Question

I’m trying to build a .net application that will run some console commands (like running phantomJs) and return me the outcome of the operations. But by default I’m getting everything from the starting of cmd.exe to closing it. Any ideas for a quick fix or do I need to play with regexes ?

Here’s my code as for now :

System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo("cmd.exe");
psi.UseShellExecute = false;
psi.RedirectStandardOutput = true;
psi.RedirectStandardInput = true;
psi.RedirectStandardError = true;

System.Diagnostics.Process proc = System.Diagnostics.Process.Start(psi);
System.IO.StreamReader sOut = proc.StandardOutput;

System.IO.StreamWriter sIn = proc.StandardInput;

sIn.WriteLine("phantomjs -v");
sIn.WriteLine("EXIT");

proc.Close();

string results = sOut.ReadToEnd().Trim();

sIn.Close();
sOut.Close();

Answer 1

Instead of using the different streams. Why not use cmd as filename and pass it the -c "phantomjs -v" as argument. Then use proc.StandardOutput.ReadToEnd() to grab everything that is outputted in the console. This should leave out unneeded info as it only reads what the output of the executed command is.

Following code might not work, but should give you the general idea.

ProcessStartInfo psi = new ProcessStartInfo();
psi.FileName = "cmd";
psi.Arguments = "/c \"phantomjs -v\"";
psi.UseShellExecute = false;
psi.RedirectStandardOutput = true;
// Optional other options

Process proc = Process.Start(psi);

string output = proc.StandardOutput.ReadToEnd();

proc.WaitForExit();