System.Process

[DaveL]

hello
Im using System.Diagnostics.Process to Run
a External Exe

When i Run it its all good except sometimes
the Executed Process running askes for a Yes or No
how can i send Keys to a Shelled Process to make it continue

DaveL

 

[daveL]

Im working on it now...but i have one question about sendkeys i use that in
windows client classes
but this could be used as a back end object from web site...
Im actually calling pgp -e file2encrypt skey

if the key is not signed it will ask whether to use the key or not
I want to send Y and Enter to continue....

System.Windows.forms. ive had errors from the websever when this namespace
is used

Code will be executed on the server not the client


Thanks DaveL

 

[daveL]

Im just using xcopy one folder to another
"xcopy d:\temp\*.* /s d:\junk"
this will produce the overwrite yes/no/All
i Cant Capture the Question Text

DaveL

 

[daveL]

below is some code i got to work....any sugestions welcome to make it
better....
Im just using xcopy d:\temp\*.* /s d:\junk this will produce the
Yes/No/All
to overwrite existing files
I was unable to use proc.standardoutput.readLine() to capture the output
would just hang
so i tried the Read() method and this caught all the start up text of the
running app (xcopy) output
before it actually started to copy files
I dont have PGP.exe here at hope to test with that so i used xcopy to
emulate pgp
Pgp will ask when a key is not signed wether to use the encryptionkey or not
so i will need to Send a Y to Pgp

Thanks for any advice for the below code
DaveP



public void ReadStandardOut()
{
try
{
char c ;
int iChar;
string line="";
//read all characters from running application
//if the string looking for is found break out of loop

while ( (iChar=proc.StandardOutput.Read())>0 &&
proc.HasExited==false)
{
line+=((char)iChar).ToString();
if (line.IndexOf("Yes/No") > 0)
{

break;
}
}
//if above string not found check HasExited...if false Write A
for overwrite all
//then read the files being copied
if (proc.HasExited == true)
{
return;
}

proc.StandardInput.WriteLine("A"); //write the A for
overwrite All to Xcopy
// string line;
while ((!proc.HasExited) && ((line =
proc.StandardOutput.ReadLine()) != null))

Console.WriteLine("Line "+line);
}
catch (InvalidOperationException)
{
Console.WriteLine("here error");
// The process has exited or StandardError hasn't been
redirected.
}
}



}

 

[daveL]

im not gonna use xcopy
I will be using PGP.exe
Im just using xcopy to get the Question....

daveL

 

[DaveL]

below is a test class i put together to run pgp.exe
Cant seem to get pgp to go after a unsignd key
When a key is not signed/trusted pgp will ask Continue (y/N)?
I Do Capture the y/n)?
then Write standardinput.WriteLine("Y") but can't seem to get it to work
the Test Class is Below


using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;

namespace batchPm160
{
class Program
{
static void Main(string[] args)
{
PgpWrapper oPgp = new PgpWrapper()
oPgp.Pgp("d:\tempt\test.txt "+mykey,false) //false is for
ascii armor
}
}



public class PgpWrapper:Object
{
private System.Diagnostics.Process oProcess;
public int Seconds = 20;
public PgpWrapper()
:base()
{
this.oProcess= new Process();
}
public int Pgp(string sFilePath, string sPgpKey,bool bUseAsciiArmor)
{

int iRet = 1;

this.oProcess.StartInfo.FileName = "Pgp.exe";
// this.oProcess.StartInfo.WindowStyle =
System.Diagnostics.ProcessWindowStyle.Hidden;
if (System.IO.File.Exists(sFilePath+".PGP")==true)
{
System.IO.File.Delete(sFilePath+".PGP");
}
if (bUseAsciiArmor==true)
{
this.oProcess.StartInfo.Arguments = "-e -a " + sFilePath+"
"+sPgpKey + " ";
}
else
{

this.oProcess.StartInfo.Arguments = "-e " + sFilePath+"
"+sPgpKey + " ";
}
//ThisProcess.StartInfo.Verb = "OPEN";
this.oProcess.StartInfo.UseShellExecute = false;
this.oProcess.StartInfo.RedirectStandardInput = true;
this.oProcess.StartInfo.RedirectStandardOutput = true;
this.oProcess.StartInfo.CreateNoWindow = true;


this.oProcess.EnableRaisingEvents = true;
Console.WriteLine(this.oProcess.Start());





//oW.Write("Y"+(char)13);

if (this.Wait4TimedExit(this.Seconds) == false)
{
iRet = -1;
}
return iRet;
}
public bool Wait4TimedExit(int TimeInSeconds)
{
bool Success = false;
try
{


int iChar;
string line = "";
//read all characters from running application
//if the string looking for is found break out of loop

while ((iChar = this.oProcess.StandardOutput.Read()) > 0 &&
this.oProcess.HasExited == false)
{
line += ((char)iChar).ToString();
//Console.WriteLine(line);
if (line.IndexOf("y/N)?") > 0)
{
Console.WriteLine("Got it");


break;
}
}
if (this.oProcess.HasExited == true)
{
Console.WriteLine("Exited ");
return true;
}

this.oProcess.StandardInput.WriteLine("Y"+this.oProcess.StandardInput.NewLine);
// Success = (this.oProcess.WaitForExit(TimeInSeconds *
1000));

}
catch (InvalidOperationException e)
{
string cMsg;
//use e object do somthing later or remove this error
handler
cMsg = e.Data.ToString();
Console.WriteLine(cMsg);
Console.ReadKey();
Success = false;
}
this.oProcess.Close();
return Success;
}

}


}