process p1 = new Process();
p1.StartInfo.FileName = "C:\texlive\2012\bin\win32\pdflatex.exe";
p1.StartInfo.Arguments = FileName;
p1.consuleProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
p1.consuleProcess.StartInfo.CreateNoWindow = true;
p1.consuleProcess.StartInfo.RedirectStandardOutput = true;
p1.consuleProcess.StartInfo.UseShellExecute = false;
p1.consuleProcess.StartInfo.RedirectStandardInput = true;
p1.Start();
p1.consuleProcess.BeginOutputReadLine();
p1.consuleProcess.OutputDataReceived += new DataReceivedEventHandler(p1_OutputDataReceived);

p1.WaitForInputIdle(NumberofMilisecondstoWait)

public void test()
        {
            p1.OutputDataReceived += new DataReceivedEventHandler(p1_OutputDataReceived);
        }

        void p1_OutputDataReceived(object sender, DataReceivedEventArgs e)
        {
            throw new NotImplementedException();
        }