.NET libraries with "smart" functions import does not work

[mbalg]

hi all, 

I try to import a C# written DLL as in the example from the release notes.

https://www.metatrader5.com/en/releasenotes/terminal/1898 -> I checked my version and I have 1940.

#import "MQL5Test.dll"

//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
  int x=41;
   TestClass::Inc(x);
   Print(x);
//---
   
  }

namespace MQL5Test
{
    public class TestClass
    {
        public static void Inc(ref int x)
        {
            x++;
        }
    }
}

Unfortunately I get now the error:
2018.12.02 11:10:47.258 TestCSharp (EURUSD,H1) function 'MQL5Test.TestClass::Inc' not found in 'C:\Users\username\AppData\Roaming\MetaQuotes\Terminal\D0E8209F77C8CF37AD8BF550E51FF075\MQL5\Libraries\MQL5Test.dll'

2018.12.02 11:10:47.258 TestCSharp (EURUSD,H1) EX5 loading failed

Does anybody know why?

[Ivan Negreshniy]

mbalg:

hi all, 

I try to import a C# written DLL as in the example from the release notes.

https://www.metatrader5.com/en/releasenotes/terminal/1898 -> I checked my version and I have 1940.

Unfortunately I get now the error:
2018.12.02 11:10:47.258 TestCSharp (EURUSD,H1) function 'MQL5Test.TestClass::Inc' not found in 'C:\Users\username\AppData\Roaming\MetaQuotes\Terminal\D0E8209F77C8CF37AD8BF550E51FF075\MQL5\Libraries\MQL5Test.dll'

2018.12.02 11:10:47.258 TestCSharp (EURUSD,H1) EX5 loading failed

Does anybody know why?

I compiled your library example in two versions of C Sharp, here are the command lines

C:\Windows\Microsoft.NET\Framework64\v3.5\csc /target:library MQL5Test.cs
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc /target:library MQL5Test.cs

in the MT5 Terminal build 1940 everything works fine

2018.12.02 18:00:28.279 TestCSharp (EURUSD,H1)  42
2018.12.02 18:01:29.523 TestCSharp (EURUSD,H1)  42

[mbalg]

Ivan Negreshniy:
I compiled your library example in two versions of C Sharp, here are the command lines

in the MT5 Terminal build 1940 everything works fine

hi ivan, thanks a lot. i looks very strange i will try it again. many thanks for you help.