calling a simple .net dll

Hi all,

Iam trying to call a .net dll in NSIS script below is the code.

------------------------------------------------------
outFile "NewTest.exe"

section

File "MathLib.dll"
File "CLR.dll"
System::Call $0 'CLR::Cal('MathLib.dll::MathLib::MClass::add(12,8)')'

Messagebox mb_ok $0

SectionEnd
------------------------------------------------------

and the class library code is
------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;

namespace MathLib
{
public class MClass
{
public int add(int a, int b)
{
return (a + b);
}
}
}
------------------------------------------------------

When I try to execute the NSIS script, it runs but nothing is been returned.

What is that Iam missing in the NSIS script.
Any help is appreciated.

That syntax seems outdated. The one on the Wiki page is completely different and CLR is called directly without the System plug-in.

Thanks Kichik.

I tried the below code.
;-------------------------------------------
section

InitPluginsDir
SetOutPath $PLUGINSDIR
File "MathLib.dll"
File "CLR.dll"
CLR::Call /NOUNLOAD "MathLib.dll" "MathLib.MClass" "add" 5 10
pop $0
MessageBox MB_OK $0
CLR:😁estroy

sectionend
;-------------------------------------------


I tried as per your suggestion but compiler gives the below error.

Invalid command : CLR::Call

Thanks for looking in to it.

That's because you haven't properly installed the CLR plug-in. Put the DLL in your plug-ins directory.

Excellent. Thanks Kichik.

Iam can able to call the .net dll by copying the CLR.dll in to the plugins directory and with a little change to the code line where we call.

CLR::Call /NOUNLOAD "MathLib.dll" "MathLib.MClass" "add" 2 5 10

I was missing 2 in my statement which is required to tell the compiler that call to dll has 2 parameters.

Thanks Again.... :-)

Hi Kichick,

Is there a way to call a property as well.

CLR::Call /NOUNLOAD "MathLib.dll" "MathLib.MClass" "Name" 0

Where "Name" is the public property in MClass.

Thanks

Currently you can call properties by using the get_ and set_ notation. If your property is called MyProperty, you can set it's value with set_MyProperty and you can get it's value with get_MyProperty.

Example getting a property value:

CLR::Call /NOUNLOAD SomeAssembly.dll SomeNamespace.SomeClass get_MyProperty 0
pop $0  
MessageBox MB_OK $0 

Example setting a property value:

CLR::Call /NOUNLOAD SomeAssembly.dll SomeNamespace.SomeClass set_MyProperty 1 "Hello Property" 

I have added this information to the wiki as well.

Regards Claes