repeater留言板[转]

做了一个网站，其中的在线留言板块是用Repeater来显示留言的，这样可以用少的代码还实现多的功能，但是不知道怎么分页，要是留言过多就会使页面变的很长，能过查看众多网友的经验，知道用PagedDataSource来实现。

Repeater分页，需要依靠PagedDataSource。这个类存在于System.Web.UI.WebControls命名空间。它的作用是作为数据源与数据显示控件的中间介质。如：

　　数据源－>PagedDataSource－>数据绑定控件

　　之间的关系通过以下代码来实现：

　　PagedDataSource pds=new PagedDataSource ();

　　pds.DataSource=dataTable;

　　repeater1.DataSource=pds;

　　repeater1.DataBind();

这是前台aspx页代码

<div id="onlinely">
<div id="xianshily">
<asp:Repeater runat="server" ID="Repeater1">
<ItemTemplate>
<ul id="xianshi1">
<li id="xianshi2">
<ul class="ly1">
<li class="ly2">留言人：</li>
<li class="ly3"><asp:Label runat="server" ID="lyren" Text='<%#Eval("lyname") %>'></asp:Label></li>
<li class="ly4">时间:</li>
</ul>
<ul class="ly1">
<li class="ly2">留言内容：</li>
<li class="ly3"><asp:Label runat="server" ID="lynr" Text='<%#Eval("neirong") %>'></asp:Label></li>
<li class="ly4"><asp:Label runat="server" ID="lyt" Text='<%#Eval("lytime") %>'></asp:Label></li>
</ul>
<ul class="ly1">
<li class="ly2">回复：</li>
<li class="ly3"><asp:Label runat="server" ID="lyhf" Text='<%#Eval("huifu") %>'></asp:Label></li>
<li class="ly4"><asp:Label runat="server" ID="hft" Text='<%#Eval ("hftime") %>'></asp:Label></li>
</ul>
</li></ul>
</ItemTemplate>
</asp:Repeater>
</div>
<div id="pages">
<asp:hyperlink id="lnkPrev" runat="server">上页</asp:hyperlink>
<asp:hyperlink id="lnkNext" runat="server">下页</asp:hyperlink>
第<asp:label id="lblCurrentPage" runat="server"></asp:label>页
 共 <asp:label id="lblTotalPage" runat="server"></asp:label>页
</div>
<div id="ly">
<ul>
<li>
<ul class="ly5">
<li class="ly6">姓名：</li>
<li class="ly7"><asp:TextBox runat="server" ID="lyname"></asp:TextBox></li>
</ul>
<ul class="ly5">
<li class="ly6">留言内容：</li>
<li class="ly7"><asp:TextBox runat="server" ID="lyneirong" TextMode="MultiLine" Wrap="true" Height="100px" Width="300px"></asp:TextBox></li>
</ul>

</li>
</ul>

<div id="tijiao">
<ul>
<li><asp:Button runat="server" ID="Button1" Text="提交" onclick="tijiao_Click" /></li>
<li><asp:Button runat="server" ID="quxiao" Text="取消" onclick="quxiao_Click" /></li>
</ul>
</div>
</div>
</div>

这是aspx.cs页代码：

using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Data.Common;

public partial class onlinely : System.Web.UI.Page
{

    SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["zgbygy"].ConnectionString);

    protected void Page_Load(object sender, EventArgs e)
    {
        conn.Open();
        string sql = "select * from liuyan order by lytime desc";
        SqlCommand cmd = new SqlCommand(sql, conn);
        SqlDataAdapter sda = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        sda.Fill(ds);
        PagedDataSource pgds=new PagedDataSource();
        pgds.DataSource = ds.Tables[].DefaultView;
        //        设置允许分页
        pgds.AllowPaging = true;
        //        每页显示为8行
        pgds.PageSize = ;
        //        显示总共页数
        lblTotalPage.Text = pgds.PageCount.ToString();
        //     当前页
        int CurrentPage;
        //     请求页码为不为null设置当前页，否则为第一页
        if (Request.QueryString["Page"] != null)
        {

            CurrentPage = Convert.ToInt32(Request.QueryString["Page"]);
        }

        else
        {
            CurrentPage = ;
        }
        //   当前页所引为页码-1
        pgds.CurrentPageIndex = CurrentPage - ;
        //   显示当前页码
        lblCurrentPage.Text = CurrentPage.ToString();
        //   如果不是第一页，通过参数Page设置上一页为当前页-1，否则不显示连接
        if (!pgds.IsFirstPage)
        {
            //            Request.CurrentExecutionFilePath为当前请求虚拟路径
            lnkPrev.NavigateUrl = Request.CurrentExecutionFilePath + );
        }
        //        End If
        //   如果不是最后一页，通过参数Page设置下一页为当前页+1，否则不显示连接
        if (!pgds.IsLastPage)
        {
            //    Request.CurrentExecutionFilePath为当前请求虚拟路径
            lnkNext.NavigateUrl = Request.CurrentExecutionFilePath + );
        }

        Repeater1.DataSource =pgds;
        Repeater1.DataBind();
        cmd.Dispose();
        conn.Close();

  }

  protected void tijiao_Click(object sender, EventArgs e)
  {
      try
      {
          conn.Open();
          string sql = "insert into liuyan (lyname,neirong,lytime) values ('" +lyname.Text +"','" +lyneirong.Text + "','" + DateTime.Now + "')";
          SqlCommand cmd = new SqlCommand(sql, conn);
          cmd.ExecuteNonQuery();
          conn.Close();
          this.lyname.Text = "";
          this.lyneirong.Text = "";

          Response.Redirect("onlinely.aspx");
      }
      catch
      {

      }

  }
  protected void quxiao_Click(object sender, EventArgs e)
  {

      this.lyname.Text = "";
      this.lyneirong.Text = "";

  }

  public void xinashi(object sender, EventArgs e)
  {
      conn.Open();
      string sql = "select * from liuyan";
      SqlCommand cmd = new SqlCommand(sql, conn);
      SqlDataAdapter sda = new SqlDataAdapter(cmd);
      DataSet ds = new DataSet();
      sda.Fill(ds);
      Repeater1.DataSource = ds;
      Repeater1.DataBind();
      cmd.Dispose();
      conn.Close();

  }

}