经常在写ASP.NET 或是看相关技术文章时，会遇上如下一些相似数据绑定符号。今看到了简洁解释，便摘录如下，以备忘。
<% %> is simply short for <script runat="server"> </script> aka code render blocks.
<%# %> are binding expressions (plus the above).
<%= %> is the above + a Response.Write().
<%: %> is the above + a Response.Write() wrapped in Html.Encode (new in .NET 4.0).
<%$ %> is an ASP.NET expression, used to bind configuration or resource file data during runtime.
Refer URL:
http://stackoverflow.com/questions/5833278/meaning-of-the-various-symbols-in-aspx-page-of-asp-net