在ASP.NET 2.0中直接得到本页面生成的HTML代码

来源：互联网发布：哪个地图数据最详细编辑：程序博客网时间：2024/05/17 07:24

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。

<%@ 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HTML</title>
</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HTML</title>
</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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