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I read somewhere that I should stop using <%= … %> to render and start using <%: … %>.
Can anyone explain what are differences between <%= … %> and <%: … %>, and what are advantages of using one or another?
Here is the slidedeck I am reading
http://ssmith-presentations.s3.amazonaws.com/ASPNET_TipsTricksTools_April2010.zip
Here are the links you can get more information from
http://haacked.com/archive/2009/11/03/html-encoding-nuggets-aspnetmvc2.aspx
Actually it is a short version of <%=Server.HtmlEncode(string) %>
See this link
http://weblogs.asp.net/scottgu/archive/2010/04/06/new-lt-gt-syntax-for-html-encoding-output-in-asp-net-4-and-asp-net-mvc-2.aspx
It is better practice in order to avoid Javascript attacks etc. So if someone adds a comment to your blog for example which has say an iframe html or javascript in it then it will be rendered exactly as typed and not with the JS or iframe actually working.