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ASP.NET:How to upgrade an MVC project from MVC2 to MVC3


Upgrading an ASP.NET MVC 2 Project to ASP.NET MVC 3 Tools Update:
                                                                       ASP.NET MVC 3 can be installed side by side with ASP.NET MVC 2 on the same computer, which gives you flexibility in choosing when to upgrade an ASP.NET MVC 2 application to ASP.NET MVC 3.
To manually upgrade an existing ASP.NET MVC 2 application to version 3, do the following:
  1. Create a new empty ASP.NET MVC 3 project on your computer. This project will contain some files that are required for the upgrade.
  2. Copy the following files from the ASP.NET MVC 3 project into the corresponding location of your ASP.NET MVC 2 project. You'll need to update any references to the jQuery library to account for the new filename ( jQuery-1.5.1.js):
    • /Views/Web.config
    • /packages.config
    • /scripts/*.js
    • /Content/themes/*.*
  3. Copy the packages folder in the root of the empty ASP.NET MVC 3 project solution into the root of your solution, which is in the directory where the solution’s .sln file is located.
  4. If your ASP.NET MVC 2 project contains any areas, copy the /Views/Web.config file to the Viewsfolder of each area.
  5. In both Web.config files in the ASP.NET MVC 2 project, globally search and replace the ASP.NET MVC version. Find the following:

    System.Web.Mvc, Version=

    Replace it with the following:

    System.Web.Mvc, Version=
  6. In Solution Explorer, delete the reference to System.Web.Mvc (which points to the DLL from version 2), then add a reference to System.Web.Mvc (v3.0.0.0).
  7. Add a reference to System.Web.WebPages.dll and System.Web.Helpers.dll. These assemblies are located in the following folders:
    • %ProgramFiles%\ Microsoft ASP.NET\ASP.NET MVC 3\Assemblies
    • %ProgramFiles%\ Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies
  8. In Solution Explorer, right-click the project name and select Unload Project. Then right-click the project name again and select Edit ProjectName.csproj.
  9. Locate the ProjectTypeGuids element and replace {F85E285D-A4E0-4152-9332-AB1D724D3325} with {E53F8FEA-EAE0-44A6-8774-FFD645390401}.
  10. Save the changes, right-click the project, and then select Reload Project.
  11. In the application’s root Web.config file, add the following settings to the assemblies section.
<add assembly="System.Web.WebPages, Version=, Culture=neutral, 
                   PublicKeyToken=31BF3856AD364E35" />
                   <add assembly="System.Web.Helpers, Version=, Culture=neutral,
                         PublicKeyToken=31BF3856AD364E35" />

   12. If the project references any third-party libraries that are compiled using ASP.NET MVC 2, add the following highlighted bindingRedirect element to the Web.config file in the application root under the configuration section:
                       <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
                         <assemblyIdentity name="System.Web.Mvc"
                          <bindingRedirect oldVersion="" newVersion=""/>

More about ASP.NET MVC 3

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