Ext.NET does not integrate with ASP.NET MVC 4

Question

I created the MVC 4 web application in VS 2012. I downloaded Ext.Net 2 via NuGet. In my view of the /home/index.cshtml file, I'm trying to enter:

@Html.X().ResourceManager() 

At startup, I get the following:

CS1061: "System.Web.Mvc.HtmlHelper" does not contain a definition for "X", and there is no extension method "X" that takes the first argument of the type "System.Web.Mvc.HtmlHelper" (do you have a using directive or a link to assembly?)

Here is my web.config

 <?xml version="1.0" encoding="utf-8"?> <!-- For more information on how to configure your ASP.NET application, please visit http://go.microsoft.com/fwlink/?LinkId=169433 --> <configuration> <configSections> <section name="extnet" type="Ext.Net.GlobalConfig" requirePermission="false" /> </configSections> <connectionStrings> <add name="DefaultConnection" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-MvcApplication3-20121016104640;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-MvcApplication3-20121016104640.mdf" providerName="System.Data.SqlClient" /> </connectionStrings> <appSettings> <add key="webpages:Version" value="2.0.0.0" /> <add key="webpages:Enabled" value="false" /> <add key="PreserveLoginUrl" value="true" /> <add key="ClientValidationEnabled" value="true" /> <add key="UnobtrusiveJavaScriptEnabled" value="true" /> </appSettings> <system.web> <compilation debug="true" targetFramework="4.5" /> <httpRuntime targetFramework="4.5" /> <authentication mode="Forms"> <forms loginUrl="~/Account/Login" timeout="2880" /> </authentication> <pages> <namespaces> <add namespace="System.Web.Helpers" /> <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="System.Web.WebPages" /> </namespaces> <controls> <add tagPrefix="ext" namespace="Ext.Net" assembly="Ext.Net" /> </controls> </pages> <httpHandlers> <add path="*/ext.axd" verb="*" type="Ext.Net.ResourceHandler" validate="false" /> </httpHandlers> <httpModules> <add name="DirectRequestModule" type="Ext.Net.DirectRequestModule, Ext.Net" /> </httpModules> </system.web> <system.webServer> <validation validateIntegratedModeConfiguration="false" /> <handlers> <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" /> <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" /> <remove name="ExtensionlessUrlHandler-Integrated-4.0" /> <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" /> <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" /> <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" /> <add name="DirectRequestHandler" verb="*" path="*/ext.axd" preCondition="integratedMode" type="Ext.Net.ResourceHandler" /> <add name="ExtNetHandler" path="*/ext.axd" verb="*" type="Ext.Net.ResourceHandler" /> </handlers> <modules> <add name="DirectRequestModule" preCondition="managedHandler" type="Ext.Net.DirectRequestModule, Ext.Net" /> </modules> </system.webServer> <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" /> <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.5.7" /> <assemblyIdentity name="Ext.Net.Utilities" publicKeyToken="2c34ac34702a3c23" /> <bindingRedirect oldVersion="0.0.0.0-2.0.0" newVersion="2.0.1" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> </dependentAssembly> </assemblyBinding> </runtime> <extnet theme="Gray" /> </configuration> 

Answer 1

• Add Ext.Net to the assemblies in <system.web>

    <compilation debug="true" targetFramework="4.0"> <assemblies> .... <add assembly="Ext.Net"/> </assemblies> </compilation> 

• Add namespaces to <system.web>

   <pages> <namespaces> .... <add namespace="Ext.Net"/> <add namespace="Ext.Net.MVC"/> </namespaces> </pages> 

• Fix build as in geoffrey.mcgill post

• Add namespaces to web.config in the Views folder (under <system.web.webPages.razor> )

   <pages pageBaseType="System.Web.Mvc.WebViewPage"> <namespaces> .... <add namespace="Ext.Net" /> <add namespace="Ext.Net.MVC" /> </namespaces> </pages> 

• Add the Ext.Net assembly to web.config in the Views folder (in the <system.web> section)

    <pages ....> <controls> .... <add assembly="Ext.Net" namespace="Ext.Net" tagPrefix="ext" /> </controls> </pages> 

Answer 2

Can you confirm that you have added the correct link to Ext.Net.dll in your project?

Edit: I believe your <runtime> node inside <system.webserver> incorrect. It should be the following: each assembly is defined as a separate <assemblyBinding> .

 <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" /> <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.5.7" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="Ext.Net.Utilities" publicKeyToken="2c34ac34702a3c23" /> <bindingRedirect oldVersion="0.0.0.0-2.0.0" newVersion="2.0.1" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> </dependentAssembly> </assemblyBinding> </runtime> 

I believe that there may be a defect in NuGet. We saw other reports that NuGet is adding these assembly configurations to <dependentAssembly> .

If you make the above changes to <runtime> , your project should work.

Answer 3

Pls does not use Nuget to get Ext.Net DLLs. I believe the Ext.Net team is not updating the Ext.Net dll in Nuget ASAP. Because I found Nuget version 2.1.1.11828, it does not have the Ext.Net.Mvc namespace. But the newest version is version 2.1.1.18233, it has an Ext.Net.Mvc namespace ...