Custom Installer needs to detect .NET Framework

Question

I am writing a custom installer in C#.

Can you tell me an easy way to check if the machine has .NET version installed [even 2.0].

In cases where it is not installed, my app doesn't even start.

Thanks

Answer 1

MSDN has a blog post with sample code to detect if .NET 3 is installed.

[Edit: As mentioned by Stephen Clearly , the author of the blog post also released a tool that can be easily wrapped in a custom installer (and supports all .NET versions) ]

Otherwise:

You could always use the file system and check in the %systemroot%\\Microsoft.NET\\Framework folder.

This will tell you if the following release versions of .NET are installed

• v3.5
• v3.0
• v2.0.50727
• v1.1.4322
• v1.0.3705

Answer 2

我不知道您的自定义安装程序是什么，但您可以在 Visual Studio 中使用安装和部署项目，您可以在其中定义.NET Framework 启动条件。