How to Inject code in c# method calls from a separate app
- by Fusspawn
I was curious if anyone knew of a way of monitoring a .Net application's runtime info (what method is being called and such)
and injecting extra code to be run on certain methods from a separate running process.
say i have two applications:
app1.exe that for simplicity's sake could be
class Program
{
static void Main(string[] args)
{
while(true){
Somefunc();
}
}
static void Somefunc()
{
Console.WriteLine("Hello World");
}
}
and I have a second application that I wish to be able to detect when Somefunc() from application 1 is running and inject its own code,
class Program
{
static void Main(string[] args)
{
while(true){
if(App1.SomeFuncIsCalled)
InjectCode();
}
}
static void InjectCode()
{
App1.Console.WriteLine("Hello World Injected");
}
}
So The result would be Application one would show
Hello World
Hello World Injected
I understand its not going to be this simple ( By a long shot )
but I have no idea if it's even possible and if it is where to even start.
Any suggestions ?
I've seen similar done in java, But never in c#.
EDIT:
To clarify, the usage of this would be to add a plugin system to a .Net based game that I do not have access to the source code of.
