> >> "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)
> >
tatamata wrote:
> 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...
>
> 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();
>
> // 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
>
Ok. Glad you have a successful outcome. See the following for an
asynchronous approach with multiple threads:
http://www.codeproject.com/csharp/launchprocess.asp
> >
> > (PS. This group prefers that one doesn't top-post)
> >
Gerard
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