asp.net 新闻内容过长要实现自动分页!
新闻内容过长要实现分页!,求好用的代码,并且漂亮。。。实用的 --------------------编程问答-------------------- 我用的是datalist
前台的HTML代码
<asp:HyperLink ID="lnkPrev" runat="server">上一页</asp:HyperLink> <asp:Label ID="lblCurrentPage" runat="server" Text="Label"></asp:Label> <asp:HyperLink ID="lnkNext" runat="server">下一页</asp:HyperLink>
你可以吧HyperLink换成图片连接之类的都可以
后台代码
--------------------编程问答-------------------- 有一个例子 成功例子 --------------------编程问答-------------------- 超过多少字 对劈。。地址栏获取后台对劈后页数。。 --------------------编程问答-------------------- --------------------编程问答-------------------- 以下代码我测试过,复制后可使用
DataTable dt = //这里的数据库连接取得新闻数据我就不写了,dt存放数据
PagedDataSource pds = new PagedDataSource();
pds.DataSource = dt.DefaultView;
pds.AllowPaging = true;
pds.PageSize = 19;
int CurPage = 1;
//当前页面从Page查询参数获取
if (Request.QueryString["Page"] != null)
CurPage = Convert.ToInt32(Request.QueryString["Page"]);
else
CurPage = 1;
pds.CurrentPageIndex = CurPage - 1;
lblCurrentPage.Text = "第 " + CurPage.ToString() + "页";
if (!pds.IsFirstPage)
lnkPrev.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurPage - 1);
if (!pds.IsLastPage)
lnkNext.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurPage + 1);
//把PagedDataSource 对象赋给Repeater控件
dal_news.DataSource = pds;
dal_news.DataBind();
后台代码如下:
首先引入命名空间:using System.Text.RegularExpressions;
下面为分页函数:
public string NoHTML(string Htmlstring) //去除HTML标记
{
//删除脚本
Htmlstring = Regex.Replace(Htmlstring, @" <script[^>]*?>.*? </script>", "", RegexOptions.IgnoreCase);
//删除HTML
Htmlstring = Regex.Replace(Htmlstring, @" <(.[^>]*)>", "", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"-->", "", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @" <!--.*", "", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(lt|#60);", " <", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(nbsp|#160);", " ", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"(\d+);", "", RegexOptions.IgnoreCase);
Htmlstring.Replace(" <", "");
Htmlstring.Replace(">", "");
Htmlstring.Replace("\r\n", "");
Htmlstring = HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();
return Htmlstring;
}
public string OutputBySize(string p_strContent)//分页函数
{
string m_strRet = "";
int m_intPageSize = 1000;//文章每页大小
int m_intCurrentPage = 1;//设置第一页为初始页
int m_intTotalPage = 0;
int m_intArticlelength = NoHTML(p_strContent).Length;//文章长度
if (m_intPageSize < m_intArticlelength)
{//如果每页大小大于文章长度时就不用分页了
if (m_intArticlelength % m_intPageSize == 0)
{//set total pages count
m_intTotalPage = m_intArticlelength / m_intPageSize;
}
else
{//if the totalsize
m_intTotalPage = m_intArticlelength / m_intPageSize + 1;
}
if (Request.QueryString["pages"] != null)
{//set Current page number
try
{//处理不正常的地址栏的值
m_intCurrentPage = Convert.ToInt32(Request.QueryString["pages"]);
if (m_intCurrentPage > m_intTotalPage)
m_intCurrentPage = m_intTotalPage;
}
catch
{
m_intCurrentPage = m_intCurrentPage;
}
}
//set the page content 设置获取当前页的大小
if (m_intCurrentPage < m_intTotalPage)
{
m_intPageSize = m_intCurrentPage < m_intTotalPage ? m_intPageSize : (m_intArticlelength - m_intPageSize * (m_intCurrentPage - 1));
m_strRet += p_strContent.Substring(m_intPageSize * (m_intCurrentPage - 1), m_intPageSize);
}
else if (m_intCurrentPage == m_intTotalPage)
{
int mm_intPageSize = m_intArticlelength - m_intPageSize * (m_intCurrentPage - 1);
m_strRet += p_strContent.Substring(m_intArticlelength - mm_intPageSize);
}
string m_strPageInfo = " <p> </p>";
for (int i = 1; i <= m_intTotalPage; i++)
{
if (i == m_intCurrentPage)
m_strPageInfo += "第" + i + "页 | ";
else
m_strPageInfo += " <a href=view.aspx?pages="+i+">" + i + " </a>|";
}
//输出显示各个页码
labPageNumber.Text = m_strPageInfo;
}
else
{
m_strRet += p_strContent;
}
return m_strRet;
}
page_load 里的代码:
lblContent.Text = OutputBySize(str);
前台需要的控件:
<asp:Label ID="lblContent" runat="server"></asp:Label>
<asp:Label ID="labPageNumber" Font-Size="14px" runat="server"> </asp:Label>
--------------------编程问答-------------------- AspNetPage 网上有淘宝 排排样式的样式,加上很好看 --------------------编程问答-------------------- --------------------编程问答-------------------- 学习.. --------------------编程问答-------------------- mark --------------------编程问答-------------------- 最简单的方法录入文章的时候插入一个分页符
显示的时候用分页符隔开分页显示
这是一对多的设计.
在添加时,想分多少页,就添加多少次.
或添加文章时,通过标识符分页或按照分页添加文章内容
或public string NoHTML(string Htmlstring) //去除HTML标记
{
Htmlstring = Regex.Replace(Htmlstring, @" <(.[^>]*)>", "", RegexOptions.IgnoreCase);
}
在分页
--------------------编程问答-------------------- 楼上回答好多了,学习下呗 --------------------编程问答-------------------- 自己加分页符是最简单的,也是最实用的。 --------------------编程问答-------------------- HTML版本 怎么弄? --------------------编程问答-------------------- 关注了。。
补充:.NET技术 , ASP.NET