无法在Visual Studio中构建C＃项目

Question

I am an experienced developer who is completely new to C# and windows development.

I would like to contribute to Rocksmith custom song creator with a simple feature, but I don't even know how to build and run the project in Visual Studio 2012. I cloned the git repository, double clicked on devtools/devtools.csproj then Debug -> Start Debugging but I get an error about not being able to start a class directly.

You can browse the source code of the project at: https://code.google.com/p/rocksmith-custom-song-creator/source/browse/

Answer 1

From what I can tell, you have selected a sub-project in your solution to be the starting-project.
See, if there is project that defines a Window (WinForms or WPF), right-click this project and select it as starting project.

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From MSDN

You can specify which project or projects within a multi-project solution Visual Studio will build and debug first.

To set a single startup project

1. In Solution Explorer, select the desired startup project within your solution.
2. On the Project menu, choose Set as StartUp Project.

Answer 2

.csproj只是一个项目，您需要将其放入解决方案（或打开包含的解决方案，如果有的话）

Answer 3

Do you have a .sln file? Probably that's the one you must open.