AndriiChuk,
The content from notepad is "pure text" which doesn't have any format. That's why it doesn't have any <P> tags.
If you do want to convert <br> to <p> tags, you have two options:
2. Hire us to create a customization version (convert <br> to <p> when pasting)
Hope it helps.
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