Pass array of struct to C# from C DLL

Question

Hi~

I have some codes in C and I try to create a DLL for another C# program to invoke

In my C codes I have a global array of self-defined struct which hold some data and properties, which may goes like:

struct Data {  
double t;  
double states[6]  
......  
}  
struct Data dt[20];  

I wonder how to get this pointer to the array of struct ( struct Data dt[20];) in C# so that the C# codes can manipulate the array of struct both by invoke the C functions and call new C# functions

Thank you

Answer 1

See docs

https://learn.microsoft.com/en-us/dotnet/framework/interop/marshalling-classes-structures-and-unions