streamreader - Starting project in same solution with buttonClickEvent/Closing current c# -

what want achieve this: have solution 3 projects inside. i've added these projects explorer folder, solution explorer , made reference projecta projectb & projectc.

now want this, when click button on form of projecta (the first project user sees when opens exe) this:

     private void projectbbutton_click(object sender, eventargs e)     {         this.hide();         projectb.form1 li = new  projectb.form1 ();                  li.show();     } 

that projectb form opens up.

this works problem other project hidden. possible add here projecta closed , projectb starts indepently. paths etc declared in projectb forms this:

    inputstream = file.opentext("gevaar17.txt"); 

are still valid. (because filenotfoundexeption since it's looking in debug folder of projecta). , when search textfile in projectb form1 example doesn't go looking in projecta/bin/debug folder textfile. goes looking in debug folder of projectb?

thanks in advance.

private void projectbbutton_click(object sender, eventargs e)     {         process.start("project2.exe");         application.exit();     } 

this start other project in independent environment , paths work. also, process.start() returns process can use if want, tip. add usings:

using system.diagnostics;