ASP.Net MVC3安全升級致使程序集從3.0.0.0變爲3.0.0.1

一直以來，開發MVC3應用，在部署的時候爲了方便，並不在用戶環境安裝MVC3，只是把用到的幾個assembly直接部署到bin裏，包括：

• Microsoft.Web.Infrastructure.dll

• System.Web.Helpers.dll

• System.Web.MVC.dll

• System.Web.WebPages.Deployment.dll

• System.Web.WebPages.dll

• System.Web.WebPages.Razor.dll

最近系統升級，再這麼部署網站時，發現很差用了，報錯：

Compiler Error Message: CS1705: Assembly 'TestUnsafe, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' uses 'System.Web.Mvc, Version=3.0.0.1, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'

發現沒？System.Web.MVC的版本要求是3.0.0.1，而bin裏放的仍然是3.0.0.0，確定跑不起來。OK，換個新的程序集上去，把System.Web.MVC.dll 3.0.0.1版放上去，仍然跑不起來，報錯：

Parser Error Message: Could not load file or assembly 'System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

這是因爲Web.config未更新致使的，找到下面的幾行：

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>

調整oldVersion和newVersion，改爲：

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.1" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>

看到沒？把舊版本的MVC統一映射到3.0.0.1版去。再訪問站點，一切正常了。