c# - asp.net 页面解析错误

Question

我的 ASP.NET 页面中出现以下错误。解析器错误消息:

The 'targetFramework' attribute in the element of the Web.config file is used only to target version 4.0 and later of the .NET Framework (for example, ''). The 'targetFramework' attribute currently references a version that is later than the installed version of the .NET Framework. Specify a valid target version of the .NET Framework, or install the required version of the .NET Framework.

我已经在电脑上安装了 .NET 版本 4，但它仍然出现上述错误。知道如何解决吗？

Answer 1

如果您在 IIS 上托管网站，请将为您的网站提供服务的应用程序池中的 .net Framework 版本从 X.0 版本更改为 4.0。

如何更改应用程序池上的框架版本:

1 Open IIS Manager.

2 On the Connections pane, expand the server node and click Application Pools.

3 On the Application Pools page, select the application pool for which you want to specify a .NET Framework version, and then click Basic Settings in the Actions pane.

4 In the Edit Application Pool dialog box, in the .NET Framework version list, select the version that you want the application pool to use or select No Managed Code if the application uses only native code.

5 Click OK.