Re: [Help-glpk] Fwd: build glpk.dll for C# so that I can call it from VS2013 on win7.

[Heinrich Schuchardt]

Hello,
 
>> A reference to "C:\myPATH\glpk_4_57.dll" could not be added.
>> Please make sure that the file is accessible and that is a vaid assembly or 
>> COM component.
 
glpk_4_57.dll is not an assembly but a native library.
You have to ensure that it is in the library search path.
see:
https://msdn.microsoft.com/en-us/library/windows/desktop/ms682586%28v=vs.85%29.aspx
 
You could copy the dlls needed in the post build phase, see
https://social.msdn.microsoft.com/Forums/en-US/1b1b316a-8648-4243-a651-84de51fd2508/reference-native-dll-from-managed-c-project?forum=vssmartdevicesvbcs
http://stackoverflow.com/questions/1043913/copying-a-dlls-dependencies-in-visual-studio
 
Best regards

Heinrich Schuchardt
 
 
 

Gesendet: Donnerstag, 17. Dezember 2015 um 05:13 Uhr
Von: "usa usa" 
An: "Heinrich Schuchardt" <address@hidden>, address@hidden
Betreff: Fwd: [Help-glpk] build glpk.dll for C# so that I can call it from 
VS2013 on win7.

Sorry, A typo in my last email.
 GLPK version is 4.57.
 

---------- Forwarded message ----------
From: usa usa <address@hidden>
Date: Wed, Dec 16, 2015 at 11:08 PM
Subject: Re: [Help-glpk] build glpk.dll for C# so that I can call it from 
VS2013 on win7.
To: Heinrich Schuchardt <address@hidden@gmx.de]>
Cc: address@hidden@gnu.org]

 

Hi,

I have downdloaded GPLK for C# from 
http://sourceforge.net/projects/glpk-cli/[http://sourceforge.net/projects/glpk-cli/].
I have installed it and passed all install test on win 7.
GLPK version is 4.57
 Now, I am trying to write a simple C# program from Visual Studio 2013 as 
follows:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using org.gnu.glpk;
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("GLPK " + GLPK.glp_version()); // Got exception 
here
        }
    }
}
 
But, I got exception:

An unhandled exception of type 'System.TypeInitializationException' occurred in 
ConsoleApplication1.exe

Additional information: The type initializer for 'org.gnu.glpk.GLPK' threw an 
exception.
 
>From the README file of the package, I saw that

"For building and running your own application you will need the following files
from the w64 directory:

* glpk\_?\_??.dll - the GLPK native library
* libglpk\_cli\_native.dll - the GLPK for C#/CLI native library
* libglpk\_cli.dll - the GLPK for C#/CLI assembly"
 
When I was tryingto add them as reference to my C# prpject , I got:

A reference to "C:\myPATH\glpk_4_57.dll" could not be added.
Please make sure that the file is accessible and that is a vaid assembly or COM 
component.
 
i got the same error for libglpk_cli_native.dll.
 
Only libglpk_cli.dll can be added.
 
Do I miss something here  ?
 
Why the installation test can be apssed (printed out GLPK version) but I cannot 
run the same program from Visual Studion 2013 ?
 
Any help would be appreciated.
 
Thanks