Fody/Fody

Extensible tool for weaving .net assemblies

Erol

@FrEaKmAn

hi all, when I share the final built files, why do I also need to include .deps.json file?

tom-englert

@tom-englert

@FrEaKmAn .deps.json is not related to Fody, it is part of the regular dotnet build output.

gitoslavexxx

@gitoslavexxx

Hi, i have a problem with the hooking right assembly. I need to modify System.Numerics. I've wrote the weaver to hook it and patch, when im testing this weaver on already compiled .dll file all works as expected but when i add the nuget with my weaver to the project, instead of hooking real System.Numerics.dll it hooks ref version of this lib with only class structure and without any implementations, so how to get a real lib with the actual code during the compilation process?

.net 5 or 6

also i've added System.Numerics to the GetAssembliesForScanning method

gitoslavexxx

@gitoslavexxx

example of this ref classes, so i got this https://github.com/dotnet/runtime/blob/main/src/libraries/System.Runtime.Numerics/ref/System.Runtime.Numerics.cs without any real code

tom-englert

@tom-englert

@gitoslavexxx You can't use Fody to modify any other assembly than the one you are building. You could intercept or replace calls to System.Numerics

Simon Cropp

@SimonCropp

just a heads up dotnet/roslyn#56678

"hot reload does not support IL weavers"

Brandon Butler

@Hackmodford

Has anyone else had any issues using NotifyPropertyChanged's DependsOn attribute? It just isn't working for me in a recent project. https://stackoverflow.com/questions/69519382/propertychanged-fody-dependson-not-working

tom-englert

@tom-englert

@Hackmodford can you provide a complete sample? It is hard to guess the connecting parts from that snippets.

Brandon Butler

@Hackmodford

I will create a simple repo to demonstrate

Brandon Butler

@Hackmodford

Of course I created a simple console application to demonstrate and it works...

Brandon Butler

@Hackmodford

I even went one step up and created a minimal xamarin.forms application with mvvmcross and it still works :/

Brandon Butler

@Hackmodford

Okay. I think I've narrowed it down to this extension method causing the problem.

public static IDisposable ToPropertyChanged<TSender, TParent, TRet, TRet2>(
            this IObservable<IObservedChange<TSender, TRet>> changeObservable,
            TParent owner,
            Expression<Func<TParent, TRet2>> parentProperty) where TParent : MvxNotifyPropertyChanged
        {
            return changeObservable.Subscribe(value =>
            {
                var expression = (MemberExpression)parentProperty.Body;
                var name = expression.Member.Name;
                owner.RaisePropertyChanged(name);
            });
        }

Brandon Butler

@Hackmodford

Here is a simplified project demonstrating the problem.

https://github.com/Hackmodford/DependsOn_broken_example

tom-englert

@tom-englert

@Hackmodford you are trying to mix two incompatible tools. Maybe try ReactiveUI.Fody instead of PropertyChanged.Fody?

Brandon Butler

@Hackmodford

I don't think that would be the issue. I'm still using MvvmCross for the viewmodels. I am not using ReactiveObject at all, just some nifty helper methods from ReactiveUI.

Brandon Butler

@Hackmodford

@tom-englert I created a branch that does not have ReactiveUI. It has the same problem.

tom-englert

@tom-englert

Don't know what library ToPropertyChanged belongs to, but it's not with PropertyChanged Fody

... not compatible ...

Brandon Butler

@Hackmodford

@tom-englert It's a extension method that I created. But my latest example has that completely removed on the other branch.

The issue is that calling MvvmCross's RaisePropertyChanged does not seem to trigger fody.

tom-englert

@tom-englert

@Hackmodford no, that's by design; setting a property triggers fody, and fody calls RaisePropertyChanged - there is no back loop.

tom-englert

@tom-englert

You would need something like this to achieve what you want: https://github.com/tom-englert/TomsToolbox/blob/16e8b65a41b5a5d8832029bc4cb9f49586065c98/src/TomsToolbox.Wpf/ObservableObject.cs#L208-L220

Brandon Butler

@Hackmodford

@tom-englert So the "DependsOn" does not use INotifyPropertyChanged at all?

tom-englert

@tom-englert

https://github.com/Fody/PropertyChanged

AtlantisDe

@AtlantisDe

Catel.Fody Hello, can the unmanaged C# dll be packaged as a single exe?
I don't seem to see any useful information. Can I do this?

tom-englert

@tom-englert

@AtlantisDe "unmanaged C# DLL" ?

AtlantisDe

@AtlantisDe

@tom-englert Yes .... C# importing C++ dll Example:

  [DLLImport( "Libraries\lib.dll" )];
static extern void MyNativeMethod();

the dll...lib.dll is my c++dll...
Now i need packaged as a single exe Pack this c++dll into it

tom-englert

@tom-englert

https://github.com/Fody/Costura

AtlantisDe

@AtlantisDe

@tom-englert thank you very much.... i can do it ....ths

Ronnie Overby

@ronnieoverby

I'm trying to use Tracer.Fody to rewrite a netstandard2.0 class library assembly, but at build time the error I get is :

```
Fody: An unhandled exception occurred:
Exception:
Could not load file or assembly 'Mono.Cecil, Version=0.11.0.0, Culture=neutral, PublicKeyToken=1ca091877d12ca03'. The system cannot find the file specified.
Type:
System.IO.FileNotFoundException
StackTrace:
at InnerWeaver.Execute()
at Processor.ExecuteInOwnAssemblyLoadContext() in C:\projects\fody\Fody\Processor.cs:line 148
at Processor.Inner() in C:\projects\fody\Fody\Processor.cs:line 122
at Processor.Execute() in C:\projects\fody\Fody\Processor.cs:line 50
Source:
FodyIsolated
TargetSite:
Void Execute()

The tracer weaver is pinned to fody 4.2.1. Is that my problem?

AtlantisDe

@AtlantisDe

Hello everyone, how do I configure the obfuscated dll before packaging with fody?

Simon Cropp

@SimonCropp

@AtlantisDe obfuscated assemblies are not supported

Lelelo1

@Lelelo1

Hello. I have question about the location of the xml file. I have a Xamarin setup, with a Net standard library, Xamarin forms, Android and iOS projects. Should FodyWeavers.xml be added to all projects?

tom-englert

@tom-englert

@Lelelo1 https://github.com/Fody/Home/blob/master/pages/configuration.md

chrwell

@chrwell

Hello, since using Fody (6.6.0) with ConfigureAwait.Fody (3.3.1) I'm having those build failures on and off: "Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. Repeat 2 times: at Mono.Cecil.Pdb.ISymUnmanagedWriter2.Close()" on Win10 (64bit, 32GB, i7-9700), both calling MSBuild (from .NET SDK 5.0.4) directly and through JetBrains Rider. ConfigureAwait.Fody is configured through an MSBuild property in the project file. Any ideas of the cause and/or where to submit an issue?

The Stonefox

@thestonefox

Hi, I'm trying to upgrade Fody from version 3.3.5 to the latest 6.6.0 but i'm hitting an error where it says WeaverEntry doesn't contain a reference for AssemblyName and I can see in the git commit history that WeaverEntry was completely changed after 3.3.5 and there is no replacement for the AssemblyName (or its not apparent from the new code or any commit messages)

does anyone know how I can set the assembly name still on the weaver entry?

AtlantisDe

@AtlantisDe

Can anyone please help me how to use Costura.Fody to package LevelDB.Standard ? Got this error System.TypeInitializationException: ""LevelDB.LevelDBInterop" This is the Demo code I made for reference. matjazbravc/Embedded-SQLite-Demo#1

tom-englert

@tom-englert

@AtlantisDe maybe that helps: https://github.com/tom-englert/test-kafka-costura/tree/embed-native-dlls (Fody/Costura#726)

AtlantisDe

@AtlantisDe

@tom-englert Thanks But I tested it and it still failed. Would you mind giving me a demo? Can successfully package LevelDB.Standard .................ths

AtlantisDe

@AtlantisDe

@tom-englert My temporary plan is this
If there is no other solution, I will close this issue in the next 5 days

var dllHandle = LoadLibrary("leveldb.dll");

Geert van Horrik

@GeertvanHorrik

Have you considered hiring someone to debug this for you?

AtlantisDe

@AtlantisDe

@GeertvanHorrik I have solved it myself. I re-downloaded the source code and modified it to get the expected effect. But I wonder if I can support using the official distribution package directly.

Kirk Woll

@kswoll

I have a Fody plugin I was hoping could be added to https://github.com/Fody/Home/blob/master/pages/addins.md Is there a process for that?

Lucas Trzesniewski

@ltrzesniewski

@kswoll You can send a PR which adds your plugin to the addins.md file (please just keep the alphabetical order)

Kirk Woll

@kswoll

thanks!

David Lo

@dav1d992

Hi there,
I'm trying to use Fody.EmptyConstructor on my Domain project without introducing the dependency to Fody in there.
My Business project has a reference to the Domain project. Ideally the dependency to Fody should be in my Business project. Is this possible and how?
Thanks for any suggestions.

On stackoverflow:
https://stackoverflow.com/questions/72088286/use-fody-emptyconstructor-on-a-separate-project

Lucas Trzesniewski

@ltrzesniewski

@dav1d992 Hi, I posted an answer on SO.

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