I have seen the following tag as an answer to a question:
<%: Model.FirstName %>
what does ” <%: ” do?
Answers:
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Method 1
It html encodes the output of Firstname, this prevents encoding attacks like cross-side scripting (XSS).
Html encoded:
<%: Model.FirstName %>
Normal output:
<%= Model.FirstName %>
More info can by found at this blog post:
New <%: %> Syntax for HTML Encoding Output in ASP.NET 4 (and ASP.NET MVC 2)
Method 2
There is some useful information for this: 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
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