同一页面刷新问题

当点击(DataList1)新闻类型的时候,下面的新闻内容(DataList2)发生相应的变化.代码如下:<%@ Page Language="C#" AutoEventWireup="true" CodeFile="NewsType.aspx.cs" Inherits="NewsType" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <br />
        <br />
        <asp:DataList ID="DataList1" runat="server" Height="50px" RepeatDirection="Horizontal" Width="586px" DataKeyField="DF_NEW_TYPE_ID">
            <ItemTemplate>
                
                <a href='<%#"NewsType.aspx?typeid="+DataBinder.Eval(Container,"DataItem.DF_NEW_TYPE_ID") %>'>
                
                <asp:Label ID="Label1" runat="server" Text='<%#DataBinder.Eval(Container,"DataItem.DF_NEW_TYPE_NAME") %>'></asp:Label>
               </a>
            </ItemTemplate>
        </asp:DataList><br />
        &nbsp;<asp:DataList ID="DataList2" runat="server">
            <ItemTemplate>
                <table>
                    <tr>
                        <td style="width: 100px">
                            <asp:Label ID="Label1" runat="server" Text='<%#DataBinder.Eval(Container,"DataItem.DF_NEW_TYPE_NAME") %>'></asp:Label></td>
                        <td style="width: 100px">
                            <a href='<%#"NewInfo.aspx?newid="+DataBinder.Eval(Container,"DataItem.DF_NEW_ID") %>'>
                                <asp:Label ID="Label8" runat="server" Text='<%#DataBinder.Eval(Container,"DataItem.DF_NEW_TITLE") %>'></asp:Label>
                            </a>
                        </td>
                        <td style="width: 100px">
                            <asp:Label ID="Label2" runat="server" Text='<%#DataBinder.Eval(Container,"DataItem.DF_NEW_SOURCE") %>'></asp:Label></td>
                        <td style="width: 100px">
                            <asp:Label ID="Label3" runat="server" Text='<%#DataBinder.Eval(Container,"DataItem.DF_NEW_DATE") %>'></asp:Label></td>
                    </tr>
                </table>
                &nbsp;
            </ItemTemplate>
            <HeaderTemplate>
                <table>
                    <tr>
                        <td style="width: 100px">
                            <asp:Label ID="Label4" runat="server" Text="新闻类型"></asp:Label></td>
                        <td style="width: 100px">
                            <asp:Label ID="Label5" runat="server" Text="新闻标题"></asp:Label></td>
                        <td style="width: 100px">
                            <asp:Label ID="Label6" runat="server" Text="发布时间"></asp:Label></td>
                        <td style="width: 100px">
                            <asp:Label ID="Label7" runat="server" Text="新闻来源"></asp:Label></td>
                    </tr>
                </table>
            </HeaderTemplate>
        </asp:DataList></div>
    </form>
</body>
</html>using System;
using System.Data;
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.SqlClient;public partial class NewsType : System.Web.UI.Page
{
    public void SELECT_DF_NEW_TYPE()
    {
        string str = ConfigurationSettings.AppSettings["sql"].ToString();
        SqlConnection con = new SqlConnection(str);
        con.Open();
        SqlCommand com = new SqlCommand("S_CS_SELECT_NEWS_TYPE", con);
        com.CommandType = CommandType.StoredProcedure;
        SqlDataReader ccc = com.ExecuteReader();
        this.DataList1.DataSource = ccc;
        this.DataList1.DataBind();
        ccc.Close();
    }    public void SELECT_DF_NEWS() //根据新闻类型查找新闻
    {
        //int typeid = int.Parse(Request["typeid"].ToString());
        string str = ConfigurationSettings.AppSettings["sql"].ToString();
        SqlConnection con = new SqlConnection(str);
        con.Open();
        SqlCommand comm = new SqlCommand("S_CS_SELECT_NEWS_FROM_NEW_TYPE", con);
        comm.CommandType = CommandType.StoredProcedure;
        //comm.Parameters.Add("@DF_NEW_TYPE_ID",typeid);
        SqlDataReader cccc = comm.ExecuteReader();
        this.DataList2.DataSource = cccc;
        this.DataList2.DataBind();
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Page.IsPostBack)
        {
            return;
        }
        SELECT_DF_NEW_TYPE();
        SELECT_DF_NEWS();    }
}

解决方案 »

  1.   

    用户asp.net ajax中的updatepanel吧
      

  2.   

        public void SELECT_DF_NEW_TYPE()
        {
            string str = ConfigurationSettings.AppSettings["sql"].ToString();
            SqlConnection con = new SqlConnection(str);
            SqlCommand com = new SqlCommand("S_CS_SELECT_NEWS_TYPE", con);
            com.CommandType = CommandType.StoredProcedure;
            con.Open();
            SqlDataReader ccc = com.ExecuteReader();
            this.DataList1.DataSource = ccc;
            this.DataList1.DataBind();
            ccc.Close();
            con.Close();
        }    public void SELECT_DF_NEWS() //根据新闻类型查找新闻 
        {
            int typeid = int.Parse(Request["typeid"].ToString()); 
            string str = ConfigurationSettings.AppSettings["sql"].ToString();
            SqlConnection con = new SqlConnection(str);
            SqlCommand comm = new SqlCommand("S_CS_SELECT_NEWS_FROM_NEW_TYPE", con);
            comm.CommandType = CommandType.StoredProcedure;
            comm.Parameters.Add("@DF_NEW_TYPE_ID",typeid); 
            con.Open();
            SqlDataReader cccc = comm.ExecuteReader();
            this.DataList2.DataSource = cccc;
            this.DataList2.DataBind();
            con.Close();
        }
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                SELECT_DF_NEW_TYPE();
            }        if (!string.IsNullOrEmpty(Request["typeid"]))
            {
                SELECT_DF_NEWS();
            }
        } 
      

  3.   

    将两个DataList放到UpdatePanel控件里面，其他的没变化
      

  4.   

    用JS调用WEB方法就可以实现了
      

  5.   

    updatepanel没哪么难你网上找找资料看看就会了。用他实现起来方便4楼的也可以