JQuery+Ajax without refreshing the paged instance code

2020-03-30 01:38:27
OfStack

First look at the renderings:
< img Alt = "" border = 0 SRC =" / / files.jb51.net/file_images/article/201402/20140208091437.png ">

The implementation principle is very simple, using the plug-in jquery. Pagination, whenever the page number is clicked asynchronously to the server to fetch the data of the page, a brief introduction is as follows:
Database table structure: simple The four fields are News_id& PI; News_title News_time News_readtimes

Ii. Front page code:


<head runat="server">
    <title>JQuery No refresh pagination </title>
    <link href="Styles/common.css" rel="stylesheet" type="text/css" />
    <link href="Styles/paging.css" rel="stylesheet" type="text/css" />
    <script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
    <script src="Scripts/jquery.pagination.js" type="text/javascript"></script>
    <script type="text/javascript">    
    var pageIndex = 0;
    var pageSize = 3;

    $(function() {       
        InitTable(0);              

        $("#Pagination").pagination(<%=pageCount %>, {
            callback: PageCallback,
            prev_text: ' The previous page ',
            next_text: ' The next page ',
            items_per_page: pageSize,
            num_display_entries: 6,//Number of page entries in the continuous page body section
            current_page: pageIndex,//Current page index
            num_edge_entries: 2//The number of page entries on both sides
        });

        //Page calls
        function PageCallback(index, jq) {           
            InitTable(index);
        }
        //The request data
        function InitTable(pageIndex) {                                
            $.ajax({ 
                type: "POST",
                dataType: "text",
                url: 'Ajax/PagerHandler.ashx',
                data: "pageIndex=" + (pageIndex + 1) + "&pageSize=" + pageSize,
                success: function(data) {                                 
                    $("#Result tr:gt(0)").remove();//Remove the rows in the table with the Id Result, starting with the second row (which changes depending on the page layout)
                    $("#Result").append(data);//Appends the returned data to the table
                }
            });            
        }
    });
    </script>
</head>


<form id="form1" runat="server">
    <center>
        <table id="Result" border="1" cellpadding="5" style="border-collapse: collapse; margin:20px;
            border: solid 1px #85A8BE;width:60%">
            <tr>
                <th style="width: 10%">
                    ID
                </th>
                <th style="width: 60%">
                     The title 
                </th>
                <th style="width: 20%">
                     Update time 
                </th>
                <th style="width: 10%">
                     Click on the quantity 
                </th>
            </tr>
        </table>
        <div id="Pagination" class="paging">
        </div>
    </center>
    </form>

Three, the page background file

Here is mainly to get the total number of records:


public string pageCount = string.Empty;//The total number of entries
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                pageCount = new News().GetNewsCount();
            }
        }

The main one is the ajax handler: pagerhandler.ashx


 public class PagerHandler : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string str = string.Empty;
            int pageIndex = Convert.ToInt32(context.Request["pageIndex"]);
            int size = Convert.ToInt32(context.Request["pageSize"]);
            if (pageIndex == 0)
            {
                pageIndex = 1;
            }
            int count = 0;
            News n = new News();
            List<News> list = n.GetNewsList(pageIndex, size, ref count);
            StringBuilder sb = new StringBuilder();
            foreach (News p in list)
            {
                sb.Append("<tr><td>");
                sb.Append(p.News_id);
                sb.Append("</td><td>");
                sb.Append("<a href='#'>"+p.News_title+"</a>");
                sb.Append("</td><td>");
                sb.Append(p.News_time);
                sb.Append("</td><td>");
                sb.Append(p.News_readtimes);
                sb.Append("</td></tr>");
            }
            str = sb.ToString();
            context.Response.Write(str);
        }
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }