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在ASP.NET 2.0中直接得到本页面生成的HTML代码

2008-09-07 16:58 661 查看

在ASP.NET 2.0中，有时候需要对ASP.NET生成的HTML代码进行处理，或者是保存成静态文件。ASP.NET 提供了直接将请求保存成文件的方法：HttpRequest.SaveAs方法。下面这个方法就是在ASP.NET 2.0中得到ASP.NET生成的HTML代码，同时，生成一个静态文件的方法。

C#

<%@ Page Language="C#" AutoEventWireup="true" %>

DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

  // 计算数据，完全可以从数据看取得
   ICollection CreateDataSource( )

   {

     System.Data.DataTable dt = new System.Data.DataTable();

     System.Data.DataRow dr;

     dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String)));

     dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));

     dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));

     dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));

     dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));

     dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));

    for (int i = 0 ; i < 50 ; i++)

     {

       System.Random rd = new System.Random(Environment.TickCount * i); ;

       dr = dt.NewRow();

       dr[0] = "班级" + i.ToString();

       dr[1] = "【孟子E章】" + i.ToString();

       dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);

       dr[3] = System.Math.Round(rd.NextDouble() * 100, 2);

       dr[4] = System.Math.Round(rd.NextDouble() * 100, 2);

       dr[5] = System.Math.Round(rd.NextDouble() * 100, 2);

       dt.Rows.Add(dr);

     }

     System.Data.DataView dv = new System.Data.DataView(dt);

    return dv;

   }

   protected void Page_Load( object sender, EventArgs e )

   {

    if (!IsPostBack)

     {

       GridView1.DataSource = CreateDataSource();

       GridView1.DataBind();

     }

   }

   protected override void Render( HtmlTextWriter writer )

   {

     System.IO.StringWriter html = new System.IO.StringWriter();

     System.Web.UI.HtmlTextWriter tw = new System.Web.UI.HtmlTextWriter(html);

     base.Render(tw);

     System.IO.StreamWriter sw;

     sw = new System.IO.StreamWriter(Server.MapPath("a.htm"), false, System.Text.Encoding.Default);

     sw.Write(html.ToString());

     sw.Close();

     tw.Close();

     Response.Write(html.ToString());

   }
script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>

  <title>得到ASP.NET生成的HTMLtitle>
head>
<body>

  <form id="Form1" runat="server">

    <asp:GridView ID="GridView1" runat="server" Font-Size="12px" BackColor="#FFFFFF"

       GridLines="Both" CellPadding="4" Width="560">

      <HeaderStyle BackColor="#EDEDED" Height="26px" />

    asp:GridView>

  form>
body>
html>

VB.NET

<%@ Page Language="VB" %>
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

   Function CreateDataSource() As ICollection

     Dim dt As System.Data.DataTable = New System.Data.DataTable

     Dim dr As System.Data.DataRow

     dt.Columns.Add(New System.Data.DataColumn("学生班级", GetType(System.String)))

     dt.Columns.Add(New System.Data.DataColumn("学生姓名", GetType(System.String)))

     dt.Columns.Add(New System.Data.DataColumn("语文", GetType(System.Decimal)))

     dt.Columns.Add(New System.Data.DataColumn("数学", GetType(System.Decimal)))

     dt.Columns.Add(New System.Data.DataColumn("英语", GetType(System.Decimal)))

     dt.Columns.Add(New System.Data.DataColumn("计算机", GetType(System.Decimal)))

     Dim i As Integer = 0

     For i = 0 To 50 - 1

       Dim rd As System.Random = New System.Random(Environment.TickCount * i)

       dr = dt.NewRow

       dr(0) = "班级" + i.ToString

       dr(1) = "【孟子E章】" + i.ToString

       dr(2) = System.Math.Round(rd.NextDouble * 100, 2)

       dr(3) = System.Math.Round(rd.NextDouble * 100, 2)

       dr(4) = System.Math.Round(rd.NextDouble * 100, 2)

       dr(5) = System.Math.Round(rd.NextDouble * 100, 2)

       dt.Rows.Add(dr)

     Next

     Dim dv As System.Data.DataView = New System.Data.DataView(dt)

     Return dv

   End Function

   Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

     If Not IsPostBack Then

       GridView1.DataSource = CreateDataSource()

       GridView1.DataBind()

     End If

   End Sub

   Protected Overloads Overrides Sub Render(ByVal writer As HtmlTextWriter)

     Dim html As System.IO.StringWriter = New System.IO.StringWriter

     Dim tw As System.Web.UI.HtmlTextWriter = New System.Web.UI.HtmlTextWriter(html)

     MyBase.Render(tw)

     Dim sw As System.IO.StreamWriter

     sw = New System.IO.StreamWriter(Server.MapPath("a.htm"), False, System.Text.Encoding.Default)

     sw.Write(html.ToString)

     sw.Close()

     tw.Close()

     Response.Write(html.ToString)

   End sub
script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>

  <title>得到ASP.NET生成的HTMLtitle>
head>
<body>

  <form id="Form1" runat="server">

    <asp:GridView ID="GridView1" runat="server" Font-Size="12px" BackColor="#FFFFFF"

       GridLines="Both" CellPadding="4" Width="560">

      <HeaderStyle BackColor="#EDEDED" Height="26px" />

    asp:GridView>

  form>
body>
html

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