Will HTML Encoding prevent all kinds of XSS attacks?

<input value=<%= HtmlEncode(somevar) %> id=textbox>

a onclick=alert(document.cookie)

<input value=a onclick=alert(document.cookie) id=textbox>

+ADw-script+AD4-alert(document.cookie)+ADw-/script+AD4-

# Markup example
[foo](javascript:alert('bar');)

<script/>