Hello, I'm using a process to compile java source code from within my program. I am then attempting to read the output ( errors , if it compiled ok etc) . But for some reason it isn't working. It works fine when using other shell commands ( ping etc ) but no output is displayed with javac.

Process process = new Process();

                process.StartInfo.UseShellExecute = false;
                process.StartInfo.RedirectStandardOutput = true;
                process.StartInfo.RedirectStandardError = true;
                process.StartInfo.CreateNoWindow = true;
                process.StartInfo.UseShellExecute = false;
                process.StartInfo.FileName = "javac.exe";
                process.StartInfo.Arguments = "source.java";

                process.Start();

                MessageBox.Show(process.StandardOutput.ReadToEnd()); // for testing

Any suggestions?


: Edit problem solved was using standardoutput instead of error =/

Recommended Answers

All 5 Replies

Hi,

I have a similar problem. I try to run a Program and I want to see its output in a RichTextBox.

void start_process(){
    ProcessStartInfo psi = new ProcessStartInfo();
    psi.FileName = "path/to/*.exe";
    psi.WorkingDirectory = "path/to/working_directory";
    psi.UseShellExecute = false;                    
    psi.RedirectStandardOutput = true;         

    Process myProc = Process.Start(psi);      

    myProc.OutputDataReceived += new DataReceivedEventHandler(myProc_OutputDataReceived);
        // this is a suggestion of MS Visual C# Studio 2005 ^^
}

void myProc_OutputDataReceived(object sender, DataReceivedEventArgs e)
{
    RichTextBox1.AppendText(e.Data+"\n");
}

Thanks!

opatut

Hi,

I have a similar problem. I try to run a Program and I want to see its output in a RichTextBox.

void start_process(){
    ProcessStartInfo psi = new ProcessStartInfo();
    psi.FileName = "path/to/*.exe";
    psi.WorkingDirectory = "path/to/working_directory";
    psi.UseShellExecute = false;                    
    psi.RedirectStandardOutput = true;         

    Process myProc = Process.Start(psi);      

    myProc.OutputDataReceived += new DataReceivedEventHandler(myProc_OutputDataReceived);
        // this is a suggestion of MS Visual C# Studio 2005 ^^
}

void myProc_OutputDataReceived(object sender, DataReceivedEventArgs e)
{
    RichTextBox1.AppendText(e.Data+"\n");
}

Thanks!

opatut

// Start the child process.
Process p = new Process();
// Redirect the output stream of the child process.
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "Write500Lines.exe";
p.Start();
// Do not wait for the child process to exit before
// reading to the end of its redirected stream.
// p.WaitForExit();
// Read the output stream first and then wait.
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();


From MSDN Library.

// Start the child process.
Process p = new Process();
// Redirect the output stream of the child process.
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "Write500Lines.exe";
p.Start();
// Do not wait for the child process to exit before
// reading to the end of its redirected stream.
// p.WaitForExit();
// Read the output stream first and then wait.
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();


From MSDN Library.

// Start the child process.
Process p = new Process();
// Redirect the output stream of the child process.
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "Write500Lines.exe";
p.Start();
// Do not wait for the child process to exit before
// reading to the end of its redirected stream.
// p.WaitForExit();
// Read the output stream first and then wait.
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();


From MSDN Library.

Thanks royael. Problems is solved. Its succesfull...

commented: Don't bump old threads -1

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Thread Closed.

commented: you seem to have a patience of a saint to keep closing dozen of "Grand returns" and remain same unflappable :D +2
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