长文章手动分页显示代码

　　项目过程中遇到一篇文章篇幅很长，下拉查看非常不便，

此方法实现长文章的手动分页，在后台添加内容过程中，我以“|”作为分页的标志，

1、webConfig中的设置。

<appSettings>
    <add key="PagerSplit" value="|"/>
</appSettings>

当然你也可以设置其他字符作为分页标志。

２、页面上的代码。

<table width="95%" align="center" border="0" class="tablecol" >
  
    <tr  bgcolor="">
        <td align="left"><asp:Label ID="content" runat="server"></asp:Label></td>
    </tr>
 </table>
      <asp:label id="currentpage" runat="server" CssClass="gray">当前页</asp:label> 
                                        <asp:label id="totalpage" runat="server" CssClass="gray"></asp:label> 
             <asp:hyperlink id="lnkfist" runat="server" CssClass="gray">首页</asp:hyperlink>|
             <asp:hyperlink id="lnkprev" runat="server" CssClass="gray">前页</asp:hyperlink>|
             <asp:hyperlink id="lnknext" runat="server" CssClass="gray">下页</asp:hyperlink>|
             <asp:hyperlink id="lnklast" runat="server" CssClass="gray">尾页</asp:hyperlink>

3、后台代码。

　　首先，在后台定义一个私有类型的公共变量，在Page_Load方法的外面

private ContentPager pager;

Page_Load方法里面的代码

文章标题、发文时间、作者、来源之类的信息要单独绑定，不和内容信息一起，因为它们在翻页后是不变的。下面列出绑定代码：

DataSet ds = sadsdd.ExcuteToDataSet("查询语句");
                    dlContent.DataSource = ds;
                    dlContent.DataBind();
                    DataRow drow;
                    drow = ds.Tables["mytable"].Rows[0];
                    string cont = drow["news_content"].ToString();//此部分可以把内容中的HTML代码转换一下，我也省略了
                    //文章分页,关键部分
                    pager = new ContentPager();
                    pager.Lnknext = this.lnknext;
                    pager.Lnkprev = this.lnkprev;
                    pager.Lnklast = this.lnklast;
                    pager.Lnkfist = this.lnkfist;
                    pager.Pagenum = this.currentpage;
                    pager.Pagecount = this.totalpage;
                    pager.DisplayContent = this.content;
                    string query = "&id=" + Request.QueryString["id"].ToString();
                    pager.datapager(cont, query);

其中的dlContent为文章的标题以及发文时间，作者之类的信息。

本分页代码中需要用到的类

public class ContentPager:System.Web.UI.Page
    {
        private System.Web.UI.WebControls.HyperLink lnknext;
        private System.Web.UI.WebControls.HyperLink lnkprev;
        private System.Web.UI.WebControls.HyperLink lnkfist;
        private System.Web.UI.WebControls.HyperLink lnklast;
        private System.Web.UI.WebControls.Label pagenum;
        private System.Web.UI.WebControls.Label pagecount;
        private System.Web.UI.WebControls.Label displaycontent;
        public ContentPager()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }
        public void datapager(string content, string query)
        {
            string PagerSplit = System.Configuration.ConfigurationManager.AppSettings["PagerSplit"];//从web.config中获取分页符，当然这里可以自己定义,为了方便还是放到配置文件或者数据库中。
            string[] contentArray = StringSplit(content, PagerSplit);//这里是一个方法，摘自网上
            int PageCount = contentArray.Length;
            this.pagecount.Text = "共<b><font color='#FF0000'>" + PageCount.ToString() + "</font></b>页";
            int CurPage;
            //确定当前页数
            if (System.Web.HttpContext.Current.Request.Params["Page"] != null)
            {
                CurPage = Convert.ToInt32(System.Web.HttpContext.Current.Request.Params["Page"]);
            }
            else
            {
                CurPage = 1;
            }
            if (CurPage < 1) CurPage = 1;
            if (Convert.ToInt32(System.Web.HttpContext.Current.Request.Params["Page"]) > PageCount)
            {
                CurPage = PageCount;
            }
            //显示当前页数
            this.pagenum.Text = "第<b><font color='#FF0000'>" + CurPage.ToString() + "</font></b>页";
            //下一页
            if (CurPage != PageCount)
            {
                lnknext.NavigateUrl = System.Web.HttpContext.Current.Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurPage + 1) + query;
            }
            //上一页
            if (CurPage > 1)
            {
                lnkprev.NavigateUrl = System.Web.HttpContext.Current.Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurPage - 1) + query;
            }
            //第一页
            if (CurPage != 1)
            {
                lnkfist.NavigateUrl = System.Web.HttpContext.Current.Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(1) + query;
            }
            //最后一页
            if (CurPage != PageCount)
            {
                lnklast.NavigateUrl = System.Web.HttpContext.Current.Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(PageCount) + query;
            }
            displaycontent.Text = contentArray[CurPage - 1].ToString();
        }
 
        #region  System.Web.UI.WebControls.HyperLink DisplayContent
        public System.Web.UI.WebControls.Label DisplayContent
        {
            get
            {
                return this.DisplayContent;
            }
            set
            {
                this.displaycontent = value;
            }
        }
        #endregion
        #region  System.Web.UI.WebControls.HyperLink Lnkprev
        public System.Web.UI.WebControls.HyperLink Lnkprev
        {
            get
            {
                return this.lnkprev;
            }
            set
            {
                this.lnkprev = value;
            }
        }
        #endregion
        #region System.Web.UI.WebControls.HyperLink Lnknext
        public System.Web.UI.WebControls.HyperLink Lnknext
        {
            get
            {
                return this.lnknext;
            }
            set
            {
                this.lnknext = value;
            }
        }
        #endregion
        #region  System.Web.UI.WebControls.HyperLink Lnkfist
        public System.Web.UI.WebControls.HyperLink Lnkfist
        {
            get
            {
                return this.lnkfist;
            }
            set
            {
                this.lnkfist = value;
            }
        }
        #endregion
        #region  System.Web.UI.WebControls.HyperLink Lnklast
        public System.Web.UI.WebControls.HyperLink Lnklast
        {
            get
            {
                return this.lnklast;
            }
            set
            {
                this.lnklast = value;
            }
        }
        #endregion
        #region  System.Web.UI.WebControls.Label Pagenum
        public System.Web.UI.WebControls.Label Pagenum
        {
            get
            {
                return this.pagenum;
            }
            set
            {
                this.pagenum = value;
            }
        }
        #endregion
        #region System.Web.UI.WebControls.Label Pagecount
        public System.Web.UI.WebControls.Label Pagecount
        {
            get
            {
                return this.pagecount;
            }
            set
            {
                this.pagecount = value;
            }
        }
        #endregion
        #region 将字符串分割成数组
        /// <summary>
        /// 将字符串分割成数组
        /// </summary>
        /// <param name="strSource"></param>
        /// <param name="strSplit"></param>
        /// <returns></returns>
        public string[] StringSplit(string strSource, string strSplit)
        {
            string[] strtmp = new string[1];
            int index = strSource.IndexOf(strSplit, 0);
            if (index < 0)
            {
                strtmp[0] = strSource;
                return strtmp;
            }
            else
            {
                strtmp[0] = strSource.Substring(0, index);
                return StringSplit(strSource.Substring(index + strSplit.Length), strSplit, strtmp);
            }
        }
        #endregion
        #region 采用递归将字符串分割成数组
        /// <summary>
        /// 采用递归将字符串分割成数组
        /// </summary>
        /// <param name="strSource"></param>
        /// <param name="strSplit"></param>
        /// <param name="attachArray"></param>
        /// <returns></returns>
        private string[] StringSplit(string strSource, string strSplit, string[] attachArray)
        {
            string[] strtmp = new string[attachArray.Length + 1];
            attachArray.CopyTo(strtmp, 0);
            int index = strSource.IndexOf(strSplit, 0);
            if (index < 0)
            {
                strtmp[attachArray.Length] = strSource;
                return strtmp;
            }
            else
            {
                strtmp[attachArray.Length] = strSource.Substring(0, index);
                return StringSplit(strSource.Substring(index + strSplit.Length), strSplit, strtmp);
            }
        }
        #endregion
    }