473,378 Members | 1,380 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,378 software developers and data experts.

Passing structure from Managed C++ to C#,


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...
Jan 21 '08 #1
2 3761
9,208 Expert Mod 8TB
You will need to read the interoperability pages in MSDN.
Jan 21 '08 #2
Hi All,

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


In MC++

public struct xyz



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);

Jan 23 '08 #3

Sign in to post your reply or Sign up for a free account.

Similar topics

by: Chris | last post by:
Hi, I seem to be having a problem I can't quite figure out. Currently, I have the following code (below). In the SendMsg function, I create a 'Qtkmsg' which converts the string 'text' into a...
by: Gregory Khrapunovich | last post by:
Hi, I need to pass a structure between C++ DLL and C# client (both ways). Among other elements the strcuture must contain a fixed size array of integers. In C++ I can successfully declare a...
by: nygiantswin2005 | last post by:
I would like to know how do I pass a pointer to a struct from managed code to unmanaged code. For example if I create structure like this in managed code. StructLayout( LayoutKind.Sequential,...
by: John Alway | last post by:
Hello, I'm using a DLL I wrote in C++, and am attempting to call and use it from VB. This works fine for functions where I pass parameters by value, but I can't get pointers to work. I get...
by: Arne | last post by:
How do I pass a dataset to a webservices? I need to submit a shoppingcart from a pocket PC to a webservice. What is the right datatype? II have tried dataset as a datatype, but I can't get it to...
by: renjini | last post by:
I am a starter in C# ... I will present my problem : I am wrapping a C dll in C#. The C dll exports a function which takes a structure MYSTRUCT holding 2 function pointers(callback functions)....
by: ElysianEagle | last post by:
Hi, I have a DLL written in C that creates a structure as a local variable, populates it, and then calls a function in managed c#. here is what im talking about: //-----unmanged code's header...
by: Subodh | last post by:
Hi All, I want to use a C++ API in a static lib that returns a linked List in C# I am planning to P/Invoke to perform the Interop, I would like to know which way will be better to interop a...
by: Andy Baker | last post by:
I am attempting to write a .NET wrapper for a C++ DLL file, but am having problems with passing strings as parameters. How should I be writing my C# function call when the C header file is...
by: CloudSolutions | last post by:
Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
by: aa123db | last post by:
Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.