📄 shownews.aspx

📁 asp.net经典案例资料

💻 ASPX

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<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.IO" %>
<html>
  <head>
    <title></title>
    <script language="C#" runat="server" >
    void Page_Load()
    {
      DataSet dataSet = new DataSet();
      if( Cache["newsDataSet"] == null)
      {
        if(!File.Exists(Server.MapPath("news.xml")))
        {
          DataTable dataTable = new DataTable();
          dataTable.Columns.Add(new DataColumn("title", typeof(string)));
          dataTable.Columns.Add(new DataColumn("date", typeof(string)));
          dataTable.Columns.Add(new DataColumn("content", typeof(string)));
          dataSet.Tables.Add(dataTable);
        }
        else
        {
          dataSet.ReadXml(Server.MapPath("news.xml"));
        }
        CacheDependency depend = new CacheDependency(Server.MapPath("news.xml"));
        Cache.Insert("newsDataSet", dataSet, depend);
        Label1.Text = "XML file Data";
      }
      else
      {
        dataSet = (DataSet)Cache["newsDataSet"];
        Label1.Text = "Cache Data";
      }
      grid1.DataSource = dataSet;
      grid1.DataBind();
    }
    void AddNew(object sender, EventArgs e)
    {
      Response.Redirect("addNews.aspx");
    }
    </script>
  </head>

  <body>
  <form id="form1" runat="server">
    <h3><asp:Label id="Label1" runat="server" /></h3>
    <asp:DataGrid id="grid1" runat="server" />
  </form>
  </body>
</html>

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