SWIG example of defining C# property

controller.i

/*
    swig -csharp -c++ -namespace MyControl -outdir ..\gen MyControl.i
 */

%module MyControl

%include <attribute.i>

%{
    /* Includes the header in the wrapper code */
    #include "..\include\MyControl.hpp"
%}

/* Parse the header file to generate wrappers */
%include "..\include\MyControl.hpp"

/* Define a SWIG attribute which will generate a C# Property */
/* Parameters: class, type, property_name, getter, setter */
%attribute(MyControl, int, Level, GetLevel, SetLevel);

Then in C# you can use this as:

    var control = new MyControl();
    System.Console.WriteLine($"{control.Level}");