CODEWITHSUNDEEP
c#c++.netarrayscommand-line-interface
J-W
J-W

Reputation: 418

pass array from c++/cli to C# in a 'typesafe' way

which is the easiest way to return a list/vector/array of objects from c++/cli to c# in a typesafe way?

//C++/CLI project 1
public ref class MyClass
{
}

public ref class Factory
{
    array<MyClass^> getObjects() {...}
}

//C# project 2
Factory f = new Factory();
System.Array a = f.getObjects(); // not typesafe! I'd like to get an array/list/vector of MyClass elements

I tried returning a 

List<MyClass^>

from C++ and read an 

IList<MyClass^>

from C#, it didn't compile...

thanks, Chris

Upvotes: 0

Views: 1691

Answers (1)

Mike S.
Mike S.

Reputation: 2111

Array in C++/CLI is "managed pointer" (called reference), therefore it is written as array<Type>^. You can initialize it via gcnew array<Type, dimension>(count) which equals to C# new Type[count], when dimension is 1.

So in your case, it could look like this:

array<MyClass^>^ getObjects() { 
    return gcnew array<MyClass^,1>(number) ; 
}

Upvotes: 1

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