How to Read DLL (Function Two Output ) C#

I created a DLL. [ Library Compiler ] Type [.Net Assembly]

Dll In Output Two Point " [Out_A, Out_B] = Function_ABC [ a,b,c,d] "

I want to read data from two positions.

Two Position

" [Out_A , Out_B] = Function_ABC [ a,b,c,d] "

MWArray Output_ABC = Mat_Fun.Function_ABC(a,b,c,d);

??????? < What should I do >

One Position [ No problem ]

" [Out_A] = Function_ABC [ a,b,c,d] "

MWArray Output_ABC = Mat_Fun.Function_ABC(a,b,c,d);

double[,] mat_Out_A = (double[,])((MWNumericArray)Output_ABC).ToArray();