I am trying to create a method decorator using Fody but it gives me the following error:
I have taken specific care to not wrap my IMethodDecorator inside any namespace as has been mentioned in a lot of places online. Following is the sample code I am trying in a console app.
IMethodDecorator
using System;
using System.Reflection;
public interface IMethodDecorator
{
void OnEntry(MethodBase method);
void OnExit(MethodBase method);
void OnException(MethodBase method, Exception exception);
}
MethodDecoratorAttribute
using System;
using System.Diagnostics;
using System.Reflection;
using FODYPOC;
// Atribute should be "registered" by adding as module or assembly custom attribute
[module: MethodDecorator]
namespace FODYPOC
{
// Any attribute which provides OnEntry/OnExit/OnException with proper args
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Assembly | AttributeTargets.Module)]
public class MethodDecoratorAttribute : Attribute, IMethodDecorator
{
// instance, method and args can be captured here and stored in attribute instance fields
// for future usage in OnEntry/OnExit/OnException
public MethodDecoratorAttribute() { }
public void OnEntry(MethodBase method)
{
Console.WriteLine();
}
public void OnExit(MethodBase method)
{
Console.WriteLine();
}
public void OnException(MethodBase method, Exception exception)
{
Console.WriteLine();
}
}
public class Sample
{
[MethodDecorator]
public void Method()
{
Debug.WriteLine("Your Code");
}
}
}
Can someone point me in the right direction. It looks pretty simple to implement and I know I am making a very silly mistake somewhere.
Apparently the latest version of MethodDecorator.Fody (Version 0.9.0.6 currently) was not working. Downgrading the version to version 0.8.1.1 fixed the issue for me.
After a little more investigation, it appears that the interface method signatures were different in the two versions. So when I had the new package, it was not expecting MethodBase as a parameter and due to not finding anything that matches the interface it expects, it was throwing the error.