C#•8mo ago

✅ WinForms App

Trying to open console with a button click but i get a error (i tried following a tutorial) My code:

c#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace WinFormsApp2
{
    public partial class Form1 : Form

    {
        [DllImport("kerne132.dll", SetLastError = true)]
        [return: MarshalAs(unmanagedType: boo1)]
        static extern bool allocConsole();
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            allocConsole();
            string message1 = "Hello, Starting..";

            Console.WriteLine(message1 );
        }
    }
}

c#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace WinFormsApp2
{
    public partial class Form1 : Form

    {
        [DllImport("kerne132.dll", SetLastError = true)]
        [return: MarshalAs(unmanagedType: boo1)]
        static extern bool allocConsole();
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            allocConsole();
            string message1 = "Hello, Starting..";

            Console.WriteLine(message1 );
        }
    }
}

Error:

c#

CS0103    The name 'Boo1' does not exist in the current context`

c#

CS0103    The name 'Boo1' does not exist in the current context`

18 Replies

GamerpostOP•8mo ago

im new to this

Jimmacle•8mo ago

the error should tell you which line is the problem

GamerpostOP•8mo ago

GamerpostOP•8mo ago

i cant find out whats the problem

Jimmacle•8mo ago

you made a typo, that's not what you should be passing to MarshalAs

GamerpostOP•8mo ago

its what the video said

Jimmacle•8mo ago

well if the video works and your code doesn't then you made a mistake

GamerpostOP•8mo ago

yeah

Jimmacle•8mo ago

compare what you have to the video and see what's different

GamerpostOP•8mo ago

nothing really ive checked 2 times

Jimmacle•8mo ago

can you share a screenshot of the part of the video you're copying?

GamerpostOP•8mo ago

Jimmacle•8mo ago

i see several differences already compare unmanagedType: boo1 vs UnmanagedType.Bool

GamerpostOP•8mo ago

huh

Jimmacle•8mo ago

do you see how those two pieces of text are different?

GamerpostOP•8mo ago

they arent

Jimmacle•8mo ago

hate to tell you but they are programming is very precise, things like casing and the difference between : and . or 1 and l matter

GamerpostOP•8mo ago

oh yeahi thanks jimmacle fixed it

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