Meaning of the various symbols in .aspx page of asp.net -

i have come across different symbols in .aspx page of asp.net

<%#eval(expr) %>  <%#bind(expr) %> <% %>  - specifying c# code in aspx page <%$ %> - specifying sql connection string in <asp:sqldatasource> 

is there underlying logic behind these symbols or syntax have remember blindly? <% %> mean in general ?

please me.

thanks in anticipation

it syntax.

<% %> short <script runat="server"> </script> aka code render blocks.

<%# %> binding expressions (plus above).

<%= %> above + response.write().

<%: %> above + response.write() wrapped in html.encode (new in .net 4.0).

<%$ %> asp.net expression, used bind configuration or resource file data during runtime.