kill process help me

i try to put a myapplication

winscp.StandardInput.WriteLine("cd /root");
winscp.StandardInput.WriteLine("put ChangeAddressIP");

but if application running i want to kill it and after put

it is possibile in winscp to do
kill pid(ChangeAddressIP) ?

Try
winscp.StandardInput.Close();
Or read
https://winscp.net/eng/docs/guide_dotnet