Having problems getting DLL plugin working properly

Unity Engine
1

In my problems with getting a fast CSV importer working (as mentioned my other post) I attempted setting things up with the library here: Simple and Fast CSV Library in C# - CodeProject - compiled in to a DLL.

Problem is, once I converted it to the DLL, when I add it to my assets folder i get the error:

Internal compiler error. See the console log for more information. output was:
Unhandled Exception: System.Reflection.ReflectionTypeLoadException: The classes in the module cannot be loaded.
at (wrapper managed-to-native) System.Reflection.Assembly:GetTypes (bool)
at System.Reflection.Assembly.GetTypes () [0x00000] in :0
at Mono.CSharp.RootNamespace.ComputeNamespaces (System.Reflection.Assembly assembly, System.Type extensionType) [0x00000] in :0
at Mono.CSharp.RootNamespace.ComputeNamespace (Mono.CSharp.CompilerContext ctx, System.Type extensionType) [0x00000] in :0
at Mono.CSharp.GlobalRootNamespace.ComputeNamespaces (Mono.CSharp.CompilerContext ctx) [0x00000] in :0
at Mono.CSharp.Driver.LoadReferences () [0x00000] in :0
at Mono.CSharp.Driver.Compile () [0x00000] in :0
at Mono.CSharp.Driver.Main (System.String[ ] args) [0x00000] in :0

This is my first attempt at trying to use a DLL in Unity, not sure how to go about fixing this… Any advice?

2

Usually, that would indicate that the DLL was built in an incompatible .NET target framework.

Check that the DLL is built targeting 3.5 or lower.

3

The class is using features of .Net 4.0 like BlockingCollection. As LightStriker said, it can’t use features that were introduced beyond .NET 3.5.

4

you can try use unmanaged dll method to read

example

[DllImport (path, EntryPoint=“VoiceAvailable”)]
private static extern int VoiceAvailable ();
[DllImport (path, EntryPoint=“InitVoice”)]
private static extern void InitVoice ();