CSharp
Build from source
There is a C# example code in examples/call_highs_from_csharp.cs
. From the HiGHS root directory, run
cmake -S. -Bbuild -DCSHARP=ON
If a CSharp compiler is available, this builds the example using cmake and generates a binary in the build directory (build/bin/csharpexample
).
NuGet
The nuget package Highs.Native is on https://www.nuget.org, at https://www.nuget.org/packages/Highs.Native/.
It can be added to your C# project with dotnet
dotnet add package Highs.Native --version 1.7.2
The nuget package contains runtime libraries for
win-x64
win-x32
linux-x64
linux-arm64
macos-x64
macos-arm64
Details for building locally can be found in nuget/README.md
.
C# API
The C# API can be called directly. Here are observations on calling the HiGHS C# API from C#:
- The file
HiGHS/src/interfaces/highs_csharp_api.cs
contains all the PInvoke you need. - Make sure, that the native HiGHS library (
highs.dll
,libhighs.dll
,libhighs.so
, ... depending on your platform) can be found at runtime. How to do this is platform dependent, copying it next to your C# executable should work in most cases. You can use msbuild for that. On linux, installing HiGHS system wide should work. - Make sure that all dependencies of the HiGHS library can be found, too. For example, if HiGHS was build using
Visual C++
make sure that theMSVCRuntime
is installed on the machine you want to run your application on. - Depending on the name of your HiGHS library, it might be necessary to change the constant "highslibname". See document on writing cross platform P/Invoke code if necessary.
- Call the Methods in
highs_csharp_api.cs
and have fun with HiGHS.
This is the normal way to call plain old C from C# with the great simplification that you don't have to write the PInvoke declarations yourself.