Creating dll for c# eclr 3.2 profile

David de Roo

Hi,n

is it possible to create a dll from a .net core that can be used in the visual studio c# plcnext evironment.

I receive the following error:

1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(2110,5): warning MSB3268: The primary reference "xxxxxLib" could not be resolved because it has an indirect dependency on the framework assembly "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" which could not be resolved in the currently targeted framework. ".NETFramework,Version=v4.0,Profile=eCLR3.2". To resolve this problem, either remove the reference "xxxxxLib" or retarget your application to a framework version which contains "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089".

Kind regards,

David de Roo

Oliver PLCnext Team

Hello David,

you can create Projects with the PLCnext Visual Studio Plugin.
Then just add some classes ect you want to create. 
Afterwards you can build it into a DLL.
This dll can then be Included as a reference for your FunktionBlock libraries and will automatically packaged into the *pcwlx file.

this looks like your Project Dll has a reference on a conflicting mscorlib.

 

David de Roo

Hi Oliver,

thanks for your answer, But the problem is that for example System.Text and System.Linq is not in the eclr library. So I can not compile my project.

Kind regards,

david

Martin [PLCnext Technology Team]

Hi David,

To compile a C# project for the embedded CLR on a PLCnext Control, the code must only use classes that are supported by the eCLR. This is no different to any other .NET runtime e.g. Mono or .NET core - if your C# code is targeting those runtimes, you can only use classes that they support.

The documentation that is included with each PLCnext C# project in visual studio shows all the classes that are currently supported by the eCLR.

Martin.