What is difference between these tags <% <%: <%= in ASP.NET MVC 2?

The tit开发者_运维技巧le contain my whole question.

<% /* Is a codeblock */ for(int i = 0;i<5;i++) { } %>
<%= "Writes something to the output stream" /* Response.Write */ %>
<%: "HTML-encodes this <b>hello</b> to the output stream" %>

For a good explanation about the <%, <%= and <%# syntax and their usage, please read this article.

The <%: syntax is new in .Net 4 and is used for encoding HTML output. See this article of ScottGu for more information about that.

<% %> is used just to execute server side code
ex. <% if(oject){...} %>

<%= %> is used execute server side code and return value
ex. <%=Html.Encode(Item["Name"]) %>

<%: %> is used execute server side code but it will return Html Encoded string
ex. <%Item["Name"] %>

Source : What is difference between these tags <%, <%: , and <%= in ASP.NET MVC 2?