Rut,
Most of developers use it as a regular textbox replacement. The data is loaded from DB and after users submit the form, the data will be saved back to the database.
If you want to use it edit aspx and ascx file, it's also possible.
Just make sure you set the following property to true.
Editor.AllowEditServerSideCode Property
By default Cute Editor doesn't allow edit the Server side code. When this property is set to true, Cute Editor will allow edit the Server side code. (<%@ Page Language="C#" %> <%=MyString %> <asp:textbox id="textbox1" runat="server"></asp:textbox>)
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx