System.InvalidCastException: 'Unable to cast object of type 'System.Reflection.RuntimeMethodInfo' to type 'Mono.Cecil.IMethodSignature'.'

[HPXCoder]

iam making a program that edit IL of methods body in a dll
and i got this error when saving the dll
how can i know the specific method that have this error and how to solve it

[jbevain]

At this point your best bet is either to:

1. Audit your code doing the IL injection. Basically it looks like you're using the result of a GetMethod on a System.Type directly instead of calling ImportReference on the MethodInfo to get an object usable in Cecil's type model.
2. Compile Cecil alongside with your application, so when the exception is thrown you'll be able to see from the callstack what Cecil is doing at this point in time.

[HPXCoder]

oh really i appreciate your help i do what did you say and i got anthor error
could you help please?

[HPXCoder]

how can i import any type to my module :D
i tried
mymodule.ImportReference(resolved.DeclaringType);

resolved.DeclaringType is the member reference of System.string Concat

and tried

mymodule.Import(resolved.DeclaringType);

no thing work

[jbevain]

This next error you're seeing in different.

It means you're using a MethodReference that was created in one module inside another.

You need to make sure all the references you use is one module has been properly created through ImportReference into the module you're modifying.

[HPXCoder]

Thank You :D