shiva's answer is almost there. When you try to open the file, use FileShare.None. If the file is already open, attempting to open the file with FileShare.None with throw an exception that you can react to.

C++/CLI

Windows

File Access Permissions Problem

23 Aug 2010 by #realJSOP

Vista doesn't allow you to make changes to any folder in the Program Files folder. You have to use one of the special folders for Vista and later.Google this and pick your poison from the returned results set:"C++ vista special folders"EDIT -------You can make your setup program...

C++/CLI

Visual-Studio

file-system

Hard drive formating

24 Sep 2010 by #realJSOP

Execute the appropriate windows command line application with the necessary parameters.

C++/CLI

How to subclass a windows form?

28 Nov 2010 by #realJSOP

Look at the definition of MyForm in your project, and you'll see exactly how to do it.

C++/CLI

The Fibonacci Rabbit Problem

3 Dec 2010 by #realJSOP

We don't do homework for people. It's not that we feel like we're too good to do it, or even too busy, but it's because part of learning how to be a programmer is learning how to analyze the problem, design a solution, and finally, implement that solution. You're not learning ANYTHING by...

C++/CLI

BIAS

MFC and Windows dependancy

12 Jan 2011 by #realJSOP

Let me ask this: If other parts of your app use MFC, what's the point in removing the parts that you did. You haven't accomplished your goal of removing the MFC dependancies from your app, so why not just put them back in and call it a day?EDIT (for your 1st comment) =========My advise...

C++/CLI

New view under a Tab

20 Jan 2011 by #realJSOP

Why don't you just add the new tab page to the existing form? I see no need for a design change given the description you've provided so far.

C++/CLI

Link between Button control and Tab control items

21 Jan 2011 by #realJSOP

Have the tab control that contains the tab pages hook into the events generated by the buttons, and when ne of them fires, simply activate the associated tab page.

C++/CLI

Winform Single Instance using mutex

24 Feb 2011 by #realJSOP

I think this is how you'd do it.public partial class CSingletonForm : Form{ public: static CSingletonForm& Instance() { static CSingletonForm singleton; return singleton; } // Other non-static member functions private:...

C++/CLI

how to calling a form from a thread

1 Mar 2011 by #realJSOP

You have to use Invoke. Google is your friend: Search results for "C# ui update from thread"[^]

C#4.0

C++/CLI

code generating using CodeDom

16 Mar 2011 by #realJSOP

Try putting this in your Main method:Application.EnableVisualStyles();Application.SetCompatibleTextRenderingDefault(false);Application.Run(new MyDomForm());

C#4.0

C++/CLI

In C# can I specify a preferred core number for a thread to be executed?

23 Mar 2011 by #realJSOP

Yes, but you're wasting your time. Windows/.Net assigns core affinity for threads and processes automagically.EDIT ========1-voting this isn't going to change the truth of what I say.

C++/CLI

C++

How can i use CMFCRibbonbutton in a Dialog?

14 Apr 2011 by #realJSOP

You can't use MFC controls directly in a managed application (indicated by your tag). Here's the MSDN explanation of the class:http://msdn.microsoft.com/en-us/library/bb983509.aspx[^]Further research can be readily conducted using google.

C++/CLI

Check if project reference (dll) is existent

23 May 2011 by #realJSOP

Why don't you just put your code into a try/catch block and handle the exception properly?private: System::Void Button_Click(System::Object^ sender, System::EventArgs^ e){ try { LiveDocs doc(); doc.Show(LiveDocs::liveDocType::Manual); } catch...

C++/CLI

Your opinion please (visual programming)

3 Jun 2011 by #realJSOP

I wouldn't specialize if I were you. Just move to .Net and be done with it. At the very least, learn whatever you need to get your job done, and if you have time, investigate/learn stuff that looks interesting. If you have even a cursory understanding of how each .Net platform works, you can...

C++/CLI

C++

What is the alternative to multiple inheritance in .NET

7 Mar 2012 by #realJSOP

Inheriting interfaces. You can inherit one class, and multiple interfaces. Alternatively, you can create an inheritance chain. I suppose you could also use dependency injection to get around it.When using MFC (unmanaged C++), you couldn't multiple inherit from anything derived from...

C++/CLI

.NET

Passing data/information between forms

9 Mar 2012 by #realJSOP

If you want to share data between forms, your best bet is to make put data into static class that both forms can access. (You're going to have to convert the code below to C++.)public static class Globals{ public static string MyString { get; set; }}

C++/CLI

Writing a Total Commander plug-in in Visual Basic (or C#)

8 Mar 2009 by Đonny

This article introduces and describes a framework that allows the creation of managed plug-ins for the Total Commander file manager.

How to Refresh Window while Hiding a Image?

24 Oct 2010 by 002comp

Hello FriendsI am Creating an application using vc6 and In that m displaying a bmp with the help of BitBlt andCClientDC.Now,On some button click I want to Hide it.And m displaying this bmp on OnPaint().Is there any way to deselect the bmp to hide it?RegardsYogesh

C++/CLI

DocMounter 2: A tool to build VS.NET documentation (now with Sandcastle)

15 Nov 2010 by 10Tec, Sergey Gorbenko

Tool for creating MS Visual Studio documentation files - XML Summaries, HxS/MSHC help solutions and manuals.

How to call a method in class C++

30 May 2013 by 123ezone

I have built a windows form application in C++ and I created a class with methods. But when accessing those methods it doesn't work.I have included header files as well as those methods are public. Please help me with this problem.Here is the method.int...

C++/CLI

how to create a web proxy program

18 Apr 2012 by 7503

To create a service proxy, you can either run the svcutil.exe or simply add a Service Reference from your client application.Once you added the service reference, you can then instantiate the service object such as, HelloServiceClient svc = new HelloServiceClient();.

Java

C++/CLI

Use Intel C++ compiler with C++/CLI

23 Mar 2013 by 8MX

Quick and easy way to use the Intel C++ compiler with C++/CLI.

How to send file from server to multiple clients at a time in mfc using sockets ?

20 Apr 2010 by @Intersect☺™

See this below link, this will assists you surely to serve your purpose Single Server With Multiple Clients : a Simple C++ Implementation[^]

Union

3 Apr 2009 by _8086

union u{ char ch[2]; int i;};int main(){ union u x={0,2}; cout

How to Pass User Defined Class objects from C++ to C# using CLI

27 Nov 2012 by __John_

Try here...http://blogs.msdn.com/b/jonathanswift/archive/2006/10/02/780637.aspx[^]

C++/CLI

How to learn language C#?

14 Aug 2013 by _Asif_

Check these linkshttp://social.msdn.microsoft.com/Forums/en-US/9282a43f-ee90-4375-8ad1-0f3841194b68/best-c-book[^]http://www.dreamincode.net/forums/topic/206400-good-c%23-tutorial/[^]

C++/CLI

C++

MFC

Unable to download file

18 Feb 2014 by _Damian S_

Problems with the codeproject site itself are best reported here: http://www.codeproject.com/Forums/1645/Site-Bugs-Suggestions.aspx[^]

C++/CLI

How to "permanently" draw on screen

11 Apr 2013 by Aarón C de C

Use endless loops.while(true){//Your drawing code}Orfor(;;){//Your drawing code}You should probably make a Windows Form control for this, and run the endless loop in a separate thread.

C++/CLI

Mixed DLL Loading problem - Converting VC 6.0 DLL into VS 2008

18 Feb 2011 by ab4rum

Hi Everybody,Can anybody pls help me for my problem.I m facing a Mixed DLL Loading problem. My Parent program has successfully been converted from VC 6.0 to VS 2008, /clr (Mixed mode). However, facing problem for my security DLL project, which was VC 6.0 MFC Extension DLL. Login ID &...

C++/CLI

A CMatrix class for dynamic sized matrices

30 Apr 2006 by abcdefrgtt

A class for manipulating dynamic matrices.

How to code a Scientific calculator in C++

4 Jan 2013 by Abdelrahman Elzedy

//scientific calculator in c++//written by Abd - elrahman Elmasry//e-mail: abdoasemelzedy@hotmail.com//there is no copy right for this code#include//main library#include// for mathimatics function#include//for exeption conditionsusing namespace...

C++/CLI

console

calculator

Using int point to do memory copy and get attempted to read protected memory in C++Cli

8 Nov 2014 by abdurahman ibn hattab

Your line:int* _pointer = (int*)DataArray[0];But you should use this instead:int* _pointer = (int*)&DataArray[0];

C++/CLI

C++

Using c++ .lib file in WCF or c# wrapper?

14 Dec 2011 by abhay bansal

I have some c++ .lib files(unmanaged) and I want to create a WCF service in which all the functions written in lib files can be called and finally can be used in distributed system (web, android, iphone).Doubts:Do I need a DCOM object to communicate cpp lib to c# and then DCOM dll is...

C++/CLI

WCF

Using c++ .lib file in WCF or c# wrapper?

14 Dec 2011 by abhay bansal

Thanks Richard for the links. But I can't use DLLImport function as I have cpp classes and want to pass objects in my functions.Therefore, Extern "c" cant be used.

C++/CLI

WCF

C++ CheckBox Checked constant

17 Aug 2010 by Abhi Lahare

Please take a look at this article.HTHAn OwnerDraw ComboBox with CheckBoxes in the Drop-Down[^]

C++/CLI

checkbox

Shared_Pointer

19 May 2008 by Abhi_Coder

Implementation of Shared Pointer

Hard drive formating

24 Sep 2010 by Abhinav S

Some discussions here[^].

C++/CLI

I want to delete one of my article

8 Nov 2010 by Abhinav S

Have a look at the posting / updating guidelines here[^]. The process for deleting an article is similar to updating one.

C++/CLI

listening to audio in windows

5 Apr 2011 by Abhinav S

Links to some articles http://www.codeproject.com/kb/audio-video/.

C++/CLI

C++

i would like to know to about asp.net n session

18 May 2012 by Abhinav S

Your question tag says C++/CLI. This is an ASP.Net question so you will most likely get fewer answers with an incorrect tag.Sessions, start withhttp://msdn.microsoft.com/en-us/library/ms972429.aspx[^]ASP.NET Session Management Internals[^]

C++/CLI

Write Text on DirectShow Preview Window

12 Feb 2013 by Abhinav S

What you normally do is overlay text on a video - you don't need to add a label.There are some filters that would allow you to do this for e.g. Pure .NET DirectShow Filters in C#[^] describes a filter that adds text to a video.

Pls what will it take for me to develop a social networking web application like facebook

11 Nov 2013 by Abhinav S

It requires a lot of work. If you have no programming experience, you might just want to learn programming first.If you have some experience, use that particular language and try building a website for starters.

how do disable right click options

28 Feb 2014 by Abhinav S

At textbox level, simply set the textbox property "ShortcutsEnabled" to false and you got it.Handle the right click on form and disable right click for e.g.private void form_MouseClick(object sender, MouseEventArgs e){ if (e.Button == System.Windows.Forms.MouseButtons.Right) ...

C++/CLI

How to change Form's icon and tray icon?

14 Sep 2014 by Abhinav S

TryAdding Icons to the System Tray[^]http://www.gamedev.net/topic/601819-csetting-icon-for-an-exe/[^]

C++/CLI

C++

Visual-Studio

How do I add data at the end of the Dictionary

17 Jun 2015 by Abhinav S

Conceptually, a dictionary does not have a beginning and an end - just a key and value.Adding a new key and value will add at the last location.

C++/CLI

Win32 x86 Calling Conventions

4 Apr 2017 by Abhineet Ayan Verma

Major calling conventions for Win32 and best suited functions

How to code for auto generated mails

30 Dec 2012 by Abhishek Pant

this might help you:SMTP server settings on local machine to use automatic email service in ASP.Net using C#[^]SMTP Mail Delivery[^]Sending the contents of a webpage with images as an HTML mail[^]

C++/CLI

Matlab 7.1+ and Visual Studio 2005

11 Jul 2007 by abn9c

An article describing how to compile Matlab 7.1-7.4 mexw32 files using Visual Studio 2005

Why Exception from dialog don't fix by try-catch

19 Jan 2015 by ac_code

Hello,I can't understand why the try-catch block in one dialog box are not caught exceptions (in project VS2005 C++ WinForms .NET 2.0)There is one form. Second form called from it by button. Call the ShowDialog method is framed by try-catch (Exception^ ex)When you press button in the...

Dynamic Message Passing for C++

23 Mar 2009 by Achilleas Margaritis

Dynamic message passing for C++.

Speaking Alarm Clock

12 Nov 2001 by Adalsteinn B. Bjarnason

Unique alarm application that works.

API Hooking (LoadLibrary)

30 Jun 2009 by Adam Roderick J

A simple approach to Hook LoadLibrary API with a sample

If You Can Help

18 Nov 2010 by AddictedHosting

Hi,I don't know that much about code and thing I am looking for is some help on getting some things made.wot i want is a app to have a text box that can have a name put in and bottons under the text box when you click one of them which say is named kick it will take the text from the box...

C++/CLI

If You Can Help

18 Nov 2010 by AddictedHosting

Hi it is a tool for a program i go on it just so we can op the room which something that works like this has a user name box and bottons under that which say kick ban and and some more that can be put in. when you hit the kick botton it will send to a windows /kick ady or /ban ady...

C++/CLI

parallel port problem

24 Dec 2009 by Adnan Merter

hii create a program a couple years ago in order to control step motor via parallel port by using VC++2005 and XP, it worked finebut now i am writing the same codes and linking the same library (inpout32.lib) in VC++ 2008 and windows 7, it also works and no error acoours, but i cannot...

C++/CLI

Sending Non-graphic Characters

17 Mar 2012 by Adnan Merter

hi,i am just beginning a new project which requires PC to Microcontroller board via rs232.everyting is fine but i dont know how to send Non-graphic ASCII characters.i mean SOH ACK NAK ETX.... etc. i found some of the such as LF NULLdo i have to use ascii to number functions each...

C++/CLI

C++

global object declaration

1 Apr 2012 by Adnan Merter

hi all,i need to find out how i can declare a global object which can be accesible from all functions of the same application.i created a global serialport object :System::IO::Ports::SerialPort^ serialPort = gcnew SerialPort(L"COM4" , 300, Parity::Even , 7, StopBits::One);then,...

Smart debug logging in C++.NET

27 Nov 2002 by Adrian-Bogdan Andreias

A smart logger that makes use of the new predefined VC++.NET macros.

Calling a .bat script which calls a PowerShell Script always get the exit code 1

6 Nov 2012 by Adriana Frunza

Hello everybody,I have from my console Qt application a .bat file which calls a Windows PowerShell script file. But th exit code is always 1 instead of 0.Here is the code:Console App: QFileInfo fileInf("listFiles.bat"); QStringList arguments; arguments

C++/CLI

WinForm app: button disable after another form closed?

26 Oct 2012 by adriancs

[Edit]Marcus's Answer would be better.[/Edit]This can be done by passing the button control from Form1 into Form2.Example:private void button1_Click(object sender, EventArgs e){ button1.Visible = false; // pass in the button into Form2 Form2 f = new Form2(ref...

C++/CLI

WinForms

cli/C++ how to define cli::array with unmanaged type element?

12 Sep 2010 by adzhou

I have a native C/C++ structtypedef struct { ... } AStruct; and in C++/CLI code i define one delegate and one cli array as followingpublic delegate void UpdateDataDelegate(AStruct% aSt,AStruct% bSt); cli::Array^ args=gcnew cli::Array(2); // complile failed!!!!。...

C++/CLI

Copy the string from const char* To char[500];

27 May 2010 by Aescleal

If you're programming in C, then:strncpy( q, p, 499 );q[499] = '\0';will do the trick and work however long the string is. If you'd like to obfuscate things a bit more then you can combine the two lines into one by exploiting the return value of strncpy:strncpy( q, p, 499 )[ 499 ]...

How to simplify this for loop with many if else inside ?

9 Aug 2010 by Aescleal

Try hoisting everything you can out of the if statements - first off the assignment to y is the same whatever values you're using:for (int j=0; j= 1 && j

C++/CLI

C++

Advice moving from pure C to C++ or C#

4 Oct 2010 by Aescleal

Slightly off the wall answer here... Instead of learning C++ or C# why not try something a bit different? Python isn't a bad OO language and you can get things down fairly quickly in it. And it's got a C interface so you can plug stuff in written in C if you need extra performance.And if not...

C++/CLI

C++

printf like function question!

16 Oct 2010 by Aescleal

If you're using C++ there's no reason to use printf or the whole god awful family of C relics. Use a stream. Then you get type safety and you won't try reading return addresses off the stack to interpret as strings. Consider rewriting along the lines of:int main(){ int d = 20; ...

how to send data generated by one application to another server?

30 May 2012 by Aescleal

The first thing you have to know is the protocol the server uses. If it's a common one like HTTP you can use an off the shelf library e.g. wininet[^] or libcurl[^] to do the business for you. If it's a proprietary protocol or one you specify then you're going to have to get a bit further...

How to use Visual Studio Macros within a C++ CODE

29 Oct 2013 by Aescleal

Off the top of my head the best way of using a VS macro in C++ code would be to associate your VS macro with a C++ preprocessor define using the /D command line parameter (properties->C++->preprocessor->preprocessor definitions).Just make sure you have a decent default if someone doesn't set...

Performance of stdext::hash_value() defined in std::hash_set

30 Oct 2013 by Aescleal

Try using std::map first. Yep, the performance is rubbish but often you can't tell the difference between optimal and rubbish when you've got a small number of things (less than thousands) to choose between. Another thing you might want to try is std::unordered_map as you can then write portable...

Buy wow accounts - deleted for advertising

4 Mar 2010 by affricah741

ADVERT - deletedADVERT - deletedADVERT - deletedADVERT - deleted

C++/CLI

FRE Stream>>>>Barcelona vs Atlético de Madrid en vivo España La Liga de fútbol en línea en PC

16 Dec 2012 by Afrin Jaman

http://tinyurl.com/bu3cewt[^]Quote:http://tinyurl.com/bu3cewt[^]http://tinyurl.com/bu3cewt[^]Quote:http://tinyurl.com/bu3cewt[^]Quote:http://tinyurl.com/bu3cewt[^]Quote:http://tinyurl.com/bu3cewt[^]Quote:http://tinyurl.com/bu3cewt[^]Quote:http://tinyu...

C++/CLI

How to Add a Online Chat in my aspx page ?

21 Jul 2014 by Afzaal Ahmad Zeeshan

Since you're talking about ASP.NET you can have the SignalR service by ASP.NET. Which is dedicated for such realtime updates accross the network.All the users across the system would be able to chat and you can control the messages by showing them to only a number of users....

Normal Comiler vs .Net compiler

6 Nov 2014 by Afzaal Ahmad Zeeshan

Roslyn[^] is the .NET compiler. Read the MSDN source document for that. A normal compiler[^] is a compiler that is a template for every compiler because if you remove the normal (it is normal to remove normal). Rules of the normal compiler and its details can be found at the Wikipedia....

Get error "Cannot open include file: glibconfig.h" in Visual Studio 2010

8 Nov 2014 by Afzaal Ahmad Zeeshan

This is a Fatal Error C1083[^]. Read that MSDN documentation to learn more about it. But the best remedy is to check for the fileName that you're including because this error generates when the compiler is not able to find a name by that name. Make sure that...

c++ Qt or C# or JAVA !!

15 Aug 2015 by Afzaal Ahmad Zeeshan

Ah, same question from Quora, maybe same user from there too? :laugh:I answered this question on Quora in the following words: Afzaal Ahmad Zeeshan on Quora[^]:Qt... never will be used. But, as Qt claims it can create applications for every platform. You also are aware of Qt and can...

Windows.h?

2 Jun 2009 by agetina

I can read the prototypes for windows.h in the include folder (I have installed dev c++) but i want a list of explained functions. I don't know for what to use each of them.Thank you! modified on Wednesday, June 3, 2009 4:29 AM

code source "let me google that for you"

15 Nov 2022 by agoswami_84

Hi,could anyone provide me code source or mechanism for "let me google that for you". As i want to personalize the toolor if this is not the correct forum than if possible than please provide me correct forum

C++/CLI

code source "let me google that for you"

11 May 2010 by agoswami_84

my intension was to get info about some source code or mechanism which work like "le me google that for you" so that I can personalize Anyone have idea or info about thisI belive I did not ask any wrong question but place or forum may be worng but it is not that much wrong that I need...

C++/CLI

code source "let me google that for you"

11 May 2010 by agoswami_84

it does not give me much informationdoes anyone implement similiar kind of thing

C++/CLI

About TempTracker windows

14 Feb 2013 by Agustin Recoba

Hi again.. and sorry for bothering you... well, im working on a project... and I don't know if you know about a software called TempTracker, its free, and the thing that I want to do, its so save the coords... i mean, the software it's for the calibration of a pair of glasses, but when you hint...

Using CRTdbg to detect memory leak

10 May 2010 by ah123ah

Is there any way to use CRTDBG for detecting a memory leak in other applications?I mean, A is the program where CRTDBG code/APIs are written and B is the application in which I want to detect memory leak with the help of A.Can someone help me in this regard?

C++/CLI

C++ CheckBox Checked constant

18 Aug 2010 by ahiggins1986

Hello,This problem seems so trivial, yet it is causing me a big headache. I have 4 checkboxes in my custom control, which I use to control which subsets to show on a graph. When any of these CheckBoxes' Checked property is changed, it fires an event handler.The problem is that the...

C++/CLI

checkbox

How to cause a CPropertySheet to show a particular page .. [SOLVED]

16 Aug 2009 by Ahmed Charfeddine

?Thanks. Easy Profiler : a compile-time profiler for C++www.potatosoftware.commodified on Sunday, August 16, 2009 5:41 PM

Dynamic Linked List Tree

18 Feb 2007 by AhmedEssamNaiem

Using Vector and double linked list to create trees

How to learn language C#?

18 Aug 2013 by Ahsan98

there are many good websites for that...some of the good websites aremsdn.microsoft.commybringback.comlynda.com(good but this is not free it needs money)and codeproject too.... :)also this is good ebook for learning c#...

C++/CLI

C++

MFC

Gradient tab control?

31 Oct 2010 by aim999

Is it possible to make a VC++ WinForms gradient tab headers/pages like this one[^]?Thanks a lot^^Edit:When it comes to converting, I still have a problem:I checked the C# source after I downloaded it but couldn't find the gradient code.Well, I'm still a beginner :-O

C++/CLI

Counting List Box Duplicate Items

6 Nov 2010 by aim999

Hello all.I have two list boxes. One of them is filled with file names and their directories.I want to count all duplicate file names in the first list box and put the file name and the number of duplication in the second list box.like: 0.TXT (6)the...

C++/CLI

Counting List Box Duplicate Items

6 Nov 2010 by aim999

thanks a lot for the answer but I really couldn't understand many of it's expressions.I googled it but all I found was VB code.and about the idea you provided above, I tried it but it gives me an out of range exception.here is what I did so far:int L =...

C++/CLI

Counting List Box Duplicate Items

7 Nov 2010 by aim999

private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { for(int x=0; xItems->Add("D:\\QuakeII\\"+x+".TXT"); } for(int y=0; y

C++/CLI

owner drawn listBox with hot tracking

22 Nov 2010 by aim999

Hello everybody.I made a list box with the owner draw variable property enabled and handled both draw and measure item events to customize it.the problem is:I used a gradient brush for the selection but the color changes from the top of the list box to its bottom.:confused: I wish to...

C++/CLI

owner drawn listBox with hot tracking

22 Nov 2010 by aim999

I really should have concentrated.I changed [ClientRectangle] to [e->Bounds] and it went alright.but still don't know about Hot-tracking :(( could anybody give me logic or code. I found it's related to Mouse Enter, Move, and Leave events but couldn't understand the code. It wasn't in...

C++/CLI

POP3 Client using Sockets

13 May 2008 by aisha.ansari

post office protocol to retrieve mails

Parallel streaming

31 Oct 2010 by Ajay Kashyap 87

Hi ,I am a student and have started working on a project.I am working on parallel streaming of video.If anyone has ideas or some useful links and information please post it or mail it to *Mail Removed*.

C++/CLI

Resource file opening problem

9 Jan 2010 by Ajay Vijayvargiya

Since Windows Vista supports "India' English", and has the following definition:0x4009 India (IN) 0x10 SUBLANG_ENGLISH_INDIA Visual Studio takes this as the project's language.While creating new project, one should select 'English (US)' as 'Resource Language' in Project Wizard.

printf like function question!

16 Oct 2010 by Ajay Vijayvargiya

Perform Code Analysis with your code with /analyze switch with your Visual C++ compiler. You need to have Team System or the Ultimate version to do that.

Project settings for native

16 Oct 2010 by Ajay Vijayvargiya

..//int g = 1;g++;....///This code not compiling? It can be because of only few reasons:g is #defined as a macro!g is actually declared to be constg is in a class, and the method is constAnd FYI, a .C file cannot be compiled with /clr.

C++/CLI

Set Full Trust permission in CPP

17 Nov 2010 by Ajay Vijayvargiya

I faced the similar problem.The issue was with C++ DLL project which was on network.I just, after much of RnD, copied the DLL project into local machine, and it worked!

C++/CLI

C++

Installing and Using side-by-side native assemblies from C# and MC++

10 Sep 2008 by akiran

This article details how to create, install and use side-by-side native assemblies from C# and MC++.