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C# Command Prompt Reading

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Join Date: Apr 2008

Posts: 27

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C# Command Prompt Reading

May 12th, 2009

I am trying to read a line from the command prompt and output that line to a text box in my C# application. The only catch is i can't seem to get it to read a line at a time and display it in the text box as the command prompt is running its command.

for example

string output = "";
while (output != null)
{
output = console.StandardOutput.ReadLine();
OutputBox.Text += '\n' + output;
}

Does anyone know how to read a command prompt line by line and output it into a text box as it is occurring?

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Join Date: Oct 2008

Posts: 2,612

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Re: C# Command Prompt Reading

May 12th, 2009

Use the following code :

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = "";
            Sample a = new Sample();
            a.Refresh();   // re-paint a form
            do
            {
                s = Console.ReadLine();
                a.MyText = s;
                a.Refresh();  // re-paint a form
            } while (s.Length != 0);
        }
        static void show()
        {
 
        }
    }
}
 
class Sample : System.Windows.Forms.Form
{
    System.Windows.Forms.TextBox t = new System.Windows.Forms.TextBox();
    public Sample()
    {
        t.Multiline = true;
        t.Size = new System.Drawing.Size(100, 100);
        Controls.Add(t);
        Show();
    }
    public string MyText
    {
        get
        {
            return t.Text;
        }
        set
        {
            t.Text = t.Text + "\r" + "\n" + value;
        }
    }
 
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = "";
            Sample a = new Sample();
            a.Refresh();   // re-paint a form
            do
            {
                s = Console.ReadLine();
                a.MyText = s;
                a.Refresh();  // re-paint a form
            } while (s.Length != 0);
        }
        static void show()
        {

        }
    }
}

class Sample : System.Windows.Forms.Form
{
    System.Windows.Forms.TextBox t = new System.Windows.Forms.TextBox();
    public Sample()
    {
        t.Multiline = true;
        t.Size = new System.Drawing.Size(100, 100);
        Controls.Add(t);
        Show();
    }
    public string MyText
    {
        get
        {
            return t.Text;
        }
        set
        {
            t.Text = t.Text + "\r" + "\n" + value;
        }
    }

}

Failure is not fatal, but failure to change might be. - John Wooden

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Join Date: Apr 2008

Posts: 27

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Re: C# Command Prompt Reading

May 13th, 2009

Thank you, works perfect.

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Originally Posted by adatapost

Use the following code :
Help with Code Tags

C# Syntax (Toggle Plain Text)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = "";
            Sample a = new Sample();
            a.Refresh();   // re-paint a form
            do
            {
                s = Console.ReadLine();
                a.MyText = s;
                a.Refresh();  // re-paint a form
            } while (s.Length != 0);
        }
        static void show()
        {
 
        }
    }
}
 
class Sample : System.Windows.Forms.Form
{
    System.Windows.Forms.TextBox t = new System.Windows.Forms.TextBox();
    public Sample()
    {
        t.Multiline = true;
        t.Size = new System.Drawing.Size(100, 100);
        Controls.Add(t);
        Show();
    }
    public string MyText
    {
        get
        {
            return t.Text;
        }
        set
        {
            t.Text = t.Text + "\r" + "\n" + value;
        }
    }
 
}
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication5 { class Program { static void Main(string[] args) { string s = ""; Sample a = new Sample(); a.Refresh(); // re-paint a form do { s = Console.ReadLine(); a.MyText = s; a.Refresh(); // re-paint a form } while (s.Length != 0); } static void show() { } } } class Sample : System.Windows.Forms.Form { System.Windows.Forms.TextBox t = new System.Windows.Forms.TextBox(); public Sample() { t.Multiline = true; t.Size = new System.Drawing.Size(100, 100); Controls.Add(t); Show(); } public string MyText { get { return t.Text; } set { t.Text = t.Text + "\r" + "\n" + value; } } }