How to render a page’s HTML?
I’ve been trying to get the Html of a gridview and in the process I found the way to get the Html of an aspx page @ Microsoft .NET Framework Group at Google. I’ve tested the code and now I’m trying to modify it to get the HTML of a gridview. Wish me luck!
<%@ Page Language=”VB” %>
<script runat=”server”>
Protected Overrides Sub Render(ByVal writer As
System.Web.UI.HtmlTextWriter)
Const OUTPUT_FILENAME As String = “renderedpage.html”
Dim renderedOutput As StringBuilder = Nothing
Dim strWriter As IO.StringWriter = Nothing
Dim tWriter As HtmlTextWriter = Nothing
Dim outputStream As IO.FileStream = Nothing
Dim sWriter As IO.StreamWriter = Nothing
Dim filename As String
Dim nextPage As String
Try
‘create a HtmlTextWriter to use for rendering the page
renderedOutput = New StringBuilder
strWriter = New IO.StringWriter(renderedOutput)
tWriter = New HtmlTextWriter(strWriter)
MyBase.Render(tWriter)
’save the rendered output to a file
filename = Server.MapPath(“.”) & “\” & OUTPUT_FILENAME
outputStream = New IO.FileStream(filename, _
IO.FileMode.Create)
sWriter = New IO.StreamWriter(outputStream)
sWriter.Write(renderedOutput.ToString())
sWriter.Flush()
‘ redirect to another page
‘ NOTE: Continuing with the display of this page will result in the
‘ page being rendered a second time which will cause an exception
‘ to be thrown
nextPage = “DisplayMessage.aspx?” & _
”PageHeader=Information” & “&” & _
”Message1=HTML Output Saved To ” & OUTPUT_FILENAME
’Response.Redirect(nextPage)
‘Response.Write(renderedOutput.ToString())
writer.Write(renderedOutput.ToString())
Finally
‘clean up
If (Not IsNothing(outputStream)) Then
outputStream.Close()
End If
If (Not IsNothing(tWriter)) Then
tWriter.Close()
End If
If (Not IsNothing(strWriter)) Then
strWriter.Close()
End If
End Try
End Sub
</script>
<html xmlns=”http://www.w3.org/1999/xhtml” >
<head id=”Head1″ runat=”server”>
<title>Capture Page</title>
</head>
<body>
<form id=”form1″ runat=”server”>
<div>
<asp:dropdownlist id=”DropDownList1″ runat=”server”>
<asp:listitem>red</asp:listitem>
<asp:listitem>blue</asp:listitem>
<asp:listitem>green</asp:listitem>
</asp:dropdownlist></div>
</form>
</body>
</html>
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C# Lovers! dont be disapointed, here’s the code in C# too:-
protected override void Render(System.Web.UI.HtmlTextWriter writer)
{
const string OUTPUT_FILENAME = “renderedpage.html”;
StringBuilder renderedOutput = null;
IO.StringWriter strWriter = null;
HtmlTextWriter tWriter = null;
IO.FileStream outputStream = null;
IO.StreamWriter sWriter = null;
string filename;
string nextPage;
try {
//create a HtmlTextWriter to use for rendering the page
renderedOutput = new StringBuilder();
strWriter = new IO.StringWriter(renderedOutput);
tWriter = new HtmlTextWriter(strWriter);
base.Render(tWriter);
//save the rendered output to a file
filename = Server.MapPath(“.”) + “\\” + OUTPUT_FILENAME;
outputStream = new IO.FileStream(filename, IO.FileMode.Create);
sWriter = new IO.StreamWriter(outputStream);
sWriter.Write(renderedOutput.ToString());
sWriter.Flush();
// redirect to another page
// NOTE: Continuing with the display of this page will result in the
// page being rendered a second time which will cause an Exception
// to be thrown
nextPage = “DisplayMessage.aspx?” + “PageHeader=Information” + “&” + “Message1=HTML Output Saved To ” + OUTPUT_FILENAME;
//Response.Redirect(nextPage)
//Response.Write(renderedOutput.ToString())
writer.Write(renderedOutput.ToString());
}
finally {
//clean up
if (((outputStream != null))) {
outputStream.Close();
}
if (((tWriter != null))) {
tWriter.Close();
}
if (((strWriter != null))) {
strWriter.Close();
}
}
}
