Visual Studio displaying errors even if projects build successfully in Razor html

Question

Intellisense not working for any razor html tags. Also showing Red line in all razor html tags (@Html.TexBox, @Html.DropdownList MultiSelect etc)

Three types error are showing in Visual Studio Error Window.

Error #1:

The type arguments for method 'System.Web.Mvc.Html.InputExtensions.TextBoxFor(System.Web.Mvc.HtmlHelper, System.Linq.Expressions.Expression>, System.Collections.Generic.IDictionary)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

Error #2:

One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll?

Error #3:

Error 40 The type arguments for method 'System.Web.Mvc.Html.InputExtensions.HiddenFor(System.Web.Mvc.HtmlHelper, System.Linq.Expressions.Expression>)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

Please see the attached link for more information.

Show us your code. We don't know what you did wrong if you don't show us what you did. — DPac, Oct 01 '15 at 14:20
I've seen Intellisense get out of sync for Razor files. Usually closing and opening VS fixed it. Have you tried that? Also, it seems by default if there's an error in your view, it doesn't fail the build, so you have to manually notice these compilation issues. See my answer [here](http://stackoverflow.com/a/28346348/1139830) for a resolution on that. — mason, Oct 01 '15 at 14:22
Please see the the link [link](http://s10.postimg.org/4h9ukt6y1/error.jpg) [link](http://s24.postimg.org/novf33kid/error.jpg) — Rakin, Oct 01 '15 at 14:22
I generally would restart VS, clean solution and finally rebuild. — Tez Wingfield, Oct 01 '15 at 14:24

score 8 · Accepted Answer · answered Oct 02 '15 at 04:50

8

Problem solved deleted all the contents from the following folder.

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files

Thank you all for your time. :)

answered Oct 02 '15 at 04:50

Rakin

1,271
14
30

No change at all with this. – Don Rolling Oct 12 '17 at 21:52

score 1 · Answer 2 · answered Jun 01 '18 at 05:46

1

You need to have following section in your web.config (Root should be fine)

    <system.web>
        <compilation debug="true" targetFramework="4.6.1">
            <assemblies>
                <add assembly="System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
            </assemblies>
       </compilation>
    </system.web>

Replace System.Web.Helpers version as per your reference.

answered Jun 01 '18 at 05:46

Anil

21
5

I had a similar problem with System.Linq (part of System.Core assembly). Finally after hours of searching, this was the solution that worked. @Anil, much appreciation. – Aron Boyette Feb 24 '19 at 22:05

score 0 · Answer 3 · answered Oct 01 '15 at 14:22

0

That happens to me from time to time, usually rebuilding the project which contains the errors works for me. Did you try that?

Let me know.

answered Oct 01 '15 at 14:22

Felippe Rangel

94
1
4

still problem persist – Rakin Oct 01 '15 at 14:37
Try adding another view, copying the content, and then deleting the old one. – Felippe Rangel Oct 01 '15 at 18:35

score 0 · Answer 4 · answered Oct 01 '15 at 14:29

0

If the close and rebuild doesn't sort it I suspect there is an issue with your project file.

Create a new ASP.net web app and copy your files over. A bit of a pain but it will probably work.

answered Oct 01 '15 at 14:29

CF5

1,123
9
19

cant do it . Working in TFS – Rakin Oct 01 '15 at 14:39
Give it a go and see if it works, if it does you could probably look at the differences between the two project files and manually update the one you have in TFS. Has it always done it? – CF5 Oct 01 '15 at 14:52

Visual Studio displaying errors even if projects build successfully in Razor html

4 Answers4