Hello. It seems that the following code works. And it seems that Process
object can automatically run script by using python.exe, but only if
standard output is not redirected...
/*
* Created by SharpDevelop.
* User: Zlatko
* Date: 28.5.2006
* Time: 9:38
*
* To change this template use Tools | Options | Coding | Edit Standard
Headers.
*/
using System;
using System.IO;
using System.Collections.Generic;
using System.Diagnostics;
using System.ComponentModel;
using System.Windows.Forms;
namespace CS_script
{
class MainClass
{
public static void Main(string[] args)
{
MyProcess myProcess = new MyProcess();
myProcess.ExecuteScript();
MessageBox.Show("Continue?","Application",
MessageBoxButtons.OKCancel);
}
}
public class MyProcess
{
// These are the Win32 error code for file not found or access
denied.
const int ERROR_FILE_NOT_FOUND =2;
const int ERROR_ACCESS_DENIED = 5;
/// <summary>
/// Executes a python script.
/// </summary>
public void ExecuteScript()
{
Process myProcess = new Process();
try
{
// Get the path that stores the python script.
//string myDocumentsPath
=Environment.GetFolderPath(Environment.SpecialFolder.Personal);
//If the script is placed in the same folder as C#
executable, set the path to current directory:
string myDocumentsPath=Environment.CurrentDirectory;
//Set the fully qualified script name
myProcess.StartInfo.FileName = myDocumentsPath +
"\\my_script.py";
//Execute the script:
myProcess.Start();
//string output = myProcess.StandardOutput.ReadToEnd();
//Console.WriteLine(output);
//Console.WriteLine(myProcess.StandardOutput.ReadToEnd());
//TextReader t = myProcess.StandardOutput;
//MessageBox.Show(t.ReadToEnd());
// Wait for it to die...
myProcess.WaitForExit();
MessageBox.Show ("Python script is successfully executed!");
}
catch (Win32Exception e)
{
if(e.NativeErrorCode == ERROR_FILE_NOT_FOUND)
{
Console.WriteLine(e.Message + ". Check the path.");
}
else if (e.NativeErrorCode == ERROR_ACCESS_DENIED)
{
// Note that if your word processor might generate
exceptions
// such as this, which are handled first.
Console.WriteLine(e.Message +
". You do not have permission to print this file.");
}
}
}
}
}
Greetings,
Zlatko
"Gerard Flanagan" <[EMAIL PROTECTED]> je napisao u poruci interesnoj
grupi:[EMAIL PROTECTED]
>> "Gerard Flanagan" <[EMAIL PROTECTED]> je napisao u poruci interesnoj
>> grupi:[EMAIL PROTECTED]
>> > tatamata wrote:
>> >> Hello.
>> >>
>> >> How can I run some Python script within C# program?
>> >>
>> >
>> > ---------------------------------------------------------------------------------
>> > ProcessStartInfo startInfo;
>> > Process process;
>> > string directory;
>> > string pyArgs;
>> > string script;
>> >
>> > startInfo = new ProcessStartInfo("python");
>> > startInfo.WorkingDirectory = directory;
>> > startInfo.Arguments = script + " " + pyArgs;
>> > startInfo.UseShellExecute = false;
>> > startInfo.CreateNoWindow = true;
>> > startInfo.RedirectStandardOutput = true;
>> > startInfo.RedirectStandardError = true;
>> >
>> > process = new Process();
>> > process.StartInfo = startInfo;
>> > process.Start();
>> >
>> > string s;
>> > while ((s = process.StandardOutput.ReadLine()) != null)
>> > {
>> > //do something with s
>> > }
>> > ---------------------------------------------------------------------------------
>> >
>
> tatamata wrote:
>> Hello. I tried to implement ypour suggestion, but an error apears:
>> "Exception System.ComponentModel.Win32Exception was thrown in debugee:
>> The specified executable is not a valid Win32 application.
>>
>> namespace CS_script
>> {
>> class MainClass
>> {
>> public static void Main(string[] args)
>> {
>>
>> System.Diagnostics.ProcessStartInfo psi =new
>> System.Diagnostics.ProcessStartInfo();
>> psi.FileName="my_script.py";
>> psi.WorkingDirectory=Environment.CurrentDirectory;
>> psi.RedirectStandardOutput = true;
>> psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
>> psi.UseShellExecute = false;
>> psi.CreateNoWindow = true;
>>
>> System.Diagnostics.Process script;
>> script = System.Diagnostics.Process.Start(psi);
>>
>> System.IO.StreamReader myOutput = script.StandardOutput;
>> script.WaitForExit(2000);
>> if (script.HasExited)
>> {
>> string output = myOutput.ReadToEnd();
>> //this.processResults.Text = output;
>> }
>> MessageBox.Show("finished!");
>> }
>> }
>> }
>>
>> When running the program, I have the following error:
>>
>> "Exception System.ComponentModel.Win32Exception was thrown in debugee:
>> The specified executable is not a valid Win32 application.
>>
>> StartWithCreateProcess()
>> Start()
>> Start()
>> Main() - c:\Documents and Settings\Zlatko\My Documents\SharpDevelop
>> Projects\CS_script\CS_script\Main.cs:32,5 "
>>
>
>
> I have no means of running C# programs at present and can't claim much
> expertise in any case. A guess is that a "valid Win32 application"
> means an '.exe' file, not a '.py' file.
>
> You are assuming that a Process object is as smart as the command
> interpreter ('cmd.exe') and will know to use 'python.exe' for a file
> with a 'py' extension?
>
> What happens if you use 'python.exe' (or 'cmd.exe') as your file and
> the script name as argument as in the code I posted?
>
> Gerard
>
>
> (PS. This group prefers that one doesn't top-post)
>
--
http://mail.python.org/mailman/listinfo/python-list
