>>3. Are there special function using submit button, radion button, drop down box ?
 For example, select radio button and submit button click then How can I make event or fucntion in selected result?

 

You have to input the Javascript event in the source view.

 

>>5. finally I wonder your sales policy.
    How can I buy Cute Editor for.NET component?
    I want to know price, how to upgrade and menual.
    Actually, I interested in developer guide or documentation.

Developers' guide:

http://cutesoft.net/developer+guide/index.html

Class reference:

http://cutesoft.net/doc/index.html

License info:

http://cutesoft.net/How+to+Buy/Licensing+Info/default.aspx

Purchase:

http://cutesoft.net/ASP.NET+WYSIWYG+Editor/Purchase+CuteEditor+for+.NET/default.aspx