RSS應用

2011-06-29

摘要:RSS應用

範例RSS URL
http://www.epa.gov.tw/ch/RSS.aspx?type=1 (環保署最新消息)

########################## web網頁 #######################################3
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!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 id="Head1" runat="server">
    <title>RSStoGridview</title>
</head>
<body>
    <form id="form2" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="Url："></asp:Label>
        <asp:TextBox ID="txbUrl" runat="server" Width="300px"></asp:TextBox>
        <asp:Button ID="btnRSS" runat="server" OnClick="btnRSS_Click" Text="RSS" />
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
            BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px"
            CellPadding="4" ForeColor="Black" GridLines="Vertical" ShowHeader="False">
            <RowStyle BackColor="#F7F7DE" />
            <Columns>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# Eval("link") %>' Text='<%# Eval("title") %>'></asp:HyperLink>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
            <FooterStyle BackColor="#CCCC99" />
            <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" />
            <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
            <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
            <AlternatingRowStyle BackColor="White" />
        </asp:GridView>
    </div>
    </form>
</body>
</html>

############################ .cs 程式碼 #########################################
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
using System.Data;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }

    protected void btnRSS_Click(object sender, EventArgs e)
    {
        string url = this.txbUrl.Text;

XmlDocument xmldoc = new XmlDocument();

//由Url載入RSS內容
xmldoc.Load(url);

//選擇內容節點
XmlNodeList nodes = xmldoc.SelectNodes("rss/channel/item");

DataSet ds = new DataSet();

        //將選出來的內容加入DataSet
        foreach (XmlNode node in nodes)
        {
            ds.ReadXml(new XmlNodeReader(node), XmlReadMode.Auto);
        }

        this.GridView1.DataSource = ds.Tables[0];
        this.GridView1.DataBind();
    }

}

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