I am new to C#, I have to start a very time consuming process from my C# program of course without bearing the loss of ui freeze, also I want to read the output printed by the program in cmd and at last I want a stop button so that I can close the program whenever I want...
Please help..
try:
using System.Diagnostics;
void startProcess()
{
Process p = new Process();
p.StartInfo.FileName = "FileName";
p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.UseShellExecute = false;
p.Start();
var output = p.StandardOutput.ReadToEnd();
}
MethodInvoker starter = new MethodInvoker(startProcess);
starter.BeginInvoke(null, null);
for ending the process:
p.close()
Use something like this:
void StartProcess(){
Process p = new Process();
p.StartInfo.FileName = "yourfile.exe";
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.Start();
var readingThread = new System.Threading.Thread(() => {
while (!p.StandardOutput.EndOfStream){
Console.WriteLine(p.StandartOutput.ReadLine());
System.Threading.Thread.Sleep(1);
}
}
readingThread.Start();
}
Related
I have a console program written in c++, and I would like to continually check its output to use in my c# project.
This is the code I've tried to steal from another StackOverflow question, but with no luck.
Edit:( By no luck, I mean: the output is pretty much empty, although if I set p.StartInfo.CreateNoWindow to false, I can see my script.exe launch and output into its window. )
Process p = new Process();
p.StartInfo.FileName = #"external\script.exe";
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.CreateNoWindow = true;
p.Start();
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();
Console.WriteLine("Output:");
Console.WriteLine(output);
I had a similar issue and it had to do with where the output was going. The solution was to run cmd and execute my script from the cmd process. See this answer to another question for more information. reading from stdout and stderr together Your new code would look like:
Process p = new Process();
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.Arguments = "/c yourscriptpath.exe 2>&1";
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.CreateNoWindow = true;
p.Start();
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();
Console.WriteLine("Output:");
Console.WriteLine(output);
I have an exe file that I call it from my c# code by using Process namespace in c#.
I catch output by using ReadToEnd() method. (in exe source code i used a print method for my desired output).
the problem is when my output is getting larger the executing of exe file is got crashed and hanged.
Is there any limitation of output size when calling exe function?
Process p = new Process();
p.StartInfo.FileName = command;
p.StartInfo.UseShellExecute = false;
p.StartInfo.CreateNoWindow = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.Arguments = args;
p.Start();
p.WaitForExit();
string output = p.StandardOutput.ReadToEnd();
return output;
What you're experiencing is a deadlock. That situation is described in the documentation. In order to avoid it, make sure you read the output before waiting for the child process to exit.
p.Start();
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();
I remember having the same problem as you're describing here, and what I did back then was something like this:
private string RunProcess(string command, string args)
{
StringBuilder sb = new StringBuilder();
Process p = new Process();
p.StartInfo.FileName = command;
p.StartInfo.UseShellExecute = false;
p.StartInfo.CreateNoWindow = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.Arguments = args;
p.OutputDataReceived += (sender, eventArgs) => { sb.Append(eventArgs.Data); };
p.Start();
p.WaitForExit();
return sb.ToString();
}
I'm trying to run cmd from local folder and wanted to pass multiple commands at the same time Eg: once i'm able to run this command, p.StandardInput.WriteLine("multichain-util create chain34");after executing this i want to pass this command p.StandardInput.WriteLine("multichai-cli chain 34 -daemon")
class Program
{
static void Main(string[] args)
{
Process p = new Process();
p.StartInfo.WorkingDirectory = #"D:\multichain-windows-2.0.2";
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.CreateNoWindow = true;
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.UseShellExecute = false;
p.Start();
p.StandardInput.WriteLine("multichain-util create chain34");
p.StandardInput.Flush();
p.StandardInput.Close();
p.WaitForExit();
Console.WriteLine(p.StandardOutput.ReadToEnd());
Console.ReadKey();
}
}
Move all process related stuff into a method. Take in a list of commands as a parameter for that command. And then instead of one p.StandardInput.WriteLine(), iterate through the list of commands and write them all.
static void Main()
{
var commands = new List<string>() { "dir", "mkdir ABC", "dir" };
ExecuteCmd(commands);
Console.ReadLine();
}
static void ExecuteCmd(List<string> commands)
{
Process p = new Process();
p.StartInfo.WorkingDirectory = Directory.GetCurrentDirectory();
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.CreateNoWindow = true;
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.UseShellExecute = false;
p.Start();
foreach (var comm in commands)
p.StandardInput.WriteLine(comm);
p.StandardInput.Flush();
p.StandardInput.Close();
p.WaitForExit();
Console.WriteLine(p.StandardOutput.ReadToEnd());
}
I Have a C# program; when I hit a button I want it to open a CMD window, then automatically type in the cmd window and run that said command. So far I have this from 4 hours of research. But nothing is working.
Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "cmd.exe";
//p.StartInfo.CreateNoWindow = true;
p.Start();
p.StandardInput.WriteLine("ipconfig");
Any idea on how to fill in a certain text then automatically run it when the button is hit?
With StandardInput and StandardOutput redirected, you cannot see the new window opened. If you want to create a new cmd window and run ipconfig in it, you could do this:
var p = new Process();
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.Arguments = "/c ipconfig & pause";
p.Start();
I agree that if all you want to do is execute "ipconfig" you could just invoke it instead of cmd.exe. Assuming you want to do other things with cmd.exe, here is an example of how to invoke it, have it execute a command, and then terminate (using the /K switch instead of /C will keep cmd.exe running):
using System;
using System.Diagnostics;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.Arguments = "/C ipconfig";
p.Start();
var output = p.StandardOutput.ReadToEnd();
Console.Write(output);
Console.ReadKey();
}
}
}
I have a doubt, when I create a new process iexplore, and this process opens one single page, I would like know if the page loads correctly. How can I learn if the page load fails ?. Is there any way to catch an error from iexplore process?
I have this demo code, but doesn't work correctly
string navegador = "C:\\program files (x86)\\Internet Explorer\\iexplore.exe";
Process p = new Process();
p.StartInfo.FileName = navegador;
ProcessStartInfo processStartInfo = new ProcessStartInfo(navegador);
p.EnableRaisingEvents = false;
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.CreateNoWindow = true;
p.StartInfo = processStartInfo;
p.StartInfo.Arguments = "google.com";
p.Start();
Process currentProcess = Process.GetCurrentProcess();
Process[] localByName = Process.GetProcessesByName("iexplore");
Process[] localAll = Process.GetProcesses();
p.OutputDataReceived += new DataReceivedEventHandler(
prsProjectTypes_OutputDataReceived);
p.BeginOutputReadLine();
errorMessage = p.StandardError.ReadToEnd();
p.WaitForExit();
Thank you for any help.
Assuming you are working WPF, you should look at the Web Browser control rather than launching a separate process. This will give you access to the LoadCompleted event which seems to be what you're looking for.