In this article I will explain with an example, how to add Tiny MCE Rich TextBox Editor in ASP.Net Web application.
HTML Markup
The following HTML Markup consists of an ASP.Net Multiline TextBox, a Button and a Label.
The TinyMCE plugin has been applied to TextArea element.
Note: The ASP.Net Multiline TextBox is rendered as TextArea element in HTML, hence the TinyMCE plugin has been applied to TextArea element.
<asp:TextBox ID="txtTinyMCE" runat="server" TextMode="MultiLine"></asp:TextBox>
<br />
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="Submit" />
<hr />
<asp:Label ID="lblContent" runat="server"></asp:Label>
<script type="text/javascript" src=""></script>
<script type="text/javascript">
    tinymce.init({ selector: 'textarea', width: 300 });
Displaying the TinyMCE Rich Text Content
When Submit Button is clicked, the contents of the TinyMCE Rich TextBox are displayed in the ASP.Net Label control.
protected void Submit(object sender, EventArgs e)
    lblContent.Text = txtTinyMCE.Text;
Protected Sub Submit(sender As Object, e As System.EventArgs)
    lblContent.Text = txtTinyMCE.Text
End Sub
Using Tiny MCE Rich TextBox in ASP.Net
Exception Handling
Using Tiny MCE Rich TextBox in ASP.Net
The solution for the above exception has been provided in the following article.
Browser Compatibility

The above code has been tested in the following browsers.

Internet Explorer  FireFox  Chrome  Safari  Opera 

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