CODEWITHSUNDEEP
asp.net-mvchtmlvisual-studio-2012
Vikram Singh Saini
Vikram Singh Saini

Reputation: 1889

Validation(HTML5): Element 'T' is not supported

I am developing a web application in MVC5.

And I am trying to use model in View as shown in snapshot -

enter image description here

Faced problem for model too. I tried some solutions as (but none fixed it) -

(1) Delete all files of folder at location E:\Users\V.S. Saini\AppData\Roaming\Microsoft\VisualStudio\11.0\ReflectedSchemas based on root drive and the Visual Studio version installed.

Since I am using VS 2012, so the path is.

(2) There was a solution suggesting upgrade of razor version from 2.0 to 3.0 in web.config in Views. But not worked.

Could you please help me to fix this issue?

Upvotes: 2

Views: 4418

Answers (3)

Abdul Razique
Abdul Razique

Reputation: 39

First of all you need to know it's not an error!

Steps to resolve the warning message for an element.

  1. Right click the warning area, you will see a context menu.
  2. Click "Formatting and Validation..." basically it's at the bottom of the menu.
  3. Go to "Validation" in "HTML or HTML (Web Forms)" section. You'll see a checkbox with "Show errors" is checked to true with header "Options". Just unchecke it.

enter image description here enter image description here

That's it, you are done...

Upvotes: 0

Vikram Singh Saini
Vikram Singh Saini

Reputation: 1889

Well! It was daunting task to fix this issue.

First of all this mess was created due to updating different MVC related references (v4 to v5) from Nuget Package Manager in VS 2012.

Steps as solution

(1) The first and utmost task is to cross-check your existing web.config (both in root and Views folder) as per the link How to Upgrade an ASP.NET MVC 4 and Web API Project to ASP.NET MVC 5 and Web API 2.

(2) Then downloaded the update at link ASP.NET and Web Tools 2013.1 for Visual Studio 2012. Close all Visual Studio instances and then run this update.

(3) Open Visual Studio and re-build MVC solution.

Wow! The squiggy error line got removed and VS started recognizing razor keywords. :)

Upvotes: 3

Steven V
Steven V

Reputation: 16595

I'm thinking it's Visual Studio isn't picking up that @model is a special Razor keyword. The entire @model is normally highlighted yellow. And then List shouldn't be black to match the text color, it should be the color for classes.

screenshot of visual studio highlighting

Have you tried running Visual Studio in safe mode to see if a plugin or extension is causing this issue? As you stated in your comment, it probably isn't harming anything, but it probably is annoying.

Upvotes: 1

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