I've modified your code. Please try it:
<%@ Page Language="C#"%>
<%@ Register TagPrefix="CE" Namespace="CuteEditor" Assembly="CuteEditor" %>
<html>
<head>
</head>
<body>
<form runat="server">
<CE:Editor ID="Editor1" runat="server" Text="Type here..."></CE:Editor>
<br>
<input type="button" value="Click Me" onclick="helloworld()">
<script language="javascript" type="text/javascript">
function helloworld() {
var editor1 = document.getElementById('<%=Editor1.ClientID%>');
var content = editor1.getHTML();
alert(content);
}
</script>
</form>
</body>
</html>
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asp wysiwyg html editor: http://cutesoft.net/ASP
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