Code Render Blocks
Code render blocks define inline code or inline expressions that execute when the page is rendered. There are two styles of code render blocks: inline code and inline expressions. Use inline code to define self-contained lines or blocks of code. Use inline expressions as a shortcut for calling the Write method.
A compilation error occurs if you try to include the character sequence %> anywhere inside a code render block. That sequence can only be used to close the code render block. For example, the following code will cause an error:
To work around this error, you can build a string containing the sequence of characters, as in the following code example:
Unlike Active Server Pages (ASP), in ASP.NET it is invalid to declare a function or subroutine within a code render block (between <% and %> tags).