UpdatePanel - TinyMCE Demo with project zip-file

TinyMCE is a nice HTML-Editor which has become very popular. It's easy to use and has a lot of configuration possibillities. But when it come to combining it to Ajax and partial updates - it can be a nightmare...

I have now done a proper test and will provide the source code for anybody who is interested, free of use in any way. I've tested this code successfully in IE7, FF2 and Opera.

But now let the source speak for it self, don't miss out on the complete project download at the bottom.


<%@ Page Language="C#" ValidateRequest="false" Trace="false" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>MS Ajax UpdatePanel - TinyMCE</title>
<script type="text/javascript">
function SaveMyPreciousValues()
TextBox1 = document.getElementById('TextBox1');
alert('Check value when posting: '+ TextBox1.value)

<form id="form1" runat="server">
<asp:ScriptManager ID="sm" EnablePartialRendering="true" runat="server">

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<asp:Label ID="Label1" runat="server" Text="Welcome to the MS Ajax UpdatePanel - TinyMCE Demo, Enjoy!"></asp:Label>
<asp:TextBox ID="TextBox1" Rows="10" Columns="50" TextMode="MultiLine" EnableViewState="false" Text="Write something here..." runat="server"></asp:TextBox>

<asp:Button ID="Button1" runat="server" OnClick="Button1_OnClick" OnClientClick="SaveMyPreciousValues();" Text="Hit me" />



using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
protected void Page_Load(object sender, EventArgs e)

private void LoadTinyMCE()

//Load tinyMCE
HtmlGenericControl Include = new HtmlGenericControl("script");
Include.Attributes.Add("type", "text/javascript");
Include.Attributes.Add("src", "js/tiny_mce/tiny_mce.js");

//Config MCE
HtmlGenericControl Include2 = new HtmlGenericControl("script");
Include2.Attributes.Add("type", "text/javascript");
Include2.InnerHtml = "tinyMCE.init({mode : 'textareas' ,language : 'sv',entity_encoding : 'raw'});";


protected void Button1_OnClick(object sender, EventArgs e)

//Get the contect of the TextBox
string inputText = Request.Form["TextBox1"];

//Print all Form-values when testing
/*for (int i = 0; i<Request.Form.Count;i++ )
string itemName = Request.Form.AllKeys[i];
string itemValue = Request.Form.GetValues(i)[0];
Label1.Text = Label1.Text + "<br />" + itemName + ":" + itemValue;

Label1.Text = "Content posted from TextBox1: " + inputText;

//Register some javascript to redraw the editor.
//Very important to reset the id-counter to "0", or else strange things will happen..
ScriptManager.RegisterClientScriptBlock(UpdatePanel1, this.GetType(), "init", "tinyMCE.idCounter=0;tinyMCE.execCommand('mceAddControl', false, 'TextBox1');", true);

zip-icon UpdatePanelTinyMCE.zip (C#)

Update: Joakim has rewritten the example to VB.NET, read more on his blog.

By Jesper Lind