Passing structure from Managed C++ to C#,

[sarvankr]

Hi,

i am new bie to managed C++ , i have an C# DLL , which i need to invoke from managed C++ and pass a structure as a parameter , Can any one help me out on this issue...



Thanks in advance...

[Plater]

Can you do it with a byte[] array? And then just cast (on the unmanaged c++ side) and parse it (on the managed C# side)

Although you can create structs in c# too, and probably do something with Serialization for it.

[sarvankr]

Hi All,

I have found the solution for this problem , the simplest way of passing structure from Managed C++ to C# is ..



Eg:

In MC++

public struct xyz
 
{
 
public:
 
int x;
 
int y; 
 
};
 

Method in MC++ invoking C# Method say

...............

..............

CsharpDLLNamespace::CSharpeClass^  ObjectofSharpMethod= gcnew CsharpDLLNamespace::CSharpeClass();
 
 
 
xyz obj;
 
obj.x = 10 ;
 
obj.y = 20 ;
 
ObjectofSharpMethod>CsharpMethod((System::IntPtr)&obj);
 

In C#

[StructLayout(LayoutKind.Sequential, Pack = 2)]
 
public class xyz
 
{
 
public int x;
 
public int y;
 
}
 
 
 
public void CsharpMethod(IntPtr pob )
 
{
 
xyz obj = new xyz();
 
Marshal.PtrToStructure(pob, obj);
 
Console.WriteLine("Converted Successfully" + "x : " + obj.x+ "y :" + obj.y);
 
}