In VC++ I can press CTRL+F7 to compile a single file, or right click on a source file ot compile it.
Is it possible to compile a single file (or current file) in C#?
I would like to for example know if my current file has any errors in it without having to compile everything.
For single .cs file compile + run:
In VS 2008, go to "Tools" > "External Tools"
Click on "Add"
Title: Run CSC (or whatever you want)
Command: C:\Windows\system32\cmd.exe
Arguments: /c C:\Windows\Microsoft.NET\Framework\v3.5\csc.exe /target:winexe $(ItemPath) && $(ItemFileName)
Initial directory: $(ItemDir)
Check Use Output Window
Apply + Ok
Go to Tools and choose "Run CSC"
If this doesn't work, verify that your paths for cmd and csc match.
No it is not possible to do this in C#.
Unlike C++ a C# file cannot be reasonably compiled on it's own to determine if it has any errors. C++ achieves this through #include statements which allows a .cpp file to understand the declaration of types available. These declarations define the structure of types the current file depends on and allows the compiler to ensure they are used according to specification.
This process is handled implicitly in C#. The set of declarations available is simply the set of all declarations in all compiled files which are otherwise accessible. There is no way to forward declare dependencies in the manner C++ does and hence no way to ensure they are being used correctly within a single file.
A Visual Studio add-in tool like ReSharper is a very good investment for this situation.
ReSharper performs continuous background solution-wide code analysis and will report issues by conveniently displaying a bar next to your code file\document scrollbar which has red\orange lines denoting any lines of code that have issues\errors. The displayed lines are click-able to navigate to the line in question and also have tool-tips detailing what the exact problem is:
http://www.jetbrains.com/resharper/features/code_analysis.html#Continuous_Code_Quality_Analysis
http://www.jetbrains.com/resharper/features/screenshots/50/marker_bar.png
The issues\warnings that ReSharper can check for are configurable (but it has excellent configuration out-of-the-box), and can denote anything from errors which would cause the code not to compile to more subtle issues where it has detected a possible null method call result which has not been explicitly checked for.
In command line:
%windir%\Microsoft.Net\framework\V3.5\csc.exe /target:library File.cs
You could reasonably attach this to the solution explorers context menu through Tools->External Tools
set the arguments to /target:library $(ItemPath)
something like that might do what you want. Though the file would have to depend on no other files in the project or in referenced binaries aside from what's in the GAC.
Shift-F6 will compile the current assembly, which is almost what you want.
Yes it's possible. You can call the compiler directly using command prompt. i.e.
Create single file 'hello.cs'
Open the Visual Studio command prompt
Navigate to the directory that has 'hello.cs'
Run csc hello.cs
Execute your single file by typing hello.exe
This will at least tell you whether a single file compiles or not. You can find more information here: https://msdn.microsoft.com/en-us/library/78f4aasd.aspx
Yes, this can be done using the Mono .NET Framework. At the command prompt, run mcs path/to/file.cs.
From the Mono docs:
To compile, use csc:
csc hello.cs
Note: csc compiler is not available on all platforms or in very old Mono versions, in such cases use mcs instead.
The compiler will create “hello.exe”, which you can run using:
mono hello.exe
Using Visual Studio 2022 csc.exe
navigate here in PowerShell:
PS C:\Program Files\Microsoft Visual Studio\2022\Community\Msbuild\Current\Bin\Roslyn
compile single file into dll or exe:
.\csc.exe -target:library -out:"C:\Users\quick\OneDrive\Desktop\C#\PerpetualCalendar\PerpetualCalendar.dll" "C:\Users\quick\OneDrive\Desktop\C#\PerpetualCalendar\PerpetualCalendar.cs"
cs file needs Main Method
.\csc.exe -target:exe -out:"C:\Users\quick\OneDrive\Desktop\C#\PerpetualCalendar\PerpetualCalendar.exe" "C:\Users\quick\OneDrive\Desktop\C#\PerpetualCalendar\PerpetualCalendar.cs"
Related
I have some trouble using binaries created by Mono csc compiler on Windows. It's a basic CLI project for Framework 4.0 with a few internal assemblies. Previously, we were building this tool with xbuild and the result was usable everywhere. Now xbuild cannot be used (internal policy reasons) so I added a script which calls csc commands directly. The .exe can still be run in Mono but on Windows I get:
Method not found: "System.String System.String.TrimEnd(Char)".
at …
This is surprising. When I investigate that function call in code, it's like:
subDirectory.Replace('/', Path.DirectorySeparatorChar).TrimEnd(Path.DirectorySeparatorChar)
So, that signature is not available in .NET but .TrimEnd(params Char[]) is. And the compiler should normally convert between a single argument and params array.
My csc command line looks like:
csc /debug:full /debug:portable /optimize- /define:"DEBUG;TRACE"
/langversion:latest .v4.0.AssemblyAttribute.cs
/out:bin/Debug/myproject.exe /target:exe *.cs /.cs
/r:bin/Debug/some_custom_depencency.dll
/r:bin/Debug/some_other_custom_dependency.dll …
/nostdlib /r:System.dll /r:System.Xml.Linq.dll
/r:System.Data.DataSetExtensions.dll /r:System.Data.dll
/r:System.Xml.dll /r:System.Core.dll /r:mscorlib.dll /warn:4
It's more or less the same what msbuild does, just using shell's wildcard expansion. And the .v4.0.AssemblyAttribute.cs file is the one I grabbed from xbuild temp files (where it defines the .NET Framework version).
I checked the old and new exes (msbuild and custom calls) in dotPeek and everything looks identical except for the signature. File is runnable with Mono itself.
I'm running out of ideas now, can anyone suggest something to try or change or knows the reason immediately?
Found the problem, it was right upfront. msbuild/xbuild uses absolute paths to the framework assemblies but my call didn't. I assumed that it would consider information from AssemblyAttribute but apparently it doesn't, mono linker happily goes to whatever its default framework is, and is not reporting mismatches at build time.
The solution: change the /r:... paths to the ones in /usr/lib/mono/4.0-api/ (or whatever the framework setting defines).
To be able to publish a single .exe I've added Costura/Fody package to my C# project. I've used this package before but now I get the following error message:
MSBUILD : error : Fody: AssemblyPath
"C:\Projects\X\MSBuild\obj\x86\Debug\X.exe" does not exists. If you
have not done a build you can ignore this error.
Finished Fody 4ms.
The strange thing is, is that intermediary X.exe is correctly build here:
C:\Projects\X\src\X\obj\x86\Debug\X.exe
The project I'm working on is fairly large. So we use a couple of MSBuild props files to put everything in the corect output directories. Both building from the command line with MSBuild and building from within Visual Studio works correctly. So I assume our props files are correct. Why is Fody looking in such a weird location for the intermediaries?
which MSBuild variable that Fody might use controls this Intermediary path?
Looking at the code that throws the exception, I see a very simple File.Exists check. It all stems from ProjectDirectory (in a WeavingTask) and you can check the places where the value is used here.
Since I have not used Fody, I can't tell you more than this. I would pay extra attention to the configuration files, since I don't see the ProjectDirectory being constructed anywhere, just injected from somewhere.
I'm a seasoned C# developer who wants, for fun, to write a bit of assembly code. I was wondering if it was easiest simply to write in byte code and somehow use the C# compiler, linker whatever. I'm a bit unsure on how to go about this.
Or maybe there is a decent assembly language out there with a step debugger and other nice things shipped in an environment that I should pick up instead?
I mainly want to write code to do calculations and output to the console window.
You can write IL code and compile it with ILASM
You can write it in MSIL and assemble it via the MSIL assembler (ilasm.exe).
As for a debugger, I've previously used DILE (DotNet IL Editor) to step through IL code, it's a bit out-dated though.
Seems that DILE is still being updated, check out the weekly builds.
you can use assembly language of .net environment which is called CIL
http://en.wikipedia.org/wiki/Common_Intermediate_Language
You can't use the C# compiler to write assembly code. However, you can you Visual Studio "CLR" projects which will compile native C/C++ with inline assembly blocks, which you can write a managed wrapper around so you can invoke via C#. See CLI/C++ Tutorials for more information.
You can also look at masm32 which you can use to write native x86 assembly libraries, then use p/invoke to execute them via C#.
Have fun!
This may be helpful to others
As for editing MSIL, we can dump assembly file to IL file by the ILDASM utility and recompile it to assembly file by the ILASM utility,
The two utilities are included in the .NET SDK.
C:\Program Files\Microsoft Visual Studio 8\VC>ildasm .
Open your assembly e.g. my.dll
After opening the file, select File->Dump. Ensure all checkboxes are selected and then click OK.
You will be prompted to save it as an IL file. I recommend creating a new directory to save as my.IL
Open my.IL by your favourite editing tool (I use Visual Studio .NET 2005/2003).
Edit your my.IL and then save it.
C:\Program Files\Microsoft Visual Studio 8\VC>ilasm /DLL X:\Folder\my.IL
I'm writing a really small application in C# and I need to include an .cs file with some class. How do I do that? I'm looking for some equivalent to PHP's "include file" or Python's "from file import something". Obviously "using" is not enough and the file has to be somehow linked. And I really don't want to start some new super-huge-totally-useless project using MonoDevelop or VisualStudio, I would like to stay with simple gmcs and command line.
You simply include both file names on the command line and ensure that the namespaces are the same or that the namespace of the included file is imported via a using statement or via fully qualified references. Then the command line for compilation looks like this:
gmcs mainFile.cs includeFile.cs
Note that the mono command line is designed to support the exact same syntax (with a few additions) as the Microsoft compiler so this is true for both of them.
Fundamentally this is what the project files and visual studio are doing (albeit going through an in memory msbuild equivalent)
There are two ways to "include" a file in .NET (and Mono)
Compile several files together.
gmcs mainFile.cs includeFile.cs
then files are then compiled together to a single assembly
Compile the includeFile to a separate assembly and reference that from the main assembly
gmcs -target:library includeFile.cs
gmcs -r:includeFile.dll mainFile.cs
this way you get two assemblies
I'm trying to pass an additional conditional compilation symbol via devenv (vs2010) on the command line to the C# compiler.
I know it can be done for the C++ compiler through the CL environment variables.
Is there something similar possible for C#?
Since this build pass needs to run Code Analysis, I'm stuck with using devenv to launch the build, as far as I know.
You can't specify any compilation symbols via the command line to devenv.exe but you can create a separate solution configuration and refer to it in the command line:
devenv.exe SolutionName /build SolnConfigName
In the project settings under build there is a setting "symbols for conditional compilation", at least in vs2008, but I think vs2010 wilkl provide similar.