是否可以在 Visual Studio 2008 中使用 C# 4.0? [英] Is it possible to use C# 4.0 with Visual Studio 2008?

问题描述

我非常清楚 Visual Studio 2010 可与 C# 4.0 配合使用.但是现在我在犹豫是否可以使用 Visual Studio 2008 测试 C# 4.0 功能.

I'm pretty aware that Visual Studio 2010 works with C# 4.0. But now I was wandering if I'm able to test C# 4.0 features with Visual Studio 2008.

我曾经这样做过，使用 C# 3.0 和 Visual Studio 2005 破解 app.config 文件.

I did that one time, using C# 3.0 with Visual Studio 2005 hacking the app.config file.

有人在 VS2008 中成功使用 C# 4.0 吗?

Did anyone have any success using C# 4.0 in VS2008?

我已经安装了 Net Framework 4.0 测试版，重新启动，创建了一个新的 WPF 应用程序，选择了应用程序属性，但目标框架只能设置为 Net Framework 3.5.

I've installed Net Framework 4.0 beta, rebooted, created a new WPF application, chosen Application properties, but the Target Framework can be set only to Net Framework 3.5.

推荐答案

没有.您不能将 .NET 4.0 与 VS2008 一起使用，也不能使用 C# 4.0 功能 - 这与试图使 VS2005 与 C# 3.0 兼容的情况完全相同.编辑器、Intellisense 等只是不知道新功能.

No. You can't use .NET 4.0 with VS2008, and you can't use the C# 4.0 features either - it's exactly the same situation as trying to make VS2005 cope with C# 3.0. The editor, Intellisense etc just don't know about the new features.

一个重要方面是，即使 看起来 Visual Studio 只是使用外部 csc.exe 编译器，但它不是 - 还有另一个进程内".该进程内编译器与其附带的 Visual Studio 版本相关联，因此它只知道当时可用的语言功能.

One important aspect is that even though it looks like Visual Studio is just using the external csc.exe compiler, it isn't - there's another "in-process" one. That in-process compiler is tied to the version of Visual Studio it comes with, so it only knows about the language features which were available at the time.

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