Question

I have an interesting question regarding C# code.
Basically I have to call a method

BCI2000AutomationLib.IBCI2000Remote.StartupModules(ref System.Array)

Using Visual Studio 2010 the following code compiles and works perfectly:

// Startup modules
string[] modules = new string[3];
modules[0] = "SignalGenerator --local";
modules[1] = "DummySignalProcessing --local";
modules[2] = "DummyApplication --local";
ok_conn = bci.StartupModules(ref modules);

Now porting this to a game engine (e.g. Unity 3D) requires some stricter C# code since it uses Mono C# compiler. So for the same code i get the following compilation error:

The best overloaded method match for
‘BCI2000AutomationLib.IBCI2000Remote.StartupModules(ref System.Array)’ has some invalid arguments Argument 1: cannot convert
from ‘ref string[]’ to ‘ref System.Array’

Can you please give an advice on how to rewrite this code block to a more strict coding to resolve the stated error?

Answer 1

Change the type of you variable to System.Array

// Startup modules 
Array modules = new string[3] 
{
    "SignalGenerator --local",
    "DummySignalProcessing --local",
    "DummyApplication --local"
};
ok_conn = bci.StartupModules(ref modules); 

Your method StartupModules takes a ref Array as argument ; it can set the variable to any other Array. Not necessarily a string Array, it could be an int[]. That’s why you cannot call with a variable typed as Array of string.