The type or namespace name 'ILGenerator' could not be found

Question

we use the XLUA plugin in our project, which compile error when upgrading from .Net3.5 to .Net4.x in Unity2018.3.0.f2.

 using System.Collections.Generic;
 using System.Reflection.Emit;
 using System.Reflection;
 using System;
 using System.Linq;
 
 // ...
 
 private void emitPush(ILGenerator il, Type type, short dataPos, bool isParam, LocalBuilder L, LocalBuilder translator, bool isArg)
 {
    // ...
 }

Answer 1

Answer by N-Dream-AG · Jan 23, 2019 at 10:13 AM

We're having a similar issue with our AirConsole Plugin, where people suddenly get errors like "'ILGenerator' could not be found" and "'DynamicMethod' could not be found" if they import the plugin into Unity 2018.3.

For us, the solution is to set API Compatibility Level to .NET 4.x and Scripting Runtime Version to .NET 4x Equivalent.

The API Compatibility Level can be set for every platform, so if your Platform is set to WebGL in the Build Settings (as it should be in our case), you need to set the API Compatibility Level in the WebGL Player Settings.

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The type or namespace name 'ILGenerator' could not be found

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