Forms and Console

问题

I'm Running a forms application and a console application in one application.

How can i run the forms application and keep the console closed until i click a button on the form?

回答1:

You need to call a couple of win32app calls most specifically allocconsole. here is an msdn post with some sample code.

回答2:

You'll need to do a little P/Invoke:

Add the appropriate methods:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using StackOverflow.Extensions;
using System.Runtime.InteropServices;
using System.IO;
using Microsoft.Win32.SafeHandles;

namespace StackOverflow
{
    public partial class FormMain : Form
    {
        [DllImport("kernel32.dll",
            EntryPoint = "GetStdHandle",
            SetLastError = true,
            CharSet = CharSet.Auto,
            CallingConvention = CallingConvention.StdCall)]
        private static extern IntPtr GetStdHandle(int nStdHandle);

        [DllImport("kernel32.dll",
            EntryPoint = "AllocConsole",
            SetLastError = true,
            CharSet = CharSet.Auto,
            CallingConvention = CallingConvention.StdCall)]
        private static extern int AllocConsole();

        // Some constants
        private const int STD_OUTPUT_HANDLE = -11;
        private const int MY_CODE_PAGE = 437;

        public FormMain()
        {
            InitializeComponent();
        }

        public void PrepareConsole()
        {
            AllocConsole();
            IntPtr stdHandle = GetStdHandle(STD_OUTPUT_HANDLE);
            SafeFileHandle safeFileHandle = new SafeFileHandle(stdHandle, true);
            FileStream fileStream = new FileStream(safeFileHandle, FileAccess.Write);
            Encoding encoding = System.Text.Encoding.GetEncoding(MY_CODE_PAGE);
            StreamWriter standardOutput = new StreamWriter(fileStream, encoding);
            standardOutput.AutoFlush = true;
            Console.SetOut(standardOutput);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // Console was not visible before this button click
            Console.WriteLine("This text is written to the console that just popped up.");

            MessageBox.Show("But we're still in a Windows Form application.");
        }
    }
}

来源：https://stackoverflow.com/questions/9426007/forms-and-console