I haven't been able to find much info on this with C#, so I thought I'd ask here. I want to know how to create a simple app that hooks into another portable C# app and injects code into it. Basically I want it to hook onto my program and ask for a password on startup through the hook. Thanks :P

If both of these apps exist within the same solution, it's pretty easy to do. You can reference another exe the same as you do a dll and vice-versa.