Question

I don t want to download Visual Studio 2010.

How can I start studying (not developing real applications) C# 4.0 and .NET 4.0 with just a text editor?
Can I just download C# 4.0 compiler and .NET 4.0 framework and get started? How?

I have got Visual Studio 2008 but I learn from SO questions that it can t do the job.

Answer 1

Here are the download links:

Answer 2

The C# compiler is part of the .NET Framework.

You can find it under C:WindowsMicrosoft.NETFrameworkyour_version_numbercsc.exe

So, just open a text editor, write your source code, and compile it with the command line compiler.

Answer 3

Use the command line compiler. Most text editors let you hook into this easily.

Answer 4

You need .NET framework 4.0 (if it exists already). Compiler is part of .NET package.

Edit: Just checked and .NET framework is in beta 2 stage. Wouldn t go there just yet.

Answer 5

First go and download the beta 2 of the .NET framework 4 (current at the time of this writing).

Now, make sure C:WindowsMicrosoft.NETFrameworkv4.0.21006 is in your PATH environment variable.

Here s the MSDN page for the command-line compiler so you can see the options. For simple things it usually boils down to this:

// compile an executable
$ csc /out:App.exe *.cs
// compile a library
$ csc /target:library /out:Lib.dll *.cs
// compile with a reference to System.Core.dll
$ csc /out:App.exe /r:System.Core.dll *.cs
// compile with a reference to Microsoft.CSharp.dll (you might need this to use dynamic)
$ csc /out:App.exe /r:Microsoft.CSharp.dll *.cs

Of course try to use an editor with syntax highlighting. I believe C# 4 only introduces three new keywords, so you should be fine even with highlighting for version 3 (in and out already existed, but they are now valid in a new context and dynamic is entirely new).

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