call a function in dll dotnet !!!!

[ChristopheOce]

Hi,

I have a basic msi project made with installshield 2008 who installs some dll dotnet, xml file and others.

I have a library CheckUserLogon who have a method CheckUser who take 3 string parameters.
this dll is in the package.

Now when i call this method in installscript with this code :

begin 
    
    cchbValueBuffer = 512;
    nResult = MsiGetProperty(hMSI, "SOURCEDIR", szPathSupport, cchValueBuf); 

	
	szPathCompletDll = szPathSupport+"program files\\****\\****\\CheckUserLogon.dll";
    MessageBox("Path complet :" + szPathCompletDll, INFORMATION );
    	
	nResult=UseDLL(szPathCompletDll);  
	
    if (nResult = 0) then
        MessageBox ("UseDLL successful \n\n.DLL file loaded.", INFORMATION);
    else
        MessageBox ("UseDLL :"+ szPathCompletDll +" failed.\n\nCouldn't load .DLL file.", INFORMATION);
        abort;
    endif;
    
    //Gets the domain
 cchValueBuf = 512;
nResult = MsiGetProperty(hMSI, "WINDOMAINNAME", szWinDomain, cchValueBuf); 
	
	//Gets the user
  cchValueBuf = 512;
nResult = MsiGetProperty(hMSI, "WINUSERNAME", szWinUser, cchValueBuf); 
    
    //Gets the password
 cchValueBuf = 512;
nResult = MsiGetProperty(hMSI, "WINUSERPASSWORD", szWinPass, cchValueBuf); 
    
    //Test all properties
 MessageBox("Domain name :"+ szWinDomain + " User name : " + szWinUser+ " Password : " +szWinPass, INFORMATION);
    
    //Call the dll
 szRet = CheckUserLogon.CheckUser(szWinDomain, szWinUser, szWinPass);
MessageBox(szRet, INFORMATION);

the installer fails without no message !!! i call this dll in a dialog when a user click next !if a click next i go to the end of the installation !!!!!!

Someone can tell me how i can call a method made in net in installscript !?

Thanks for all
Christophe

[RobertDickau]

If you haven't yet, perhaps see if CoCreateObjectDotNet or DotNetCoCreateObject will help; UseDLL is for C-callable DLL functions...

[ChristopheOce]

Yo Robert,

That"'s works really fine and i've use the function :
DotNetCoCreateObject

set objectUserLogon = DotNetCoCreateObject( szPathCompletDll, "CheckUserLogon.CheckUserLogon", "");

try
szRet = objectUserLogon.CheckUser( szWinDomain, szWinUser, szWinPass );
//MessageBox(szRet, INFORMATION);
	
if (szRet = "OK") then
....

Ouf ..i'm happy one problem less 🙂

thanks for your reply and have a nice week end
Christophe

[ChristopheOce]

It's enough me !
I'm not on week end ..:-) !

that's work as i said but if i try to install my package on a share network with the path for example \\mycomputer\myshare ... the package can't load the dll !

i can solve the problem by copy the complete package in the computer and run again ! but how i can use the function DotNetCoCreateObject with a network path or there is a other solution !

thanks for all
Christophe

[ChristopheOce]

We have found why we can load the dll with a network drive !

the problem comes if you try to execute some net code in a network path \\...

the problem is the security permission of the net framework doesn't ALLOW this operation !

Have a nice day
Christophe