Hi, i need help with my code.

paying money. Im making a csharp based DLL injector for one of my friends project, and i dont know how to code a thing i want. So, basically, I have the dll selector already done but i need the program to "grab" the dll and inject it into a selected Process named "javaw.exe" i already coded most of the kernel32.dll functions but dont know how to do the rest. I want it to do all that when you click on button3_Click.