) riqi,wllbmc typename,ghdw jsgs,wlmc name,cpgg gg,bz beizhu,jldw jldw,sl shuliang,bbje bbje,xqbm xqbm,xqry xqry,cgbm cgbm,cgry cgry from t_cgmx where djrq between '"+bgtime+"' and '"+overtime+"' and gsbh='"+gsbh+"'"; } else { datas =@"select CONVERT(varchar(100), djrq, 23) riqi,wllbmc typename,ghdw jsgs,wlmc name,cpgg gg,bz beizhu,jldw jldw,sl shuliang,bbje bbje,xqbm xqbm,xqry xqry,cgbm cgbm,cgry cgry from t_cgmx where djrq between '"+bgtime+"' and '"+overtime+"' and gsbh='"+gsbh+"'and wllbmc='"+typename+"'"; } } DataTable TbDatas = new DataTable(); TbDatas = DBHelper.DBContext.Default.GetDataTable(datas); RecordCount = TbDatas.Rows.Count; //数据总条数 DataTable dtData = new DataTable(); //数据表 if(RecordCount==0) //如果没有数据 { dtData = TbDatas; } else //否则 { dtData = GetPagedTable(TbDatas, pageIndex, pageSize);//调用 GetPagedTable(DataTable dt, int PageIndex, int PageSize)方法，为TbDatas进行分页 } DataTable dtCount = new DataTable(); //记录TbDatas数据表的总数据条数和总页数的表 dtCount.TableName = "table2"; dtCount.Columns.Add("recordcount"); //给一列命名 dtCount.Rows.Add(RecordCount); //添加dt的行数到dtCount dtCount.Columns.Add("pagecount"); //添加dt的行名，第二列 dtCount.Rows[0]["pagecount"]=getPageCount(TbDatas.Rows.Count,pageSize); //将总数据页数添加到pagecount列 dtData.TableName = "datas"; DataSet ds = new DataSet(); ds.Tables.Add(dtData); ds.Tables.Add(dtCount); string JsonString1 = Newtonsoft.Json.JsonConvert.SerializeObject(ds); //转换成json context.Response.Write(JsonString1); } /// <summary> /// 对DataTable进行分页,起始页为1 /// </summary> /// <param name="dt">查询出的数据表</param> /// <param name="PageIndex">起始页</param> /// <param name="PageSize">每页数据条数</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> /// 获取总页数 /// </summary> /// <param name="sumCount">结果集数量</param> /// <param name="pageSize">页面数量</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 bool IsReusable { get { return false; } } }
