几款jquery json 分页实例代码(1/5)

#region getjsondata
    /// <summary>
    /// 得到json数据
    /// </summary>
    /// <param name="ds">dataset</param>
    /// <param name="keyfileds">查找的字段，例: id,name,content</param>
    /// <returns></returns>
    public static string getjsondata(dataset ds,string keyfileds)
    {
        stringbuilder html = new stringbuilder();
        string[] alist;
        alist = keyfileds.split(',');      
        html.append("[");
        for (int i = 0; i < ds.tables[0].rows.count; i++)
        {
            html.append("{");
            int j = 0;
            foreach (string str in alist)
            {
                html.append("_"+ j++ +":"" + ds.tables[0].rows[i][str].tostring() + "",");
            }
            html.remove(html.length - 1, 1);
            html.append("},");
        }
        html.remove(html.length - 1, 1);
        html.append("]");
        return html.tostring();
    }
    #endregion

    #region 分页样式 1 2 3 4 5 6 7 8 ...
    /// <summary>
    /// 分页样式 1 2 3 4 5 6 7 8 ...
    /// </summary>
    /// <param name="count"></param>
    /// <returns></returns>
    public static string getpager(jsonmodel jm)
    {
        stringbuilder html = new stringbuilder();
        html.append("<div class='page_span'>");
        html.append("<a href='网页特效:content(1)'>首页</a>");
        //计算总页数
        if (jm.count % jm.pageindexcount == 0)
            jm.pagecount = jm.count / jm.pageindexcount;
        else
            jm.pagecount = jm.count / jm.pageindexcount + 1;

        //计算开始页-结束页
        if (jm.currentpageindex <= jm.pagecount)
        {
            if (jm.currentpageindex / jm.extpage >= 1 && jm.currentpageindex <= jm.pagecount)
            {
                int extpage = jm.currentpageindex / jm.extpage;
                jm.startpage = extpage * jm.extpage - 1;
                jm.endpage = jm.startpage + jm.extpage+1;
            }
            else
            {
                jm.endpage = jm.startpage + jm.extpage+1;
            }
        }
        if (jm.endpage > jm.pagecount)
            jm.endpage = jm.pagecount;
        if (jm.startpage < 1)
            jm.startpage = 1;
        for (int i = jm.startpage; i <= jm.endpage; i++)
        {
            if (i == jm.currentpageindex)
            {
                html.append("<a href='javascript:content(" + i + ")'>");
                html.append("<font color=red >" + i + "</font>");
                html.append("</a>");
            }
            else
            {

                html.append("<a href='javascript:content(" + i + ")'>");
                html.append(i);
                html.append("</a>");
            }

        }
        html.append("<a href='javascript:content(" + jm.pagecount + ")'>末页</a>");
        html.append("</div>");
        return html.tostring();
    }
    #endregion

    #region 分页样式 上一页 下一页
    /// <summary>
    ///
    /// </summary>
    /// <param name="jm">jm.currentpageindex 当前页，jm.pagecount总页</param>
    /// <returns></returns>
    public static string getsmiplepager(jsonmodel jm)
    {
        stringbuilder html = new stringbuilder();

        //计算总页数
        if (jm.count % jm.pageindexcount == 0)
            jm.pagecount = jm.count / jm.pageindexcount;
        else
            jm.pagecount = jm.count / jm.pageindexcount + 1;

        html.append("<div class='page_span'>");
        html.append("<a href='javascript:content(1)'>首页</a>");
        if (jm.currentpageindex > 1)
        {
            html.append("<a href='javascript:content(" + (jm.currentpageindex - 1) + ")'>上一页</a>");
        }
        if (jm.currentpageindex < jm.pagecount)
        {
            html.append("<a href='javascript:content(" + (jm.currentpageindex + 1) + ")'>下一页</a>");
        }
        html.append("<a href='javascript:content(" + jm.pagecount + ")'>末页</a>");

        //搜索框
        html.append(" <input id='t_page' style='width:30px;border:1px solid #acacac' class='btn' /> <input type='button' value='go' onclick='if($("#t_page").val()=="")alert("请输入页码"); else if($("#t_page").val()>" + jm.pagecount + "||$("#t_page").val()==0){alert("请输入正确的页码！")}else{content($("#t_page").val())}'>");
        html.append("</div>");
        return html.tostring();
    }
    #endregion

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