Hugoware

The product of a web developer with a little too much caffeine

ASP.NET 4.0 New Html.Encode Syntax

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This post should probably be filed under ‘problems that no one will actually need to Google’ but here goes anyways.

Maybe I’m weird, but I tend to write server side blocks and bindings in ASP.NET like so…


<h1><% =this.Model.Title %></h1>
<span><% =this.Model.Posted.ToShortDateString() %></span>
<div><% =this.Model.Content %></div>

All of my equal and pound signs are placed directly next to the content being written — not the actual server code block. No big deal right? Well… maybe not quite the case in the new ASP.NET…

I started using the new ASP.NET 4.0 stuff today… yeah, I wasn’t much of an early adopter this time… the IDE turned me off too much.

Anyways, when I tried the new HTML encoding syntax I got the following message…

Invalid expression term ‘:’

Apparently, few people write their blocks the same as I do… After poking around for a moment I realized that the parser just simply did not like the colon to be anywhere else except for directly by the percent sign. So just remember…

<%: "OK!" %>
<% :"Crash!" %>

Also, if you do this in Visual Web Developer (Express) then you’ll get the message ‘BC30035: Syntax error.’… but it is the same problem…

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Written by hugoware

May 11, 2010 at 8:20 pm

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