System.Web.Mvc v5.2.4.0

[Shafi]

Hi!

I'm getting all red squigglies on my CSHTML files but the site is still working without compile-time or runtime errors. I'm getting this warning on CSHTML that has Kendo() used on them:

Warning CS1702

Assuming assembly reference 'System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' used by 'Kendo.Mvc' matches identity 'System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' of 'System.Web.Mvc', you may need to supply runtime policy

Also, maybe not related, but all kendo control is not rendering properly at all: Attached

Here is my Web.Config:

<?xml version="1.0" encoding="utf-8"?>

<configuration>

    <configSections>
        <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
    </configSections>

    <appSettings>
        <add key="webpages:Version" value="3.0.0.0" />
        <add key="webpages:Enabled" value="false" />
        <add key="ClientValidationEnabled" value="true" />
        <add key="UnobtrusiveJavaScriptEnabled" value="true" />
    </appSettings>

    <system.web>
        <authentication mode="Windows" />
        <authorization>
            <deny users="?" />
        </authorization>
        <compilation debug="true" targetFramework="4.7.1">
            <assemblies>
                <add assembly="netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51" />
            </assemblies>
        </compilation>
        <httpRuntime requestValidationMode="4.7.1" targetFramework="4.7.1" encoderType="System.Web.Security.AntiXss.AntiXssEncoder, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
        <globalization uiCulture="auto:en" culture="en-GB" />
        <pages>
            <namespaces>
                <add namespace="Kendo.Mvc.UI" />
            </namespaces>
        </pages>
    </system.web>

    <system.web.extensions>
        <scripting>
            <webServices>
                <jsonSerialization maxJsonLength="2147483644" />
            </webServices>
        </scripting>
    </system.web.extensions>

    <system.webServer>
        <staticContent>
            <remove fileExtension=".woff" />
            <remove fileExtension=".woff2" />
            <remove fileExtension=".otf" />
            <mimeMap fileExtension=".woff" mimeType="application/x-font-woff" />
            <mimeMap fileExtension=".woff2" mimeType="font/woff2" />
            <mimeMap fileExtension=".otf" mimeType="font/otf" />
        </staticContent>
        <modules>
            <remove name="FormsAuthentication" />
        </modules>
        <httpProtocol>
            <customHeaders>
                <add name="Node" value="Local" />
            </customHeaders>
        </httpProtocol>
    </system.webServer>

    <runtime>
        <gcServer enabled="true" />
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral" />
                <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
                <bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="11.0.0.0" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="AutoMapper" publicKeyToken="be96cd2c38ef1005" culture="neutral" />
                <bindingRedirect oldVersion="0.0.0.0-6.2.2.0" newVersion="6.2.2.0" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="0.0.0.0-5.2.4.0" newVersion="5.2.4.0" />
            </dependentAssembly>
        </assemblyBinding>
    </runtime>

</configuration>

 

And here is the Views\Web.Config

<?xml version="1.0"?>

<configuration>

    <configSections>
        <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
            <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
            <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
        </sectionGroup>
    </configSections>

    <system.web.webPages.razor>
        <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <pages pageBaseType="System.Web.Mvc.WebViewPage">
            <namespaces>
                <add namespace="System.Web.Mvc" />
                <add namespace="System.Web.Mvc.Ajax" />
                <add namespace="System.Web.Mvc.Html" />
                <add namespace="System.Web.Optimization"/>
                <add namespace="System.Web.Routing" />
                <add namespace="DA.Services.IBS.Web.FinancePortalFull" />
                <add namespace="Kendo.Mvc.UI" />
            </namespaces>
        </pages>
    </system.web.webPages.razor>

    <appSettings>
        <add key="webpages:Enabled" value="false" />
    </appSettings>

    <system.webServer>
        <handlers>
            <remove name="BlockViewHandler"/>
            <add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />
        </handlers>
    </system.webServer>

    <system.web>
        <compilation>
            <assemblies>
                <add assembly="System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
            </assemblies>
        </compilation>
    </system.web>

</configuration>

 

I'm not using v5.2.3.0 of System.Web.Mvc. I'm on Kendo v2018.1.117.545

_Layout.s

@using DA.Services.IBS.Web.FinancePortalFull.Helpers

<!DOCTYPE html>

<html prefix="og: http://ogp.me/ns#">
    <head>
        <title>@ViewBag.Title | Finance System</title>
        <link href="~/favicon.ico" rel="shortcut icon" type="image/x-icon" />

        <meta charset="utf-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">

        <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300,600,700' rel='stylesheet' type='text/css'>

        <!-- Add local styles, mostly for plugins css file -->
        @if (IsSectionDefined("Styles"))
        {
            @RenderSection("Styles", required: false)
        }

        <!-- Add jQuery Style direct - used for jQGrid plugin -->
        <link href="@Url.Content("~/Scripts/plugins/jquery-ui/jquery-ui.min.css")" rel="stylesheet" type="text/css" />

        <!-- Primary Inspinia style -->
        @Styles.Render("~/Content/css")
        @Styles.Render("~/Content/plugins/kendo/css")
        @Styles.Render("~/Content/plugins/font-awesome/css")

        <!-- Section for main scripts render -->
        @Scripts.Render("~/bundles/jquery")
        @Scripts.Render("~/bundles/bootstrap")
        @Scripts.Render("~/bundles/kendo")

    </head>

    <body class="md-skin">
        <!-- Wrapper-->
        <!-- PageClass give you ability to specify custom style for specific view based on action -->
        <div id="wrapper" class="@Html.PageClass()">

            <!-- Navigation -->
            @Html.Partial("_Navigation")

            <!-- Page wraper -->
            <div id="page-wrapper" class="gray-bg @ViewBag.SpecialClass">

                <!-- Top Navbar -->
                @Html.Partial("_TopNavbar")
                @Html.Partial("_NotificationBox")
                <!-- Main view  -->
                @RenderBody()

                <!-- Footer -->
                @Html.Partial("_Footer")

            </div>
            <!-- End page wrapper-->

            @{
                <input id="BASE_URL" type="hidden" value="@(string.Format("{0}://{1}{2}", Request.Url.Scheme, Request.Url.Authority, Url.Content("~/")))" />
            }

            <script type="text/javascript">
                window.applicationBaseUrl = @Html.Raw(HttpUtility.JavaScriptStringEncode(new Uri(new Uri(Context.Request.Url.GetLeftPart(UriPartial.Authority)), Url.Content("~/")).ToString(), true));
                window.BASE_URL = $("#BASE_URL").val();
            </script>

        </div>
        <!-- End wrapper-->

        <!-- Section for main scripts render -->
        @Scripts.Render("~/plugins/slimScroll")
        @Scripts.Render("~/bundles/inspinia")

        <!-- Handler for local scripts -->
        @RenderSection("scripts", required: false)
    </body>

</html>

 

Bundles:

// Kendo UI Scripts
bundles.Add(new ScriptBundle("~/bundles/kendo").Include(
                "~/Scripts/plugins/kendo/kendo.all.min.js",
                "~/Scripts/plugins/kendo/kendo.aspnetmvc.min.js"));

// CSS style (kendo)
bundles.Add(new StyleBundle("~/Content/plugins/kendo/css").Include(
                "~/Content/plugins/kendo/kendo.common-material.min.css",
                "~/Content/plugins/kendo/kendo.material.min.css",
                "~/Content/plugins/kendo/kendo.dataviz.material.min.css",
                "~/Content/plugins/kendo/kendo.mobile.all.min.css",
                "~/Content/plugins/kendo/kendo.mobile.material.min.css",
                "~/Content/plugins/kendo/kendo.material-mobile.min.css"));

 

As per chrome's Network tab in dev-mode, there is no missing file and no errors on the console tab either.

[Neli]

Hi Shafi,

Usually such error appears when the assembly you have referenced in the project has different version than what you have in web.config. 
Below you will find links to StackOverflow where such MVC exeption has been discussed. I hope that the suggestions in the links will help:

- https://stackoverflow.com/questions/29093832/add-assembly-system-web-mvc-version-4-0-0-0-culture-neutral-publickeytoken

- https://stackoverflow.com/questions/30664140/how-to-resolve-assuming-assembly-reference-system-web-mvc/30664141

Regards,
Neli
Progress Telerik

[Shafi]

I noticed that if I update these packages, I start getting issues with the latest Kendo:

Microsoft.AspNet. v5.2.4
Microsoft.AspNet. Razor v3.2.4
Microsoft.AspNet. WebPages v3.2.4

I'm on these versions and everything started working normally:

Microsoft.AspNet. v5.2.3
Microsoft.AspNet. Razor v3.2.3
Microsoft.AspNet. WebPages v3.2.3

[Neli]

Hello Shafi,

Thank you for the additional information.
I have updated the mentioned packages in several projects, but I did not manage to reproduce the described problem.

If you have updated an existing project to the latest Kendo version, please make sure you have followed the steps described in the linked article. 

Regards,
Neli
Progress Telerik

[Heiko]

Same problem here. No, this is definitely not a problem of referencing a wrong assembly but occured after I updated to the latest MVC and Razor packages (5.2.4/3.2.4) from Microsoft via nuget. I get all those nice warnings, too, but my WebApp is running without any problems. Checked with the latest update of Kendo.Mvc (2018.1.221.545)

[Daniel]

I have the same problem.

 

Kendo.Mvc: 2018.1.131.545

Microsoft.AspNet.Razor: 3.2.4

Microsoft.AspNet.WebPages: 3.2.4

 

Severity: Warning
Code: CS1702
Description: Assuming assembly reference 'System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' used by 'Kendo.Mvc' matches identity 'System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' of 'System.Web.Mvc', you may need to supply runtime policy
Detail Description: The two assemblies differ in release and/or version number. For unification to occur, you must specify directives in the application's .config file, and you must provide the correct strong name of an assembly.

 

web.config has bindings setup but this does not remove the warnings.

<configuration>
    <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="0.0.0.0-5.2.4.0" newVersion="5.2.4.0" />
            </dependentAssembly>
        </assemblyBinding>
    </runtime>
</configuration>

[Daniel]

I just upgraded to 2018.1.221 via NuGet and the warnings are still displayed.

[Scott]

I agree with the previous posts.

It happens when one upgrades to the latest MVC and Razor packages (5.2.4/3.2.4) from Microsoft via nuget.

Plus, Kendo 2018.1.221 still has the issue.

** The fix is for brand new Kendo dll's that support the latest MVC and Razor to be built and made available.**

Please expedite this.

[Neli]

Hello,

We are still not able to reproduce the described problem. We did the following steps with VS 2017:

1. Create an ASP.NET MVC application - System.Web.Mvc is Version=5.2.3.0 in it.
2. Add to the project an older Telerik UI for ASP.NET MVC 5 Trial - version 2017.3.913 through NuGet.
3. Update System.Web.Mvc to 5.2.4.0 through NuGet.
4. Rebuild the project both in Debug and Release modes - No warnings.
5. Update Telerik UI for ASP.NET MVC 5 Trial to latest version 2018.1.221 through NuGet.
6. Rebuild the project both in Debug and Release modes - No warnings.

It would be helpful if you specify the following details, in order to reproduce the issue on our side:

1. Visual Studio version used
2. Older Telerik UI for ASP.NET MVC version used prior the update
3. Is the issue reproducible on your side following the steps described above?
4. If the answer to point 3 is no, then is the issue reproducible by changing some of the steps or adding other steps?

If still the issue is not reproducible, we will appreciate if you could send us a sample project where we could reproduce the issue and inspect its configuration.

Regards,
Neli
Progress Telerik

[Daniel]

I was able to reproduce with a new project.  With VS 2017 15.5.7

1. New Project (.Net Framework 4.7.1) C# ASP.NET Web Application (.NET Framework)
2. Select MVC Template with defaults
3. Upgrade from Microsoft.AspNet.Mvc.5.2.3 to  Microsoft.AspNet.Mvc 5.2.4 using the NuGet UI (this also upgrades Microsoft.AspNet.Razor.3.2.3 to Microsoft.AspNet.Razor 3.2.4 and Microsoft.AspNet.WebPages.3.2.3 to Microsoft.AspNet.WebPages 3.2.4)
4. Install Telerik.UI.for.AspNet.Mvc5 2018.1.221 from NuGet UI
5. Open \Views\Home\Index.cshtml in the VS editor and type @(Html.Kendo()) at the bottom

After step 5 the following appears in the "Error List" tab:

Warning CS1702 Assuming assembly reference 'System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' used by 'Kendo.Mvc' matches identity 'System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' of 'System.Web.Mvc', you may need to supply runtime policy ...\Views\Home\Index.cshtml 33 Active

[Daniel]

It's worth noting this is not showing as a build warning for me (it might if you have razor view compilation turned on).  This warning only shows for me if I have the razor (.cshtml) file open in the VS editor and goes away when I close the file.

[Scott]

The warnings are coming from the Kendo DLLs and they are looking for assembly reference 'System.Web.Mvc, Version=5.2.3.0".

I downloaded the latest Kendo MVC source from your site and it's not using the latest MVC or Razor based upon the packages folder.

Are you not using DLLs  in the packages folder? If you are, then that's the problem.

[Scott]

Also, adding this to web.config, does seem to suppress the warning for me, even when opening views.

<system.codedom>
        <compilers>
            <compiler language="c#;cs;csharp" extension=".cs" compilerOptions="/nowarn:1702" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">
                <providerOption name="CompilerVersion" value="v4.0" />
                <providerOption name="WarnAsError" value="false" />
            </compiler>
        </compilers>
    </system.codedom>

[Scott]

Also, adding this to web.config suppresses the warnings, even for views.

Under system.codedom / compilers / compiler, add compilerOptions="/nowarn:1702"

[Heiko]

The BUILD is without any problems. Now enter this small piece of code in a razor page @(Html.Kendo().DatePickerFor(model => model.Birthday). Then I am pretty sure you can see the little red line and the warning as a tooltip. Come on, everyone got this warning message... what Daniel wrote is exactly the behaviour.

[Scott]

To be clear, I am saying the Kendo DLL build is the problem, not developer builds.

I pulled down the latest source today. If I open up the project file named Kendo.Mvc.csproj and look at line 234, this is what I see:

    <Reference Include="System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <Private>True</Private>
      <HintPath>..\packages\Microsoft.AspNet.Mvc.5.2.3\lib\net45\System.Web.Mvc.dll</HintPath>
    </Reference>

To me, this is the problem.

[Neli]

Hello,

Thank you all for providing additional information and steps for reproducing the issue.
I have logged an enhancement issue in our official GitHub repository. Here you will find a link to the issue, where you can track our progress on resolving it. 

Regards,
Neli
Progress Telerik

[abhinav]

Is there any targeted date by when we will have a solution for this issue ?

[Neli]

Hi,

The issue is considered with highest priority. As you can see in the GitHub, the labels have been changed, so currently the priority tag is 'Priority 5'. There is a developer assigned to the issue and a milestone is set to the next sprint. After all tests are successfully passed the fix will be included in an internal build. 

Regards,
Neli
Progress Telerik

[Vance Smith]

Hi, this is still a problem. Anything??

[Neli]

Hi Vance,

We are currently working on the fix of the issue. As I have previously mentioned, there is developer assigned to the issue. The enhancement is included in our backlog for the current sprint. In the GitHub repo you could check the targeted deadline. 

Regards,
Neli
Progress Telerik

[Morten]

Hi Neli,

any update on this issue. I just noticed today that I'm having the same issue.

SeverityCodeDescriptionProjectFileLineSuppression State
WarningCS1702Assuming assembly reference 'System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' used by 'Kendo.Mvc' matches identity 'System.Web.Mvc, Version=5.2.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' of 'System.Web.Mvc', you may need to supply runtime policy

My setup:

VS2017 15.7.3

web.config:

<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>

      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.6.0" newVersion="5.2.6.0" />
      </dependentAssembly>

Kendo.Mvc.dll v2018.1.503.545

Regards

Morten

 

[Scott]

They fixed it for 5.2.4 but they took so long that Microsoft released another version so now Kendo MVC is behind again. That's what happens when Telerik waits until one of their normal releases to get a fix out there.

As I posted earlier, adding this to web.config suppresses the warnings, even for views.
Under system.codedom / compilers / compiler, add compilerOptions="/nowarn:1702"

[Morten]

I upgraded to kendoui.for.jquery.2018.2.613 and kendoui.for.jquery.2018.2.613.commercial and the warnings went away

[Morten]

I upgraded to kendoui.for.jquery.2018.2.613 and kendoui.for.jquery.2018.2.613.commercial and the warnings went away

[Scott]

That's good news. I will upgrade from 2018.2.515 to 2018.2.613.

[Ivan Danchev]

Hi,

2018.2.613 is currently the latest internal build version. A new official Kendo UI version will become available with the Service Pack release due before the end of the month.
The issue with System.Web.Mvc versions not matching was covered in the troubleshooting section of the documentation.

Regards,
Ivan Danchev
Progress Telerik

[john]

I'm using VS2017, and Telerik UI for MVC v2019.1.115.545 (downloaded on 2019.02.16).

I create created a new MVC5 project, and immediately ran "Update-package" in the nuget console. This updated all of the packages in the project, including MVC to 5.2.7.0, jQuery to 3.3.1, and Bootstrap to 4.2.1.

I then added the Kendo.MVC assembly to my project..

In my app, I added a ComboBox (using an example I found on this web site), and I'm getting this warning. Besides that, the combo box is not being rendered correctly. There is no drop-down arrow, nor items in the dropdown list. Is this because of Kendo's conflicts with bootstrap, compounded by my use of bootstrap 4?

------------------------------

I read this entire thread, and from a developer's point of view, disabling the warning is NOT fixing the problem. It's merely hiding it.

I really don't want to do these controls client-side, but ill using the jquery version fix this problem until y'all figure out how to fix this?

[Ivan Danchev]

Hello John,

Could you post the text of the warning message you are getting as well as the content of your _Layout file, or only the part in it where Bootstrap, jQuery and Kendo UI js and style files are loaded. This will give us an idea of the order the files are loaded in.

Regards,
Ivan Danchev
Progress Telerik

[Jay]

I spent an evening in the muck with this rocket science.

I solved it by going here: https://www.nuget.org/packages/Microsoft.AspNet.Mvc/5.2.6.

Run the following in the Package Console: Install-Package Microsoft.AspNet.Mvc -Version 5.2.6

You must do this for ALL projects in your solution.

It would be very, very nice if the worthless installation program would report this problem and a link to information about its fix.