asp.net 无刷新分页实例代码

数据类代码：

namespace DAL
{
    public  class UserManageClass
    {
        /// <summary>
        /// 取得总页数
        /// </summary>
        /// <returns>总页数</returns>
        public int GetPageCount()
        {
            int counts;
            string SqlStr = "select count(0) from [User]";
            counts = new SQLHelper().Content(SqlStr, CommandType.Text);
            return counts;
        }
        /// <summary>
        /// 取出每一页的内容
        /// </summary>
        /// <param name="SatrPage">开始页数</param>
        /// <param name="EndPage">结束页数</param>
        /// <returns>每一页的内容</returns>
        public DataTable GetPageDate(string SatrPage, string EndPage)
        {
            DataTable dt;
            string SqlStr = @"select * from
            (select *, ROW_NUMBER() over(order by id)as no_ from [User])aa
            where aa.no_ between '"+SatrPage+"' and '"+EndPage+"'";
            dt = new SQLHelper().ExecuteQuery(SqlStr, CommandType.Text);
            return dt;
        }

        /// <summary>
        /// 将一个DataTable转换成列表
        /// </summary>
        /// <typeparam name="T">实体对象的类型</typeparam>
        /// <param name="dt">要转换的DataTable</param>
        /// <returns></returns>
        public  List<T> DataTableToEntityList<T>(DataTable dt)
        {
            List<T> entiyList = new List<T>();

            Type entityType = typeof(T);
            PropertyInfo[] entityProperties = entityType.GetProperties();

            foreach (DataRow row in dt.Rows)
            {
                T entity = Activator.CreateInstance<T>();

                foreach (PropertyInfo propInfo in entityProperties)
                {
                    if (dt.Columns.Contains(propInfo.Name))
                    {
                        if (!row.IsNull(propInfo.Name))
                        {
                            propInfo.SetValue(entity, row[propInfo.Name], null);
                        }
                    }
                }

                entiyList.Add(entity);
            }

            return entiyList;
        }

    }
}
</div>

PageService.ashx.cs一般处理程序代码：

namespace LandingSystem
{
    /// <summary>
    /// $codebehindclassname$ 的摘要说明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class PageService : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string action = context.Request["action"];
            if (action == "GetPageCount")
            {
                int counts = new UserManageClass().GetPageCount();
                int page = counts / 3;
                if (counts % 3 != 0)
  &nbs