ASP.NET TargetFramework屬性不被識別

我一直在嘗試做一個項目，但是在web.config中，它一直給我錯誤，認爲它不能識別屬性TargetFramework。ASP.NET TargetFramework屬性不被識別

編輯：添加了web.config。我看到了一個問題，他們說那個問題應該與ASP.NET版本相同。但我真的不知道該怎麼做。

P.S.我不能更改爲不同版本的Visual Studio（我使用該程序），因爲它不會允許我在本地Web上運行文件。但這是一個不同的問題。

已經有一段時間了。猜猜這是一個棘手的問題。

<?xml version="1.0"?> 
<!-- 
Note: As an alternative to hand editing this file you can use the 
web admin tool to configure settings for your application. Use 
the Website->Asp.Net Configuration option in Visual Studio. 
A full list of settings and comments can be found in 
machine.config.comments usually located in 
\Windows\Microsoft.Net\Framework\v2.x\Config 
--> 
<configuration> 
<appSettings/> 
<connectionStrings/> 
<system.web> 
    <!-- 
     Set compilation debug="true" to insert debugging 
     symbols into the compiled page. Because this 
     affects performance, set this value to true only 
     during development. 
    --> 
    <compilation debug="true" targetFramework="4.0"> 
     <assemblies> 



      </assemblies> 
    </compilation> 
    <!-- 
     The <authentication> section enables configuration 
     of the security authentication mode used by 
     ASP.NET to identify an incoming user. 
    --> 
    <authentication mode="Windows"/> 
    <!-- 
     The <customErrors> section enables configuration 
     of what to do if/when an unhandled error occurs 
     during the execution of a request. Specifically, 
     it enables developers to configure html error pages 
     to be displayed in place of a error stack trace. 

    <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm"> 
     <error statusCode="403" redirect="NoAccess.htm" /> 
     <error statusCode="404" redirect="FileNotFound.htm" /> 
    </customErrors> 
    --> 
    <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/>  </system.web> 
<system.codedom> 
</system.codedom> 
<!-- 
    The system.webServer section is required for running ASP.NET AJAX under Internet 
    Information Services 7.0. It is not necessary for previous version of IIS. 
--> 
<system.webServer> 
</system.webServer> 
</configuration>

來源

2014-01-17 user3205643

你可以發佈你的配置文件有這一行的部分？ –

錯誤的asp.net版本 - 您可能使用了一些不屬於您運行的asp.net版本的屬性。 – Aristos