c# - 在 .net 4.0 版本上找不到 System.Web 程序集

Question

我将 .NET 从 3.5 更新到 4.0 版本，但是更新程序集后 System.Web 不再工作。

我收到以下错误:

Warning 1 Could not resolve assembly "System.Web". The assembly is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project.

使用 3.5 版本它工作正常。我该如何解决这个问题？

Answer 1

将项目从 ClientProfile 更改为完整的 .NET 4.0

The .NET Framework 4 Client Profile is a subset of the .NET Framework 4 that is optimized for client applications. It provides functionality for most client applications, including Windows Presentation Foundation (WPF), Windows Forms, Windows Communication Foundation (WCF), and ClickOnce features. This enables faster deployment and a smaller install package for applications that target the .NET Framework 4 Client Profile.

参见 Differences between Microsoft .NET 4.0 full Framework and Client Profile