There are some times when you want to obtain the HTML source code from an editable
Iframe, on the server side of the world, and this article gives a very simple example of that.
The ASP.NET form
<%@ Page Language="vb" AutoEventWireup="false"
<form id=frmMain method=post runat="server">
<iframe id=ifrHTML name=ifrHTML runat="server"></iframe>
<asp:Button id=cmdSend runat="server" Text="Send"></asp:Button>
<input type=hidden name=hidValue>
//Set the IFRame to Desing Mode.
ifrHTML.document.designMode = "on";
As you can see from the code above we have the
Iframe, a submit button, and a hidden field.
We will need the hidden field to store the value of the
innerHTML value of the
Iframe in the client side, so we can submit later the hidden field into the server side code.
Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
"document.frmMain.hidValue.value = ifrHTML.document.body.innerHTML;")
Private Sub cmdSubmit_Click(ByVal sender As System.Object,_
ByVal e As System.EventArgs) Handles cmdSubmit.Click
Dim strValue As String
strValue = Request.Form("hidValue")
First we'll take a look at the
Page_Load function. As you can see there's just a simple attribute addition to the
cmdSubmit button. We added the
onClick event, so whenever the user clicks this button, the value of the HTML source within the editable
Iframe, will be stored on the hidden field
cmdSubmit_Click event. Here's where we actually get the HTML source that the
Iframe passed to the hidden field on the client side, and we get it by a simple
Request.Form of the hidden field, and store it into the string variable
That's it, you now have the HTML source code of an editable
Iframe into a string variable on the server.
There are many ways of storing the HTML source code of an
Iframe into the server side, this is just one of them. I hope you find it useful.
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