vb.net - How to change a value in a source of Executable file -

i have form called messageselector contains textbox , button, in add-on has executable source file, called showmessage.exe, it's job show messagebox:

dim msgtext string = "hello world!" msgbox(msgtext)

when run form messageselector , click it's button, executes showmessage.exe, , message "hello world!".

i didn't utilize console application parameters method because need know how modify source of showmessage.exe

now need know:

how can create show me text of textbox instead of "hello world!"?

should dynamic value in sources of showmessage.exe file, or can modify within messageselector code

any help appreciated, give thanks much.

vb.net exe

Jaimee