process - C# freeze while starting batch stream -

hey people! working little tool called mineme, , used handle minecraft servers.

so made file stream, should stream output of start_base.cmd (the file starts server). goes wrong, window form freezes, until kill process (java.exe - ran start_base.cmd)

here code:

processstartinfo processinfo = new system.diagnostics.processstartinfo("cmd");          processinfo.windowstyle = processwindowstyle.normal;          processinfo.redirectstandardoutput = true;         processinfo.redirectstandardinput = true;         processinfo.redirectstandarderror = true;         processinfo.createnowindow = true;         processinfo.useshellexecute = false;          process p = new process();         p.startinfo = processinfo;         p.start();          textwriter tw = p.standardinput;           tw.flush();         tw.writeline("start_base.cmd");         tw.close();          textreader tr = p.standardoutput;         string output = tr.readline();          while (output != null)         {             this.lg_log.items.add(output); // add output string list box             output = tr.readline();         } 

what's wrong here? :) please me ..

on ui thread start thread process while loop:

thread t = new thread(new threadstart(dowork)); t.start();   public void dowork() {     // work done on thread }