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在ASP.NET 2.0中直接得到本页面生成的HTML代码

2007-07-29 11:46 579 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">

// 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>

<head>

<title>得到ASP.NET生成的HTML</title>

</head>

<body>

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

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

</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">

Function CreateDataSource()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)

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

Return dv

End Function

Protected Sub Page_Load()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()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>

<head>

<title>得到ASP.NET生成的HTML</title>

</head>

<body>

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

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

</asp:GridView>

</form>

</body>

</html

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