How do you enter something at a DOS prompt Programmatically?

Question

I have program, that must interact with a DOS program before my program can continue what it is doing. I\'m trying to avoid my user from having to interact with this dos pro

Answer 1

You can pipe in a 'y' character into the program like so:

echo y | executable.exe

Multiple lines can be entered like so:

(echo y
echo n) | executable.exe

...which will pass first 'y' then 'n'.

See tip from Microsoft here.

Answer 2

The post from Microsoft also clearly says :

Do not type a space between the "y" and the pipe symbol (|)

and indeed, I noticed that in my case

echo y | executable.exe

doesn't work while

echo y| executable.exe

works fine

Answer 3

I used the following, since "echo y | executable.exe" didn't worked for me

// Write a "Y" to the process's input
proc.StandardInput.WriteLine("Y");
// Now that we've sent the confirmation "Y" wait for the process to exit
proc.WaitForExit();

as posted here: https://www.experts-exchange.com/questions/27024185/C-ProcessStart-How-to-automatically-press-the-Y-key.html