C# - How can we show Markup Language (HTML, XML, XSD, ... ) codes in blogger ?

Well, we need to encode ampersands and angle brackets:
< to &lt;
> to &gt;
& to &amp;

I use a great tool in the following url:
http://centricle.com/tools/html-entities/
Encode / Decode HTML Entities
Convert text to HTML entities (and vice-versa)

C# - How can we show Markup Language (HTML, XML, XSD, ... ) codes in blogger ?