Html.Raw is null

Question

I'm in trouble here. In my view i have the following code:

@if (!string.IsNullOrEmpty(alert)) { 
    <div class="alert">@Html.Raw(alert)</div>
}

But an exception of type NullReferenceException is being thrown saying that the Html property is null. How i can solve this?

OBS: My view page inherits from a class that by their turn inherits from System.Web.WebPages.WebPage

// WEBCONFIG

<system.web>
<compilation debug="true" targetFramework="4.0">
  <assemblies>
    <add assembly="Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add assembly="System.Web.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add assembly="System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add assembly="System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add assembly="System.Web.WebPages.Deployment, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
  </assemblies>
</compilation>
<httpRuntime targetFramework="4.0"/>

What version of MVC are you using? The `Raw` method was added in MVC 3. — Guffa, Apr 03 '13 at 13:20
@Guffa I've updated the post with the assembly section of the web config. Is it right? — mnatan.brito, Apr 03 '13 at 13:27
Do the assembly references in your main web.config and the web.config in your Views folder differ? — Tim B James, Apr 03 '13 at 14:03
@mnatan.brito: I don't think that's even from the right `web.config`, I think that there should be a `System.Web.Mvc` in there, which should show what version you are using. See http://stackoverflow.com/questions/4930217/which-version-of-mvc-am-i-using — Guffa, Apr 03 '13 at 14:56
My project is a website project. There is some issue with this? — mnatan.brito, Apr 03 '13 at 16:23

score 5 · Answer 1 · answered Apr 03 '13 at 17:55

5

I didn't get the solution, so i changed the code to:

@if (!string.IsNullOrEmpty(alert)) {    
    <div class="alert">@(new HtmlString(alert))</div>
}

Razor doesn't encode HtmlString. So it worked fine.

answered Apr 03 '13 at 17:55

mnatan.brito

883
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Html.Raw is null

1 Answers1